Grupo Aeroportuario del Sureste, S. A. B. de C. V. (ASR) 20-F 12 Apr 21 2020 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2020shares
Cover
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	SOUTHEAST AIRPORT GROUP
Entity Central Index Key	0001123452
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	300,000,000
Entity Shell Company	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true

Consolidated Statements of Fina

Consolidated Statements of Financial Position - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents (Note 5)	$ 5,192,628	$ 6,192,679
Restricted cash and cash equivalents (Note 5.1)	5,055	165,622
Accounts receivable - Net (Note 6)	1,358,227	1,003,793
Recoverable taxes (Note 13)	631,999	230,030
Creditable value added tax	272,325	43,160
Inventory	34,023	49,667
Other assets	221,792	160,905
Total current assets	7,716,049	7,845,856
NON-CURRENT ASSETS:
Land, furniture and equipment - Net (Note 7)	504,385	520,623
Intangible assets, airport concessions and goodwill - Net (Notes 1 and 8)	52,182,311	49,126,038
Receivable from third parties		23,364
Investment in joint venture accounted for by the equity method (Note 17.2f)	8,466
Total assets	60,411,211	57,515,881
CURRENT LIABILITIES:
Bank loans (Note 10)	808,515	238,235
Short term debt (Note 11)	330,235	311,372
Income taxes payable	29,933	211,083
Accounts payable and accrued expenses (Note 9)	1,598,404	1,799,330
Total current liabilities	2,767,087	2,560,020
NON-CURRENT LIABILITIES:
Bank loans (Note 10)	6,119,655	6,674,717
Long-term debt (Note 11)	6,641,941	6,488,569
Deferred income tax (Note 13)	3,165,145	3,004,584
Employee benefits	24,177	16,814
Total liabilities	18,718,005	18,744,704
STOCKHOLDERS' EQUITY (Note 12):
Capital stock	7,767,276	7,767,276
Capital reserves	13,445,231	13,171,105
Other comprehensive income	321,867	(218,788)
Retained earnings	12,131,610	10,438,563
Controlling interest	33,665,984	31,158,156
Non-Controlling interest	8,027,222	7,613,021
Total stockholders' equity	41,693,206	38,771,177
Total liabilities and stockholders' equity	$ 60,411,211	$ 57,515,881

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue (Notes 3 and 19.1.):
Aeronautical services	$ 5,412,418	$ 9,596,975	$ 8,942,910
Non-aeronautical services	3,555,227	5,988,470	5,531,557
Construction services (Note 3.1.3)	3,657,086	1,236,193	935,774
Total revenue	12,624,731	16,821,638	15,410,241
Operating costs and expenses (Note 4):
Cost of aeronautical and non-aeronautical services	5,617,415	7,058,686	6,594,871
Cost of construction services	3,657,086	1,236,193	935,774
Administrative expenses	232,935	250,183	235,264
Total operating costs and expenses	9,507,436	8,545,062	7,765,909
Other Income (Note 16.e)	158,881	204,719	134,637
Operating profit	3,276,176	8,481,295	7,778,969
Interest income	262,370	343,612	280,623
Interest expense	(926,312)	(1,084,293)	(1,230,651)
Exchange income on foreign currency	334,150	278,641	462,218
Exchange loss on foreign currency	(89,074)	(357,518)	(374,460)
Other operating income (expense)	(418,866)	(819,558)	(862,270)
Equity in the results of joint venture accounted for by the equity method (Note 17.2 f)	(1,618)
Net income before income taxes	2,855,692	7,661,737	6,916,699
Income taxes (Note 13)
Asset tax		932	932
Income tax	729,155	1,978,102	1,795,961
Net income for the year	2,126,537	5,683,635	5,119,806
Net income for the year attributable to:
Controlling interest	1,972,319	5,465,822	4,987,601
Non-Controlling interest	154,218	217,813	132,205
Net income for the year	2,126,537	5,683,635	5,119,806
Items that will not be reclassified to income for the period:
Remeasurement of labor obligations	(5,146)	(5,272)	4,692
Items that might be reclassified to income for the period:
Effect of the foreign currency translation in subsidiaries	800,638	(588,575)	116,059
Total comprehensive income for the year	2,922,029	5,089,788	5,240,557
Comprehensive income for the year attributable to:
Controlling interest	2,507,828	5,051,971	4,986,573
Non-Controlling interest	414,201	37,817	253,984
Total comprehensive income for the year	$ 2,922,029	$ 5,089,788	$ 5,240,557
Basic and diluted earnings per share expressed in Mexican Pesos (Note 17.19)	$ 7	$ 18	$ 17

Consolidated Statement of Chang

Consolidated Statement of Changes in Stockholders' Equity - MXN ($) $ in Thousands	Capital stock	Legal reserve	Reserve for repurchase of shares	Other comprehensive income	Retained earnings	Non-controlling interest	Total
Balances at January 1 at Dec. 31, 2017	$ 7,767,276	$ 1,075,002	$ 7,052,635	$ 195,511	$ 9,949,654	$ 7,648,223	$ 33,688,301
Comprehensive income:
Net profit for the year					4,987,601	132,205	5,119,806
Effect of foreign currency translation in subsidiaries				(5,720)		121,779	116,059
Remeasurement of labor obligations					4,692		4,692
Total comprehensive income for the year				(5,720)	4,992,293	253,984	5,240,557
Transfers to legal reserve		291,865			(291,865)
Transfers to the reserve for acquisitions of shares (Note 12)			2,809,627		(2,809,627)
Dividends paid					(2,034,000)		(2,034,000)
Difference in the consideration paid for the acquisition of the non-controlling interest of Airplan recognized on parents equity (Note 1.2)					113,534	(327,003)	(213,469)
Balance at December 31 at Dec. 31, 2018	7,767,276	1,366,867	9,862,262	189,791	9,919,989	7,575,204	36,681,389
Comprehensive income:
Net profit for the year					5,465,822	217,813	5,683,635
Effect of foreign currency translation in subsidiaries				(408,579)		(179,996)	(588,575)
Remeasurement of labor obligations					(5,272)		(5,272)
Total comprehensive income for the year				(408,579)	5,460,550	37,817	5,089,788
Transfers to legal reserve		249,666			(249,666)
Transfers to the reserve for acquisitions of shares (Note 12)			1,692,310		(1,692,310)
Dividends paid					(3,000,000)		(3,000,000)
Balance at December 31 at Dec. 31, 2019	7,767,276	1,616,533	11,554,572	(218,788)	10,438,563	7,613,021	38,771,177
Comprehensive income:
Net profit for the year					1,972,319	154,218	2,126,537
Effect of foreign currency translation in subsidiaries				540,655		259,983	800,638
Remeasurement of labor obligations					(5,146)		(5,146)
Total comprehensive income for the year				540,655	1,967,173	414,201	2,922,029
Transfers to legal reserve		274,126			(274,126)
Balance at December 31 at Dec. 31, 2020	$ 7,767,276	$ 1,890,659	$ 11,554,572	$ 321,867	$ 12,131,610	$ 8,027,222	$ 41,693,206

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares	Apr. 26, 2019	Apr. 26, 2018
Consolidated Statement of Changes in Stockholders' Equity
Dividends paid, per share	$ 10	$ 6.78

Consolidated Statements of Cash

Consolidated Statements of Cash Flows $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)
Operating activities
Income before income taxes	$ 2,855,692	$ 7,661,737	$ 6,916,699
Adjustments for:
Equity in the results of joint venture accounted by the equity method	1,618
Depreciation and amortization (Notes 4, 7 and 8)	1,934,766	1,836,897	1,760,741
Interest income	(262,370)	(343,612)	(280,623)
Interest expense	926,312	1,084,293	1,230,651
Exchange loss	781,458	90,905	16,373
Exchange gain	(1,388,687)	(285,094)	(295,524)
Working capital variations:
Accounts receivable (Note 6)	(452,636)	(125,309)	(107,608)
Recoverable taxes and other current assets	(128,348)	222,175	48,182
Trade accounts payable and other liabilities (Note 9)	209,534	333,715	490,827
Total adjustments to reconcile profit (loss)	4,477,339	10,475,707	9,779,718
Income taxes paid (Note 13)	(1,540,196)	(1,974,015)	(2,083,398)
Net cash flows generated from operating activities	2,937,143	8,501,692	7,696,320
Investing activities
Improvements to assets under concession and acquisition of furniture and equipment (Note 8)	(3,328,560)	(2,614,864)	(1,636,325)
Investment in joint venture (Note 17.2f)	(10,556)
Interest received	273,642	342,981	265,350
Restricted cash and equivalents (Note 5.1)	189,474	(118,290)	59,018
Net cash flows used in investing activities	(2,876,000)	(2,390,173)	(1,311,957)
Financing activities
Consideration paid for the non-controlling interest of Airplan			(213,469)
Bank loans received (Note 10)	306,241
Bank loans paid (Note 10)	(243,998)	(152,047)	(3,090,124)
Lease payments - Principal portion		(5,751)
Long-term debt paid (Note 11)	(241,560)	(205,308)
Interest paid (Note 11)	(962,993)	(1,064,764)	(1,139,071)
Dividends paid (Note 12)		(3,000,000)	(2,034,000)
Net cash flows (used) from financing activities	(1,142,310)	(4,427,870)	(6,476,664)
(Decrease) increase in cash and cash equivalents	(1,081,167)	1,683,649	(92,301)
Cash and cash equivalents at the beginning of the year	6,192,679	4,584,507	4,677,454
Exchange (loss) gains on cash and cash equivalents	81,116	(75,477)	(646)
Cash and cash equivalents at the end of the year	$ 5,192,628	$ 6,192,679	$ 4,584,507

Overview_

Overview:	12 Months Ended
	Dec. 31, 2020
Overview:
Overview:	Note 1 - Overview: Grupo Aeroportuario del Sureste, S. A. B. de C. V. (ASUR or the Company) is a Mexican company that was incorporated in April 1998 as a wholly-owned entity of the federal public government to administer, operate, maintain and exploit nine airports in the Southeast of Mexico. The nine airports are located in the following cities: Cancún, Cozumel, Mérida, Huatulco, Oaxaca, Veracruz, Villahermosa, Tapachula and Minatitlán. ASUR and its subsidiaries are collectively referred to as "the Company", "ASUR" or "the Group". The Company operates two companies that provide administrative services: Servicios Aeroportuarios del Sureste, S. A. and C. V. and RH Asur, S. A. de C. V. In addition, Aeropuerto de Cancún, S. A. de C. V. (Cancún Airport) has a more than 95% stake in the following subsidiaries: Caribbean Logistic, S. A. de C. V., Cargo RF, S. A. de C. V and Cancún Airport Services, S. A. de C. V., companies providing storage services, handling services, warehousing and custody of foreign trade merchandise and the related to the premises inspected at airports concessioned to third parties, as well as Cancún Airport Services, S. A. de C. V., whose main activity is to establish and operate shops, establishments and stores for the sale of all kinds of products. In June 1998, the Mexican Department of Communications and Transportation (SCT by its Spanish initials) granted to the Company’s subsidiaries concessions to administer, operate, exploit and develop the nine Southeast airports over a period of 50 years commencing on November 1, 1998. The term of the concessions may be extended by the parties under certain circumstances, in accordance with Article 15 of the Airports Law that establishes, among other things: 1) it had fulfilled the conditions set out in the respective title; 2) if requested before the five years of the concession’s validity begun, and 3) accept the new conditions. Notwithstanding the Company’s rights to administer, operate, exploit, develop and, if applicable, build the nine airports pursuant to the Mexican General Law of National Assets; all the land, furniture and permanent fixed assets located in the airports are the property of the Mexican federal government. Upon expiration of the Company’s concessions, these assets, including any improvements made during the term of the concessions, automatically revert to the Mexican federal government. Through its subsidiary Cancún Airport, the Company holds 60% of the shares of Aerostar Airport Holding, LLC (Aerostar), which operates and manages Aeropuerto Internacional Luis Muñoz Marín (LMM Airport) in San Juan, Puerto Rico, and 100% of the shares of Sociedad Operadora de Aeropuertos Centro Norte, S. A. (Airplan), domiciled in the city of Medellín, Colombia, which operates and administers, through a single concession (contract 8000011-OK), the following six Airports: Enrique Olaya Herrera in Medellín, José María Córdova in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal. As of December 31, 2019, the Company's outstanding capital stock was held by the investing public (66.54)%, and placed in New York (NYSE) and Mexico (BMV), Inversiones and Airport Techniques, SAPI de C.V. (ITA) (7.65)%, CHPAF Holdings, S.A.P.I de C. V. (13.51)%, and Inversiones Productivas Kierke, S. A. de C. V. (12.31)%. As of December 31, 2020, the Company’s outstanding capital stock was held by the investing public (65.57)% and placed in New York (NYSE) and Mexico (BMV), Inversiones y Técnicas Aeroportuarias, S. A. P. I. de C. V. (ITA) (7.65)%, CHPAF Holdings, S.A.P.I de C. V. (up to December 3, 2018, Servicios Estrategia Patrimonial, S. A. de C. V. and Agrupación Aeroportuaria Internacional III, S. A. de C. V.) (14.47)%, and Inversiones Productivas Kierke, S. A. de C. V. (12.31)%. Shareholding is divided amongst different shareholders, without there being an individual or a particular group that controls the Company directly. Significant events – COVID-19 effects On March 11, 2020, the World Health Organization (WHO) designated the COVID-19 outbreak, which began in December 2019, a global pandemic. Governments responded to COVID-19 in many ways, including the placement of restrictions on commercial activities and social interaction, among others. These measures had significant effects on the Company’s airports. The number of airline passengers, both nationwide and worldwide, has decreased as a result of travel restrictions and temporary closure of terminals, which has had an impact on the Company’s aeronautical and non-aeronautical activities. Since the COVID-19 pandemic was declared a world health emergency, the Company’s daily operations have been affected by the social distancing and lockdown measures imposed by government and regulatory authorities. Among the effects COVID-19 has had on the services provided by the Company, we highlight the following: a. b. c. d. Below are the main impacts of COVID-19 on the Company's Consolidated Financial Statements for the fiscal year ended on December 31, 2020: e. f. g. h. i. j. k. l. m.

Segment Information_

Segment Information:	12 Months Ended
	Dec. 31, 2020
Segment information:
Segment information:	Note 2 - Segment information: The Company is a Mexican entity that was incorporated in April 1998 as a wholly-owned entity of the federal public government to administer, operate and if necessary, condition and modernize nine airports in the Southeast of Mexico. The nine airports are located in the following cities: Cancún, Cozumel, Mérida, Huatulco, Oaxaca, Veracruz, Villahermosa, Tapachula and Minatitlán. The Company operates two companies that provide administrative services: Servicios Aeroportuarios del Sureste, S. A. de C. V. and RH Asur, S. A. de C. V. In addition, Cancún Airport holds an interest in the following subsidiaries: 100% in Caribbean Logistic, S. A. de C. V. and Cargo RF, S. A. de C. V, companies providing storage services, handling services, warehousing and custody of foreign trade merchandise and the related to the premises inspected at airports concessioned to third parties, as well as Cancún Airport Services, S. A. de C. V., whose main activity is to establish and operate shops, for the sale of all type of products. As mentioned in Note 1, the Company controls 60% in Aerostar and 100% Airplan through equity interest. The information by segments is shown as follows. Year ended on Holding & Consolidation December, 31 2018 Cancún Aerostar (*) Airplan (**) Mérida Villahermosa Services Other adjustments Total Revenue from contracts with clients: Aeronautical revenue Ps. 4,428,546 Ps. 1,700,859 Ps. 1,276,506 Ps. 469,879 Ps. 201,502 — Ps. 865,618 — Ps. 8,942,910 Non-aeronautical revenue 3,831,325 964,404 396,834 117,277 59,822 Ps. 1,684,204 162,345 Ps. (1,684,654) 5,531,557 Revenue for construction services 205,834 360,004 312,375 4,831 15,604 — 37,126 — 935,774 Operating profit 5,206,971 882,381 239,893 297,468 113,038 605,860 433,358 — 7,778,969 Non-current assets 16,927,804 20,515,694 6,592,640 1,454,497 921,162 28,789,664 4,314,529 (29,335,081) 50,180,909 Total assets 19,002,035 21,607,145 6,905,451 1,857,958 1,241,529 29,525,000 5,377,784 (29,335,081) 56,181,821 Total liabilities 4,528,342 10,040,600 4,575,476 (25,257) 79,070 205,077 97,124 — 19,500,432 Improvements to assets under concession and acquisition of furniture and equipment in the period 364,795 772,009 415,042 7,116 12,671 — 64,692 — 1,636,325 Amortization and depreciation (455,003) (632,236) (452,364) (47,803) (30,147) (640) (142,548) — (1,760,741) Revenue recognized At point in time: Aeronautical revenue 3,846,184 1,245,320 1,200,941 426,070 180,407 — 788,406 — 7,687,328 Non-aeronautical revenue 621,850 621,850 Total 4,468,034 1,245,320 1,200,941 426,070 180,407 — 788,406 — 8,309,178 Over a period time: Aeronautical revenue 543,282 455,539 75,565 41,179 21,027 — 73,068 — 1,209,661 Non-aeronautical revenue 2,888,043 954,626 395,410 57,554 39,395 1,684,204 143,100 (1,684,654) 4,477,678 Revenue for construction services 205,834 360,004 312,375 4,831 15,604 — 37,126 — 935,774 Total Ps. 3,637,160 Ps. 1,770,169 Ps. 783,350 Ps. 103,564 Ps. 76,027 Ps. 1,684,204 Ps. 253,294 Ps. (1,684,654) Ps. 6,623,114 (*) Subsidiary located in Puerto Rico. (**) Subsidiary located in Colombia. Holding & Consolidation Year ended on December, 31 2019 Cancún Aerostar (*) Airplan (**) Mérida Villahermosa Services Other adjustments Total Revenue from contracts with clients: Aeronautical revenue Ps. 4,550,164 Ps. 1,870,428 Ps. 1,391,657 Ps. 579,727 Ps. 251,468 Ps. 953,531 Ps. 9,596,975 Non-aeronautical revenue 4,024,354 1,100,573 507,076 129,527 58,270 Ps. 1,748,731 169,120 Ps. (1,749,181) 5,988,470 Revenue for construction services 249,127 335,148 175,998 134,104 57,225 284,591 — 1,236,193 Operating profit 5,355,787 1,068,148 441,413 384,115 152,041 585,440 494,350 — 8,481,294 Non-current assets 17,533,430 19,454,107 5,836,603 1,780,146 1,003,909 30,598,817 4,628,280 (31,165,267) 49,670,025 Total assets 21,463,802 20,468,947 6,573,460 1,981,396 1,301,195 31,343,675 5,548,880 (31,165,474) 57,515,881 Total liabilities 5,383,343 8,807,985 4,161,205 (27,836) 78,227 244,152 97,834 (206) 18,744,704 Improvements to assets under concession and acquisition of furniture and equipment in the period 1,076,257 376,649 176,335 407,684 117,405 — 460,534 — 2,614,864 Amortization and depreciation (463,988) (659,873) (482,130) (48,371) (30,693) (7,194) (144,648) — (1,836,897) Revenue recognized At point in time: — Aeronautical revenue 3,933,693 1,369,066 1,322,648 530,736 229,217 — 870,622 — 8,255,982 Non-aeronautical revenue 662,485 233,106 — — — — — — 895,591 Total 4,596,178 1,602,172 1,322,648 530,736 229,217 — 870,622 — 9,151,573 Over a period time: Aeronautical revenue 616,471 501,362 69,009 48,991 22,251 82,909 1,340,993 Non-aeronautical revenue 3,361,869 867,467 507,076 129,527 58,270 1,748,731 169,120 (1,749,181) 5,092,879 Revenue for construction services 249,127 335,148 175,998 134,104 57,225 — 284,591 — 1,236,193 Total Ps. 4,227,467 Ps. 1,703,977 Ps. 752,083 Ps. 312,622 Ps. 137,746 Ps. 1,748,731 Ps. 536,620 Ps. (1,749,181) Ps. 7,670,065 (*) Subsidiary located in Puerto Rico. (**) Subsidiary located in Colombia. Year ended on Holding & Consolidation December, 31 2020 Cancún Aerostar (*) Airplan (**) Mérida Villahermosa Services Other adjustments Total Revenue from contracts with clients: Aeronautical revenue Ps. 2,218,230 Ps. 1,808,102 Ps. 488,981 Ps. 281,659 Ps. 132,751 — Ps. 482,695 — Ps. 5,412,418 Non-aeronautical revenue 2,252,157 740,450 296,961 90,431 42,103 Ps. 1,265,920 133,496 Ps. (1,266,291) 3,555,227 Revenue for construction services 1,855,747 353,686 6,918 728,718 154,155 — 557,862 — 3,657,086 Operating profit 2,079,965 923,518 (242,234) 95,167 40,020 327,631 52,109 — 3,276,176 Non-current assets 18,899,582 20,229,990 5,604,037 2,426,454 1,097,864 33,164,914 5,029,721 (33,757,400) 52,695,162 Total assets 22,406,388 21,630,906 6,090,371 2,913,304 1,345,826 33,834,595 5,947,221 (33,757,400) 60,411,211 Total liabilities 5,557,692 8,934,439 3,826,600 49,910 78,198 184,800 86,366 — 18,718,005 Improvements to assets under concession and acquisition of furniture and equipment in the period 1,720,381 400,500 6,918 570,940 118,736 — 511,085 — 3,328,560 Amortization and depreciation (487,333) (746,524) (461,563) (49,427) (31,897) (6,976) (151,046) — (1,934,766) Revenue recognized At point in time: Aeronautical revenue 1,888,076 953,715 459,655 254,210 120,688 — 439,320 — 4,115,664 Non-aeronautical revenue 319,367 142,135 — — — — — — 461,502 Total 2,207,443 1,095,850 459,655 254,210 120,688 — 439,320 — 4,577,166 Over a period time: Aeronautical revenue 330,154 854,387 29,326 27,449 12,063 — 43,375 — 1,296,754 Non-aeronautical revenue 1,932,790 598,315 296,961 90,431 42,103 1,265,920 133,496 (1,266,291) 3,093,725 Revenue for construction services 1,855,747 353,686 6,918 728,718 154,155 — 557,862 — 3,657,086 Total Ps. 4,118,691 Ps. 1,806,388 Ps. 333,205 Ps. 846,598 Ps. 208,321 Ps. 1,265,920 Ps. 734,733 Ps. (1,266,291) Ps. 8,047,565 (*) Subsidiary located in Puerto Rico (**) Subsidiary located in Colombia

Revenue from Contracts with Cus

Revenue from Contracts with Customers:	12 Months Ended
	Dec. 31, 2020
Revenue from Contracts with Customers:
Revenue from Contracts with Customers:	Note 3 - Revenue from Contracts with Customers: 3.1) Revenue recognition Airports operated by the Company receive income from external clients for aeronautical services rendered to airlines and from rendering complementary services. The Company also recognizes income from construction services arising from concession agreements with government entities. Following is a description of the principal types of service agreements from which the Company receives income. 3.1.1) Aeronautical services The Company operates airports in three countries (Mexico, Puerto Rico and Colombia), providing different aeronautical services involving principally the following performance obligations. a. Passenger fee rates (Airport Use Rate – TUA, by its initials in Spanish), which are calculated based on total outgoing passengers (other than diplomats, infants and passengers in transit) making use of air terminals operated by the Company. b. Landing rates, which contemplate landing services, the use of runways, taxiing strips, and bands. c. Platform use fees, based on the time an aircraft remains at a terminal after landing. d. Security, calculated on the basis of the total number of incoming and outgoing passengers. e. Baggage inspection fee, calculated on the basis of total number of outgoing passengers. f. Use of passenger walkways, which consists of rendering passenger walkways service connecting an aircraft to the terminal after landing. g. Fee for the use of passenger documentation counters; the fee is applied on the basis of the holding of documentation for one-hour periods. After the first hour has elapsed, the fee is charged proportionately for 30‑minute increments. Revenue is measured based on the consideration specified in the tariff regulating system applicable to airports in each country for each performance obligation identified. In Mexico, these are regulated by the Secretariat of Communications and Transport (SCT), in Puerto Rico by the FAA and in Colombia by Aerocivil. In its capacity as operator of the LMM Airport, Aerostar entered into Airport Use Agreements with the main airlines serving LMM Airport, referred to as "Signing Airlines". The agreements have a term of 15 years, counted as from February 27, 2013, with an option to be terminated in advance by agreement of the parties. If, upon completion of the effective term, no new use agreements have been entered into, each of the Airport Use Agreements in force at that date will continue to be binding until new use agreements are signed. Pursuant to the Airport Use Agreements, Aerostar is entitled to receive the following annual contributions from the airlines serving at LMM Airport: - - - Passenger, landing and security rates are recorded at a particular point in time, once the aircraft departure manifest has been delivered. Income arising from other performance obligations is recorded over time as the services are rendered. Discounts The Company may apply discounts to its rates, provided they are not discriminatory in the light of the laws in effect in the countries in which the Company operates. Discounts are granted based on the discount policy and conditions negotiated with the National Autotransportation Chamber (CANAERO), and regulated income must be delivered within a period of 30 days. Revenues are recorded net of estimated discounts based on applicable rates. The prompt-payment discount for regulated income principally TUA is established in each of the contracts signed with the airlines, and is subtracted from the aforementioned income. In 2018, 2019 and 2020, the discount amounted to Ps.45,293, Ps.47,374 and Ps.44,561, respectively. There is no balance for the contractual liability for that item. Terms of payment According to the airport service contract signed with clients, the credit term is 30 days; and the first of each month for complementary services. During the year, by way of exception, and due to the COVID-19 pandemic, the Company entered into agreements with airport clients in Mexico and Colombia, whereby the credit term was extended from 30 to 180 days, effective until April 30, 2021. After that date the credit term will again be 30 days, as stipulated in the original agreement. The agreements also included the negotiation of accounts receivable owed at the date of execution, which at December 31, 2020 amount to Ps.185,140 and Ps.60,617 for the Company’s Mexico operations and Airplan, respectively. These amounts are to be recovered by promissory notes signed with clients falling due in less than a year. 3.1.2) Non-aeronautical services The Company generates income from non-aeronautical services, which involve basically the following performance obligations: a. Access rates to nonpermanent overland transportation based on the number of access events experienced by the transportation companies operated by third parties providing passenger transportation services at the terminal. b. Carparks, rates based on the time vehicles remain at public parking areas. c. Retail sales, recorded when a product is sold to a client and payment on the transaction is made at the time of purchase. Revenue arising from access rates to overland transportation and retail sales are recorded at a particular point in time, to the extent that the performance obligation is satisfied and the promised goods and services are transferred, while parking area income is recorded over time. Contracts for commercial income IFRS 15 must be applied to all contracts with clients. However, there are exceptions, such as contracts for the leasing of commercial space, which fall under IFRS 16 “Leases”. Leasing income (non-regulated activities) are considered complementary services to the supply of regulated services so there is no separate infrastructure other than the intangible recognized under Note 8, nor is a right of use to be accounted for separately in the adoption of IFRS 16. Presently, space leased at airports to airlines and other commercial lessees comprise the most significant source of income related to non-aeronautic services. Leasing income is accrued monthly and is determined by applying a percentage established in the lease contract to income from actual sales of lessees (share of sales), or an agreed minimum fee. Commercial leasing operations include the leasing of automobiles, the sale of food and beverages, retail sales, sales made at kiosks, graphic advertising, overland transportation, fixed operations and other services rendered. Commercial income is partially recorded on the basis of lessee income and is partially based on minimum lease rates. At December 31, 2018, 2019 and 2020, variable leasing income was Ps.3,371,630, Ps.3,435,381 and Ps.1,931,965, respectively, and Ps.750,079, Ps.830,288 and Ps.612,509, respectively, for fixed leasing rates. 3.1.3) Construction services As an operator of airport concessions, the Company is required to improve items under concession. Works carried out within the airport are based on development plans authorized by the regulators. Income from construction services are recognized in accordance with the methods prescribed (input method) for measuring progress towards completion approved by the grantor. Improvements made are expected to complement the infrastructure of the airport operated by the Group. IFRS 15 establishes that during the construction period of the infrastructure related to concessions received, they must be shown as “contract assets” in the statement of financial position, regardless of the type of consideration received (financial asset or intangible asset). See Note 8. Construction services carried out by the Group do not entitle it to a direct cash consideration; rather, it is entitled to charge users for airport services rendered at the terminals during the concession period. Income from construction services is measured at fair value of the services rendered, which increased the value of the intangible asset, plus the cost of capitalizable financing. As of December 31, 2018, 2019 and 2020, revenues from construction services in Mexico were Ps.263,395, Ps.725,047 and Ps.3,296,482 in Puerto Rico they were Ps.360,004, Ps.335,148 and Ps.353,686, and in Airplan were Ps.312.375, Ps.175,998 and Ps.6,918 respectively. 3.1.4) Airports Law and Regulations Mexico Under the Airports Law and regulations thereto, company income is classified as Airport Services, Complementary Services and Commercial Services. Airport Services mainly consist of the use of runways, taxiways and platforms for landings and departures, parking for aircrafts, use of mechanical boarders, security services, hangars, car parking, as well as the general use of the terminals and other infrastructure by the aircrafts, passengers and cargo, including the rental of space that is essential for the operation of airlines and suppliers of complementary services. Complementary Services consist mainly of ramp services and handling of luggage and cargo, food services, maintenance and repair and related activities that provide support to the airlines. Revenues from access fees charged to third parties that provide complementary services are classified as Airport Services. The Rate Regulation Law provides that the following sources of revenues are regulated under this system: · Revenues from airport services (as defined under the Mexican Airport Law), other than automobile parking, and · Access fees earned from third parties providing complementary services, other than those related to the establishment of administrative quarters that the SCT determines to be non-essential. Non-regulated Services consist of services that are not considered essential for an airport's operation, such as the rental of spaces to businesses, restaurants and banks. Access fees and income from other services are recognized as services are rendered. The following sets forth the Company revenue at December 31, 2018, 2019, and 2020 using the classification established in the Airport Law and the Regulations thereto and on the basis of performance obligations established under IFRS 15. Year ended of December 31, 2018 2019 2020 Regulated services: Airport services for revenue from contracts with clients (*): Passengers fees Ps. 6,547,645 Ps. 7,005,018 Ps. 3,476,804 Landing fees 1,047,687 1,148,747 983,173 Platform 413,129 405,814 395,432 Seurity services 91,996 102,216 46,553 Baggage inspection fees 268,940 296,143 140,502 Passengers walkway 509,440 575,464 333,134 Passengers documentation counters 18,152 16,821 9,383 Other airport services 325,546 340,007 252,777 Ps. 9,222,535 Ps. 9,890,230 Ps. 5,637,758 Non regulated services: Non regulated services for revenue from contracts with customers: Retail stores Ps. 621,850 Ps. 895,591 Ps. 461,502 Access fees on non permanent ground transportation 57,885 63,159 29,967 Car parking and related Access fees 298,536 319,200 171,193 Other services 151,952 151,596 122,751 1,130,223 1,429,546 785,413 Commercial services 4,121,709 4,265,669 2,544,474 Total non regulated services (**) 5,251,932 5,695,215 3,329,887 Construction services 935,774 1,236,193 3,657,086 Total Ps. 15,410,241 Ps. 16,821,638 Ps. 12,624,731 (*) For 2018, 2019 and 2020, this amount includes Mexico regulated income of Ps.6,245,170, Ps.6,628,146 and Ps.3,340,674, Aerostar regulated income of Ps.1,700,859, Ps.1,870,427 and Ps.1,808,102, Airplan regulated income of Ps.1,276,506, Ps.1,391,657 and Ps.488,981, respectively. (**) This line item in the consolidated statement of income (non-aeronautical services) includes complementary and airport services totaling Ps.279,625, Ps.293,256 and Ps.225,340 for the 2018, 2019 and 2020 periods, respectively. Puerto Rico According to the agreement entered into by the Puerto Rico Authority and Aerostar, Aerostar income is classified as either regulated services or non-regulated services. See Notes 3.1.1 and 3.1.2. Colombia Under resolution 4530 of the Special Administrative Unit of Civil Aeronautics in Colombia, Airplan revenue is classified as either regulated services or non-regulated services. See Notes 3.1.1 and 3.1.2. The following table sets forth revenue from leasing of commercial spaces by type for the years indicated. Year ended of December 31, 2018 2019 2020 Commercial revenues: Duty free shops Ps. 1,861,116 Ps. 1,785,508 Ps. 991,833 Food and beverage 738,371 820,001 449,340 Advertising revenues 161,214 187,192 92,683 Car rental companies 611,864 673,969 485,725 Banking and currency exchange servcies 119,855 115,927 72,563 Teleservices 14,139 16,038 15,174 Ground transportations 76,106 98,033 49,721 Other services 539,044 569,001 387,435 Total commercial revenues Ps. 4,121,709 Ps. 4,265,669 Ps. 2,544,474 The COVID-19 pandemic has affected the travel industry and in some parts of the world governments have introduced travel bans and restrictions. As a result, passenger traffic in Mexico, Puerto Rico and Colombia began to decrease in the second half of March 2020, affecting the Company’s aeronautical revenues and non-aeronautical revenues. The follows table sets the domestic and international passenger traffic for the years, 2019 and 2020: Year ended of December 31, 2019 2020 Domestic passenger traffic: Mexico 16,684 9,246 Puerto Rico 8,456 4,548 Colombia 10,231 3,625 Total domestic passengers 35,371 17,419 International passenger traffic: Mexico 17,478 7,283 Puerto Rico 992 298 Colombia 1,821 590 Total international passengers 20,291 8,171 Total passengers 55,662 25,590 The effects of the decrease in passenger traffic as a result of COVID-19 on aeronautical and non-aeronautical revenue by country are shown below, without considering construction revenue, which does not depend directly on passenger traffic: Changed % Year ended of December 31, compared to 2019 2019 2020 Aeronautical revenue Mexico Ps. 6,334,890 Ps. 3,115,335 (50.82) Aerostar 1,870,428 1,808,102 (3.33) Airplan 1,391,657 488,981 (64.86) Total aeronautical revenue Ps. 9,596,975 Ps. 5,412,418 (43.60) Non-aeronautical revenue Mexico 4,380,821 2,517,816 (42.53) Aerostar 1,100,573 740,450 (32.72) Airplan 507,076 296,961 (41.44) Total non-aeronautical revenue Ps. 5,988,470 Ps. 3,555,227 (40.63) Total without construction revenue Ps. 15,585,445 Ps. 8,967,645 (42.46) As shown in the following, the estimates for future revenues (per year), arising from non-cancelable operating leases considering minimum rent commercial leases. For the years that will end December 31: 2021 Ps. 2,515,572 2022 2,315,111 2023 2,184,496 2024 1,943,444 2025 1,857,885 2026 to 2028 2,380,113

Costs and expenses by nature_

Costs and expenses by nature:	12 Months Ended
	Dec. 31, 2020
Costs and expenses by nature:
Costs and expenses by nature:	Note 4 - Costs and expenses by nature: January to December 31, 2018 2019 2020 Short term benefits Ps. 1,118,926 Ps. 1,199,217 Ps. 1,039,883 Electric power 458,827 474,719 382,026 Maintenance and conservation 673,603 699,557 447,884 Professional fees 306,169 308,740 251,621 Insurance and bonds 200,477 225,252 127,750 Surveillance services 310,065 325,613 275,206 Cleaning services 229,003 232,219 207,599 Technical assistance (Note 15.4) 386,249 404,086 175,615 Right of use of assets under concession (DUAC) (1) 898,253 986,850 535,379 Amortization and depreciation of intangible assets, furniture and equipment 1,760,741 1,836,897 1,934,766 Consumption of commercial items 300,845 323,899 169,298 Construction services (Note 3.1.3) 935,774 1,236,193 3,657,086 Termination benefits (Note 18.17) 1,595 1,922 2,382 Employees’ statutory profit sharing 8,052 10,250 3,115 Impairment of accounts receivable (Note 6) 6,241 12,127 154,417 Other 171,089 267,521 143,409 Total aeronautical and non-aeronautical services costs, costs of construction services and administrative expenses Ps. 7,765,909 Ps. 8,545,062 Ps. 9,507,436 (1) As of December 31, 2018, 2019 and 2020, Ps.458,290, Ps.484,402 and Ps.254,337, respectively, correspond to the consideration for the concessions in Mexico, Ps.312,244, Ps.361,029 and Ps.149,602 correspond to the consideration of the Airplan concession at 19% of gross revenues from the period October 19 to December 31, 2018, from the year 2019 and 2020, respectively, and Ps.127,719, Ps.141,419 and Ps.131,440, for the consideration of the Aerostar concession at 5% of the airport’s gross receipts from May 31, to December 31, 2018, as of December 31, 2019 from the year 2019 and 2020, respectively. 4.1) CARES Act - Aerostar On May 12, 2020, the United States Government, through the FAA, awarded Aerostar a financial aid grant under the CARES Act amounting to USD33,417 (approximately Ps.717,590) to respond to the impacts of COVID-19. These funds may be used by the Company within a period of four years and for any purpose for which airport revenues may be lawfully used, except for new airport development projects. The funds will be received by means of reimbursements once the invoice for the expense incurred has been submitted to the FAA through the established means. These invoices must include sufficient detail to permit the FAA to verify compliance with its Revenue Use Policy. After receiving reimbursement of the verified expenses, the Company discounts the related verified expenses within the same period, as refunds to the relevant authorities are not possible. At December 31, 2020, the Company is not in breach of conditions and there are no other contingencies relating to these grants. The Company did not benefit directly in any other way from government assistance. Throughout 2020, the Company received USD17,125 (approximately Ps.367,752) for reimbursements of invoices submitted to the FAA, of which Ps.339,681 are recognized net of the pertinent expense or cost at December 31, 2020. The items to which they relate are the following: Short-term benefits Ps.165,894; Amortization of insurance and bonding Ps.142,274; Others Ps.23,650, which includes sewage services, waste disposal, among others; and Maintenance and preservation Ps.7,863. Advance payments for Insurance and bonding are presented in the Statement of Financial Position as deductions, in accordance with the accounting policy. (See Note 17.22)

Cash and cash equivalents_

Cash and cash equivalents:	12 Months Ended
	Dec. 31, 2020
Cash and cash equivalents:
Cash and cash equivalents:	Note 5 - Cash and cash equivalents: December 31, 2019 2020 Cash and cash held at banks Ps. 3,642,037 Ps. 3,514,293 Short term investments 2,550,642 1,678,335 Total cash and cash equivalents Ps. 6,192,679 Ps. 5,192,628 5.1) Restricted cash and cash equivalents As of December 31, 2019 and 2020, cash and cash equivalents include the amounts collected as of December 31, 2019 and 2020 by Aerostar for the concept of “Passenger Facility Charge” (PFC) which are restricted to be used to fund investment projects in airport infrastructure previously authorized by the FAA of Ps.26,849 and Ps.5,055, respectively. Additionally, as of December 31, 2019, cash and cash equivalents includes funds related to the recovery of insurance in 2019 of Ps.138,773, which are restricted until a work certification is obtained that indicates that the funds were used for the defined purpose. (See Notes 15.e and 17.6.)

Accounts receivable - Net_

Accounts receivable - Net:	12 Months Ended
	Dec. 31, 2020
Accounts receivable - Net:
Accounts receivable - Net:	Note 6 - Accounts receivable - Net: 6.1) Accounts receivable December 31, 2019 2020 Clients Ps. 1,195,559 Ps. 1,458,653 Less: impairment provision (191,766) (346,183) 1,003,793 1,112,470 Notes receivable from clients 245,757 Total accounts receivable Ps. 1,003,793 Ps. 1,358,227 The expectation for collection of the account receivable in the short term is one month in relation to the reporting date, except for those customers with whom agreements were signed in Mexico for airport services, derived from the COVID-19 pandemic, in which case, the term for such account receivable is extended until April 30, 2021 and includes on the line documents receivable from customers. Accounts receivable are comprised mainly of TUA paid by passengers (other than diplomats, infants and passengers in transit) who travel using the airport terminals operated by the Company. The balance at December 31, 2019 and 2020 amounted to Ps.615,223 and Ps.547,810, respectively. 6.2) Notes receivable from clients The COVID-19 pandemic has affected the travel industry, and, in some parts of the world, governments introduced travel bans and restrictions, reducing passenger traffic. The Company has agreed with several clients, whose income derives from airport services, in view of the economic recession caused by COVID-19, to extend the collection terms from 30 to 180 days guaranteed upon execution of the agreement through the signature of promissory notes, establishing monthly payments and falling due within a term no longer than a year. These agreements were entered into with clients for this single occasion, as a result of COVID-19 and neither represents a change in the policies nor replaces the original agreements. Due dates for these clients will return to 30 days once the term of these agreements expire as from the second quarter of 2021. These notes are grouped within the Clients line as they represent accounts receivable from clients arising from airport services provided, which were exchanged for promissory notes to secure collection upon execution of the agreement, which may be collected in the event of default. At December 31, 2020, the balance of notes receivable from clients entered into in Mexico and by Airplan amounts to Ps.185,140 and Ps.60,617, respectively with the following features: Mexico - Falling due no later than a year at the interest rate for Federal Treasury Certificates (Cetes) plus 7 points multiplied by 1.5, interest accrued in the period is not material. Airplan - Falling due before one year at the interest rate of DTF plus four points, interest accrued in the period is not material. These notes receivables were subject to impairment testing and analysis, and therefore, they have been grouped in the same category of risk. Considering the prospective factors of clients with which notes receivable are recorded, no expected losses were identified as regards notes receivable. 6.3) Impairment of accounts receivable After an assessment the Company made regarding its clients, the Company increased its consolidated impairment allowance for accounts receivable by Ps.154.417. At December 31, 2020, the total balance of unimpaired accounts receivable was Ps.474,854, (Ps.580,914 at December 31, 2019). These accounts refer to clients that have no recent record of noncompliance, and due to their positive performance with the company, no increase the level of credit risk was identified in our prospective assessment. In Mexico, impairment of accounts receivable for the year ended December 31, 2020 was Ps.70,470, mainly representing by one airline client, who ceased operations, and whose total balance of accounts receivable balance amounts to Ps.65,452. It is expected that the routes and frequencies operated by this client, to and from our airports in Mexico, will be covered by other airlines in the next years, as the level of passenger traffic recovers. Although operations for the year have diminished in our Mexican airports, in accordance with the Company’s analysis, there is neither incremental operational risk nor an increase in the credit risk of accounts receivable. Difficulties faced by the aeronautical industry as a result of COVID-19 caused the financial restructuring of some airline clients; however, no default has been recorded and at December 31, 2020, in accordance with our analyses, no future noncompliance is expected, as these clients were able to access financing or governmental economic aid, in the case of international airlines, which will enable them to continue meeting their financial commitments. The Company monitors the performance of its accounts receivable and takes measures in this regard, as it is empowered to prevent the provision of services if there are situations outside its policy for maturities exceeding 30 days. With this, the Company keeps its exposure at a low risk level. Aerostar’s impairment of accounts receivable for the year ended December 31, 2020 was Ps.50,842, mainly accounting for certain international airlines, which, according to the Company’s analysis, may cease some recurring international operations in the LMM Airport as a result of the decrease in international passenger traffic (approximately 70% compared to 2019). The majority of passenger traffic at LMM Airport is domestic. In 2020, domestic traffic accounted for 80% of traffic, while in 2019, it accounted for 85%. National airlines in the United States benefited from government grants, as part of the CARES Act. The Company expects that national airlines will use the funds arising from the CARES Act to fulfill their operating commitments, including accounts receivable balances held by the Company as of December 31, 2020. As international airlines do not benefit from governmental aid in their respective countries (or United States governmental aid) and because of the other factors described herein, the Company assessed that its collection from international airlines’ could be at risk. Airplan’s impairment of accounts receivable for the year ended December 31, 2020 amounted to Ps.33,105. Due to the temporary closure of terminals in Colombia, Airplan’s accounts receivables were significantly reduced. In accordance with the analysis performed by the Company, no new closures are expected that may lead to an incremental risk in Airplan’s own and Airplan’s client transactions. Due to the difficulties faced by the aeronautical industry as a result of COVID-19, as of December 31, 2020, some of our airport clients are undergoing financial restructuring. In accordance with our analysis, no significant future noncompliance is expected as these clients were able to access to refinancing plans and aid from the Colombian Government. The Company monitors the performance of its accounts receivable and takes measures in this regard, as it is empowered to prevent the provision of services if there are situations outside its policy for maturities exceeding 30 days. With this, the Company keeps its exposure at a low risk level. The movements in the impairment provision are as follows: Provision for impairment at January 1,2019 Ps. 179,639 Application, net of Mexico's estimate during the period (369) Application, net of Aerostar's estimate during the period (5,585) Airplan's provision impairment 18,081 Provision for impairment at December 31,2019 Ps. 191,766 Application, net of Mexico's estimate during the period Ps. 70,470 Application, net of Aerostar's estimate during the period 50,842 Airplan's provision impairment 33,105 Provision for impairment at December 31,2020 Ps. 346,183 Provision for impairment of accounts receivable has been recorded in the consolidated comprehensive income statement under cost of services, and the amounts charged to the provision are written off from accounts receivable when recovery is not expected. In order to measure expected credit losses, accounts receivable and contract assets have been grouped on the basis of their shared credit risk features and days past due. The Company held no relevant contract assets at January 1 or December 31, 2019 and 2020. The expected loss rates are based on the profiles for payment of sales in a 12‑month period prior to December 31, 2019 and 2020 or January 1, 2019 and 2020, respectively, and on historical credit losses experienced within that period. Historical loss rates are adjusted to reflect current and prospective information on macroeconomic factors affecting client capacity for covering accounts receivable. The Company has determined that the economic situation of a country can have adverse effects on the transportation industry, in addition to the cost of complying with aviation regulations and union pressures on airlines, which are the most relevant factors, and therefore adjusts historical loss rates based on changes expected in those factors. On this basis, the provision for losses as of December 31, 2019 and December 31, 2020 was determined as follows for accounts receivable and contract assets: More than Due to expire 1 to 90 91 to 180 181 to 365 365 Expected loss rate 2019: Mexico % 0.02 % 0.02 % 100 % 100 % Aerostar 1.00 % 2.5% - 5.0 % 15.00 % 50.00 % 100 % Airplan 0.83 % 0.83 % 0.83 % 100 % 100 % Due to More than Expected loss rate 2020: expire 1 to 90 91 to 180 181 to 365 365 Mexico 0.00 % 0.02 % 19.20 % 100 % 100 % Aerostar 5.40 % 5.10 % 43.70 % 88 % 100 % Airplan 0.83 % 0.70 % 0.83 % 100 % 100 % More Total estimate Due to expire 1 to 90 91 to 180 181 to 365 than 365 12/31/2019 At December 31, 2019 Mexico’s accounts receivables — Ps. 1,012 Ps. 1,733 Ps. 126 Ps. 128,930 — Mexico’s provision impairment 128,930 Ps. 128,930 Aerostar’s account receivables Ps. 159,796 97,697 2,176 712 31,236 — Aerostar’s provision impairment 1,599 3,611 544 499 31,236 37,489 Airplan’s accounts receivables — 114,858 52,410 15,357 8,602 — Airplan’s provision impairment — 953 435 15,357 8,602 25,347 Total estimate Ps. 191,766 More Total estimate Due to expire 1 to 90 91 to 180 181 to 365 than 365 12/31/2020 At December 31, 2020 Mexico’s accounts receivables Ps. 474,854 Ps. 59,819 Ps. 14,292 Ps. 66,816 Ps. 129,056 — Mexico’s provision impairment 784 2,744 66,816 129,056 Ps. 199,400 Aerostar’s account receivables 444,515 60,421 3,702 4,896 55,360 — Aerostar’s provision impairment 23,984 3,084 1,619 4,284 55,360 88,331 Airplan’s accounts receivables 73,865 1,610 37,214 32,233 — Airplan’s provision impairment 516 110 25,593 32,233 58,452 Total estimate Ps. 346,183 The Group limits its exposure to credit risk of accounts receivable by establishing a maximum payment term of 30 days for clients. In the fiscal year ended December 31, 2020, the accounts receivable past due not impaired within the range from 1 to 90 days amounted to Ps.189,721 (Ps.209,003 in 2019). At December 31, 2020 the total balance of unimpaired past due accounts receivable past due within 1 to more than 365 days, at December 31, 2020, amounted to Ps.217,085 (Ps.264,682 in 2019).

Land, furniture and equipment -

Land, furniture and equipment - Net:	12 Months Ended
	Dec. 31, 2020
Land, furniture and equipment - Net:
Land, furniture and equipment - Net:	Note 7 - Land, furniture and equipment - Net: At December 31, 2019, and 2020, the land furniture and equipment are made up as follows: Foreign currency 1/1/2019 translation Additions Disposals transfers 12/31/2019 Land Ps. 302,323 Ps. 302,323 Furniture & equipment 83,466 Ps. (270) Ps. 27,424 110,620 Machinery & equipment 80,511 (3,869) 46,571 Ps. (16,370) 106,843 Computer equipment 45,812 980 6,181 52,973 Transport equipment 22,064 (1,295) 9,549 30,318 Improvements to leased premises 60,640 5,040 4,615 (11,137) 59,158 Accumulated depreciation (104,478) 1,643 (66,284) 27,507 (141,612) 490,338 2,229 28,056 — 520,623 Equipment in transit 68,142 (377) (67,765) — Ps. 558,480 Ps. 1,852 Ps. 28,056 Ps. (67,765) Ps. 520,623 Foreign currency 1/1/2020 translation Additions Disposals transfers 12/31/2020 Land Ps. 302,323 — — — Ps. 302,323 Furniture & equipment 110,620 Ps. 515 Ps. 5,927 — 117,062 Machinery & equipment 106,843 4,013 32,762 — 143,618 Computer equipment 52,973 931 17,667 — 71,571 Transport equipment 30,318 1,420 1,531 — 33,269 Improvements to leased premises 59,158 569 3,723 — 63,450 Accumulated depreciation (141,612) (401) (84,895) — (226,908) Ps. 520,623 Ps. 7,047 Ps. (23,285) — Ps. 504,385 The consolidated depreciation expense for 2018, 2019 and 2020 was Ps.44,298, Ps.66,284 and Ps.84,895, respectively. This includes the depreciation of Aerostar for Ps.40,410, Ps.54,524 and Ps.72,474 and the depreciation of Airplan for Ps.1,066, Ps.1,506 and Ps.1,834 for the years ended December 31, 2018, 2019 and 2020, respectively, and which has been charged in aeronautical and non-aeronautical services costs, and administrative expenses. The depreciation expense for 2019 and 2020 for the right-of-use assets for consolidated leasing was Ps.6,653 and Ps.6,689 in Mexico, there was no recognition of right-of-use assets for leasing in Aerostar and Airplan. 7.1) As of December 31, 2019 and 2020, right-of-use assets associated with property leases, amounted to Ps.14,774 and Ps.9,513, respectively, and the associated liability amounted to approximately Ps.20,422, and Ps.17,260 respectively, which are not significant. Lease liabilities are measured at the present value of remaining lease payments, discounted at the interest rate of the lessee. The weighted average interest rates of the lessee applied to lease liabilities at January 1, 2019 were 9.04% and 9.2% for the new contracts of the year during 2020. The Company has executed a contract for the lease of corporate offices and commercial vehicles which were recognized as right-of-use assets and are incorporated into Land, furniture and equipment, Net. The general terms of the lease contracts are shown below: Corporate offices in Mexico: Separate contracts govern our corporate offices in Mexico. These contracts include the following terms and conditions: i) 5-year term; ii) monthly lease payments of USD23,549 (Ps.469 thousand approximately); iii) a security deposit equivalent to 2-months' rent; iv) the monthly base rent will be increased annually after the first year of the contract, in line with the increase in the U.S. Consumer Price Index; and v) in the event of nonpayment of principal, default interest will accrue at the most recent interest rate in U.S. dollars published by the Wall Street Journal, the prime rate plus ten basis points. Lease of commercial vehicles in Mexico: A framework contract, governs our lease of commercial vehicles in Mexico, with separate contracts by vehicle, which includes the following terms and conditions: i) minimum term of 48 months; ii) monthly fixed payments and an extraordinary one-off rent payable in the first month; iii) cash value to be settled at the end of the minimum term; iv) the lessee shall have a preferential right to acquire the underlying assets at the end of the contractual term; and) in the event of nonpayment of lease payments, default interest shall accrue at a monthly rate of 3%. The lease agreements and service contracts for which lease assets were identified in accordance with IFRS 16 were not significant for the Company. See Note 17.1.

Intangible assets, airport conc

Intangible assets, airport concessions and goodwill - Net:	12 Months Ended
	Dec. 31, 2020
Intangible assets, airport concessions and goodwill - Net:
Intangible assets, airport concessions and goodwill - Net:	Note 8 - Intangible assets, airport concessions and goodwill - Net: The movements of intangible assets of airport concessions in the periods presented in the consolidated financial statements are as follows: Foreign currency 1/1/2019 translation Additions (*) Transfers 12/31/2019 Concessions (Regulated Activity) Ps. 49,961,253 Ps. (961,446) Ps. 591,315 Ps. 995,514 Ps. 50,586,636 Contracts assets 671,496 1,236,196 (929,632) 978,060 Contractor advance 762,578 (65,882) 696,696 Licences and ODC 249,671 30,126 279,797 Commercial Right’s (Unregulated Activity) 6,531,631 (381,902) 6,149,729 Goodwill 2,567,365 — 2,567,365 Accumulated amortization (10,395,094) 33,462 (1,770,613) (12,132,245) Ps. 49,586,322 Ps. (1,309,886) Ps. 849,602 — Ps. 49,126,038 Foreign currency 1/1/2020 translation Additions (**) Transfers 12/31/2020 Concessions (Regulated Activity) Ps. 50,586,636 Ps. 1,059,370 Ps. 107,144 Ps. 932,376 Ps. 52,685,526 Contracts assets 978,060 1,295 3,036,386 (311,676) 3,704,065 Contractor advance 696,696 — 355,809 (620,700) 431,805 Licences and ODC 279,797 84,930 364,727 Commercial Right’s (Unregulated Activity) 6,149,729 340,507 6,490,236 Goodwill 2,567,365 — 2,567,365 Accumulated amortization (12,132,245) (79,297) (1,849,871) (14,061,413) Ps. 49,126,038 Ps. 1,321,875 Ps. 1,734,398 Ps. 52,182,311 (*) The most significant additions made in 2019 are a) beginning of the first stage of extension of the Mérida Airport terminal; expansion of runways and taxiways in Huatulco Airport; land for the expansion works of terminal four of the Cancún Airport, and b) last stage of the construction of the building of the cargo terminal of the Rionegro Airport and completion of the construction of the modules connecting the terminal building with the parking lot at Rionegro Airport. (**) The most significant additions made in 2020 are a) the expansion of the terminal building, commercial platform, runways, taxiways, and roads at the Mérida Airport; b) the commencement of works for the expansion of Terminal 3 and 4 and the expansion of runways, taxiways, platform and roads at Cancún Airport and c) installation of a new system to screen checked baggage in an expanded section of the airport, expansion of the platform commercial runways and taxiways at Huatulco Airport. The consolidated expense for amortization of intangibles related to concessions were Ps.1,694,252, Ps.1,750,239 and Ps.1,820,239 in 2018, 2019 and 2020 and has been charged to the cost of aeronautical and non-aeronautical services, this amount includes the amortization of commercial rights of Ps.179,199 Ps.172,020 and Ps.181,545 for 2018, 2019 and 2020 respectively, recognized by the valuation of its investment in accordance with IFRS 3 “Business combinations”, and the amortization of the intangible assets of Airplan for Ps.100,479, Ps.96,455 and Ps.101,795 for 2018, 2019 and 2020, respectively. The amortization expense of the Mexican concession by Ps.656,428 in 2018, Ps.664,267 in 2019 and Ps.686,460 in 2020 has been charged to the cost of the aeronautical and non-aeronautical services. The amortization expense of the Aerostar concessions by Ps.406,261 in 2018, Ps.433,328 in 2019 and Ps.492,505 in 2020 has been charged to the cost of aeronautical and non-aeronautical services. The amortization expense of the Airplan concessions by Ps.351,885 in 2018, Ps.384,169 in 2019 and Ps.357,934 in 2020 has been charged to the cost of aeronautical and non-aeronautical services. The expense for amortizing licenses and ODC by Ps.22,191 in 2018, Ps.20,374 in 2019 and Ps.29,632 in 2020 has been charged to administrative expenses. 8.1) Impairment testing of goodwill The Company reviews the performance of business in the countries where its subsidiaries operate, considering three CGUs per country of operation. Airport operations were affected in 2020 due to COVID-19, which led to a decrease in passenger traffic. This situation led to the closure of terminals at Airplan-operated aiports from the last week of March, 2020 until the third week of September, 2020. In the case of Mexico, Terminals 2 and 3 at Cancún International Airport were temporarily closed on April 11 and 18, 2020, respectively, and were reopened on July 14 and October 1, 2020 respectively. These events are indicators of impairment and the Company performed impairment testing, first on September 30, 2020 and subsequently on December 31, 2020, for each of the three CGUs identified by the Company. From the testing, no impairment in the intangible assets of the company including goodwill was recorded. For fiscal year 2020, the Company carried out impairment testing on all CGUs considering the entire value of intangible assets, airport concessions and goodwill for Ps.52,182,311. Goodwill is assigned to the operating segments that are expected to benefit from the synergies of the business combination, regardless of whether other assets or liabilities of the acquired entities are assigned. The following is a summary of the allocation of goodwill for each operating segment: December 31, 2019 2020 Aerostar Ps. 1,057,651 Ps. 1,057,651 Airplan 1,509,714 1,509,714 Ps. 2,567,365 Ps. 2,567,365 Methodology: Pursuant to IAS 36 methods applied to the 2020 calculation, Management determines the recoverable value by the fair value less costs of disposal. The Company used this method for all its CGUs. To determine the fair value less costs of disposal the discounted cash flow projections approved by management are used covering a period of 28 years for Mexico, 32 years for Aerostar and 12 years for Airplan, which correspond to the remaining years of the airport concessions. For fiscal year 2019, the Company determined the recoverable value of each CGU on the basis of the value in use for the annual impairment testing of goodwill. In 2020, the Company changed its valuation technique used for estimating the recoverable amount, from the traditional approach that uses a single cash flow scenario, to the expected cash flow approach that uses several scenarios of probability-weighted cash flows. The change in the valuation technique is due to a significant degree of uncertainty in the estimate and a wider range of possible cash flows projections after the impact of COVID-19. This approach uses several cash flow projections considering the assumed probabilities of different events and/or scenarios instead of a single cash flow scenario. Although there may be several scenarios and probabilities, the Company considered that the three scenarios detailed below (base, positive and negative) reflect a representative sample of possible outcomes. The calculations use cash flow projections that are based on financial budgets and business plans prepared by management and approved by the board of directors. Budgets and business plans are updated to reflect the latest developments as of the reporting date. Management's expectations reflect performance to date and are based on its experience in times of recession and are consistent with the assumptions that a market participant would make. The calculations are supported by studies carried out by independent third parties specialized in the aeronautical industry in conjunction with studies published by the International Civil Aviation Organization (ICAO). These studies contemplate the economic impacts of COVID-19 and present different recovery curve scenarios for each CGU. Due to the specific circumstances of each market in which the Company operates, the following scenarios were considered appropriate: Positive - To construct a positive scenario of each CGU, a significant smooth recovery of passenger traffic was considered, that is, management increased within these scenarios a percentage applied to passenger traffic in each of the remaining years of each concession: in the case of Airplan and Aerostar it was 10% on the number of passengers of the base scenario, while 5% was considered in the CGU of Mexico owing to different qualitative factors as vaccination plans developed over time, as well as repressed passenger demand. In addition, these percentages allocated to each CGU reflect in each of them a positive recovery aligned with optimistic recovery forecast by ICAO. Consequently, under this scenario, management expects a recovery of passengers and profits in a shorter period of years. Base - To construct the base scenario of each CGU, current effects on the industry impacting each CGU were considered as well as the recovery and growth obtained from the studies performed by management through specialized third parties of the industry. Negative - To construct the negative scenario for each CGU, a slower recovery in passenger traffic was considered, that is, management reduced the base scenario by a percentage applied to passenger traffic in each of the remaining years of the concession. For Airplan and Aerostar, it was -10%, while for the CGU of Mexico it amounted to -5%, owing to different qualitative factors, such as existing or new restrictions to travel, late vaccination processes against COVID-19. In addition, these percentages allocated to each CGU reflect in each of them a slower recovery that is aligned with pessimistic recovery forecast by ICAO. Consequently, within this scenario management expects a recovery of passengers and profits over a longer period of years. The expected probability-weighted cash flow determined by the Company resulted from allocating a probability to the 3 above-mentioned scenarios. The Company estimated a 25% weighing to the negative scenario, 65% to the base scenario and 10% to the positive scenario. No impairment was recorded in any of the CGUs under any of these 3 scenarios or under that of expected probability-weighted cash flows. The assumptions used to estimate the recoverable amount are consistent with assumptions made by a market participant. For each CGU, the key assumptions for the base scenario were the following during 2019 and 2020: 2019 Airplan Aerostar Discount rate 9.66 % 9.60 % Operating costs and expenses annual average 5.25 % 4.45 % Departing passenger growth rate 6.70 % 2.50 % 2020 Mexico Airplan Aerostar Discount rate 12.20 % 6.92 % 9.54 % Operating costs and expenses annual average 3.00 % 3.00 % 3.00 % Passenger growth rate in the recovery period of each CGU. 34.80 % 52.16 % 19.37 % Recovery period (years) 5 3 5 Average growth rate of passengers in the period after the recovery of passengers for each CGU 2.30 % 4.90 % 1.70 % Hierarchy level of the fair value of the recoverable of the CGU 3 3 3 Management has determined the values assigned to each of the above key assumptions as follows: 2019 Assumption Approach used to determine values Discount rates It reflects specific risks relating to industry market rates and countries where they operate. Annual average growth of revenue, as well as operating costs and expenses. Weighted average growth rate during the concession period, which is based on the historical and projected inflation trends. Growth rate for departing passengers Weighted average growth rate of departing passengers during the concession period aligned with financial and operating growth. 2020 Assumption Approach used to determine values Discount rates The after-tax discount rates were used from information of listed companies of the industry where each CGU operates. Growth rate for operating costs and expenses. Growth rate during the concession period, which is based on the latest period and projected inflation trends. Growth rate of passengers (during the recovery period of each CGU). Weighted average growth rate of departing passengers during the recovery period aligned with industry growth. Growth rate of departing passengers (after the recovery period of each CGU). Weighted average growth rate of departing passengers during the concession period aligned with operating and financial growth under a recovered economic environment in terms of passenger traffic. Below is the sensitivity of the discount rates applied to projections of each CGU subject to annual impairment testing for fiscal year 2019. CGU Aerostar: If the discount rate applied to the cash flow projections of this CGU had been + 1% or -1% (instead of 9.60%), management's estimate would have had the following effects, an excess of the flows of cash against the carrying amount of Ps.3,937,096 and Ps.9,876,930, respectively. CGU Airplan: If the discount rate applied to the cash flow projections of this CGU had been + 1% or -1% (instead of 9.66)%, Management's estimate would have had the following effects, an excess of the flows of cash against the carrying amount of Ps.615,993 and Ps.1,102,280, respectively. For the year 2020, sensitivity analyses were applied to projections of each CGU as shown below. Taking the base scenario and applying a sensitivity analysis to the discount rate by +1% or -1% in each CGU, cash flow projections would have generated an effect of an excess of Ps.8,375,900 and Ps.18,213,261, respectively in Mexico, $563,239 and Ps.4,995,314 in Aerostar, respectively, and Ps.1,273,721 and Ps.1,857,402 in Airplan, respectively. When making a sensitivity analysis on the discount rate of the expected probability-weighted cash flow, there are no significant variations compared with the base scenario. Further, if the variables of the three scenarios remain constant, including the discount rate, and after the sensitivity analysis performed by the Company on the weighing allocated to each scenario, even considering the negative scenario at 100%, no impairment would be recorded in any of the CGUs. 8.2) Basic terms and conditions of the concessions Mexico: The basic terms and conditions of each concession are the following: a. The concession holder must undertake the construction, improvement and maintenance of the facilities in accordance with its Master Development Plan (MDP) and is required to update the plan every five years. See Note 15.b. b. The concession holder may only use the airport facilities for the purposes specified in the concession and must provide services in accordance with all applicable laws and regulations, and is subject to statutory oversight by the SCT. The concession holder shall pay a DUAC (currently 5% of the gross income of the concession holder, resulting from the use of public assets in accordance with the terms of the concessions) as required by the applicable law. DUAC is presented in the consolidated statement of income under “Cost of aeronautical services”. See Note 4. c. Fuel services and fuel supply are to be provided by the Mexican Airport and Auxiliary Services Agency, a Decentralized Public Entity. d. The concession holder must grant access to and the use of specific areas of the airport to government agencies to perform their activities inside the airports. e. The concession may be terminated if the concession holder fails to comply with certain of the obligations imposed by the concession as established in Article 27 or for the reasons specified in Article 26 of the Airport Law. f. Revenues resulting from the concession are regulated and subject to a review process. See Note 18.1.3. g. The terms and conditions of the regulations governing the operations of the Company may be modified by the SCT. Aerostar: The purpose of the Aerostar concession (Agreement) is to operate the public airport safely by maintaining the highest possible levels of safety and protection at the LMM Airport, and promoting, facilitating and improving commerce, tourism and economic development. The Puerto Rico authorities, Aerostar and the other airlines have agreed to the terms and conditions of the LMM Airport Facility Contract. The concession period is 40 years as of the closing of the agreement assigning the Airport’s operating rights (February 27, 2013). Under the Agreement, Aerostar has no rights to control in full the use of the Airport facilities, for example, airport facilities that are under the supervision of the Authority or internal or external security in certain areas and it is required to provide certain maintenance services within the airport. As part of the Agreement, the authorities granted Aerostar the right to sublease the LMM Airport non-aeronautical areas and to collect and retain the fees, charges and payments and income arising from all subleased facilities. According to the provisions of the Agreement, the Company has the right to collect the annual contributions of all airlines, which will be equal to the sum of the: a) platform use fees; b) landing fees; c) other leases, and d) international and domestic airport use fees. The Agreement requires Aerostar to make a cash payment of USD2,500 per year for the first five years after the first five years, the authority establishes a payment of “Annual Authority Income Share”, consisting of 5 % of the gross revenues of the airport obtained by Aerostar from the sixth year to the thirtieth year. From year 31 to 40, this amount will increase to 10% of the airport’s gross revenues. Airplan: The object of the concession contract 8000011-0K is the granting by the Special Administrative Unit of Civil Aeronautics of Colombia in favor of Airplan of a concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the airports Antonio Roldán Betancourt, El Caraño, José María Córdova, Las Brujas and Los Garzones, and the granting by Enrique Olaya Herrera Airport - AIH in favor of the concessionaire of the concession for the administration, commercial operation, adaptation, modernization and maintenance of Enrique Olaya Herrera Airport. The term of execution of the contract extends from the date of signing of the act of commencement of execution and until the date on which one of any of the following events occurs: · The regulated revenues generated are equal to the expected regulated revenues, provided that the concession agreement has been in force for at least 24 years. · The concession agreement has been in force for at least 40 years, regardless of whether the regulated revenues generated are equal to the expected revenues. · If the regulated revenues generated by the Colombian airports are equal to the expected revenues before the end of the 24-year period, the concession agreement will remain in effect until the end of such period. For purposes of the regulated revenue expected as defined in the concession contract, it must be taken into consideration that the expected regulated revenue will increase once each of the complementary works (mandatory or voluntary) is delivered to the grantor. The grantors agree to assign the regulated and unregulated revenues corresponding to each of the airports to Airplan. The concessionaire will obtain all of its remuneration for the concession from the assignment of the regulated revenues and the unregulated revenues that the grantors make in their favor. The concessionaire is obliged, with the grantor to pay, during the term of the contract, a consideration equivalent to 19% of the gross income of the concessionaire. The concession granted by virtue of this contract imposes on the concessionaire the general obligation to administer, make commercial use and operate the airports in accordance with the minimum specifications set forth in the contract and at their own risk. The determination of the economic useful life of the intangible asset is subject to the percentage of execution of the revenues with respect to the total expected income in the Company's financial model. Fiduciaria Bancolombia Contract: In accordance with the requirements of the concession agreement, on June 25, 2008, Airplan constituted a trust and entered into a trust agreement with Fiduciaria Bancolombia making that institution the trustee. The trust was constituted to administer the concession’s resources and to oversee the payment of the concession’s obligations by the concessionaire. Airplan transfers all of the gross income it receives and all of the debt and capital resources it obtains from the administration of the concession to the trust. The trustee maintains, in accordance with current accounting standards, a record of each and every one of the payments and transfers that are made to third parties or to the concessionaire itself, making the appropriate charges to the trust’s accounts. The foregoing is without prejudice to the assignment of regulated revenues and non-regulated revenues to the concessionaire and not the trust. The debt and capital resources obtained by the concessionaire are recorded in the concessionaire’s own accounts and only kept for record purposes in the trust because the trust is constituted for purposes of administering such resources. The constitution of the trust was made through the execution of an irrevocable mercantile trust and administration contract whose term is the maximum term authorized by the Colombian Commercial Code. 8.3) Subsequent measurement of the intangible asset The Company will subsequently measure the intangible asset over its economic useful life at cost, less accumulated amortization and impairment loss.

Accounts payable and accrued ex

Accounts payable and accrued expenses:	12 Months Ended
	Dec. 31, 2020
Accounts payable and accrued expenses:
Accounts payable and accrued expenses:	Note 9 - Accounts payable and accrued expenses: At December 31, 2019 and 2020, the balances are as follows: December 31, 2019 2020 Suppliers Ps. 245,100 Ps. 353,885 Taxes payable 175,573 57,174 Use rights of assets under concession 269,916 5,070 Accounts payable to related parties (Note 14.1) 97,312 53,256 Lease payable (Note 7.1) 20,422 17,236 Salaries payable 149,452 128,105 Sundry creditors for services provided 803,746 640,068 Accounts payable to contractors 37,809 343,610 Total Ps. 1,799,330 Ps. 1,598,404 Since these accounts mature at a term of under one year, their fair value is considered to approximate their book value.

Bank loans_

Bank loans:	12 Months Ended
	Dec. 31, 2020
Bank loans:
Bank loans	Note 10 - Bank loans: At December 31, 2019, the Company has used the total amount of these credits as shown below: Credit line balance Credit line Principal Commissions and Term Fair Bank at 12/31/2019 used in pesos amortization interests - Net Short Long value (*) Santander, S.A. Ps. 2,000,000 Ps. (7,933) Ps. 1,992,067 Ps. 2,044,664 BBVA Bancomer, S. A. 2,000,000 401 Ps. 23,998 1,976,403 2,045,386 Total México Ps. 4,000,000 Ps. (7,532) Ps. 23,998 Ps. 3,968,470 Ps. 4,090,050 Bancolombia, S.A. COP 137,250,000 Ps. 1,041,415 Ps. (51,834) Ps. 6,474 Ps. 73,067 Ps. 922,987 Ps. 894,131 Corpbanca Colombia, S.A. 93,330,000 708,472 (35,247) 5,503 49,657 629,071 608,009 Banco Davivienda, S.A. 82,349,995 624,983 (31,101) 4,332 43,799 554,416 536,479 Banco de Bogotá, S.A. 33,854,211 256,744 (12,786) 1,106 18,014 227,049 220,552 Banco de Occidente, S.A. 33,854,228 256,742 (12,786) 1,098 18,014 227,040 220,552 Banco Popular, S.A. 7,319,029 55,309 (2,765) (348) 4,023 48,174 47,687 Banco AV Villas, S.A. 7,320,000 55,566 (2,764) 432 3,895 49,339 47,687 Servicios Financieros, S.A. 7,320,000 55,315 (2,764) (612) 3,768 48,171 47,687 Total Airplan COP 402,597,463 Ps. 3,054,546 Ps. (152,047) Ps. 17,985 Ps. 214,237 Ps. 2,706,247 Ps. 2,622,784 Ps. 7,054,546 Ps. (152,047) Ps. 10,453 Ps. 238,235 Ps. 6,674,717 Ps. 6,712,834 At December 31, 2020, the Company has used the total amount of these credit lines as shown below: Credit line balance Credit line Principal Commissions and Term Fair Bank at 12/31/2020 used in pesos amortization interests - Net Short Long value(*) Santander, S. A. Ps. 2,000,000 Ps. (5,133) Ps. 1,994,867 Ps. 1,989,862 BBVA Bancomer, S. A. 1,980,000 Ps. (20,000) 16,343 Ps. 322,209 1,654,134 1,957,415 Total México — Ps. 3,980,000 Ps. (20,000) Ps. 11,210 Ps. 322,209 Ps. 3,649,001 Ps. 3,947,277 Banco Popular de Puerto Rico USD 10,000 Ps. 199,087 Ps. 15 Ps. 199,102 Ps. 199,188 Bancolombia, S. A. COP 125,250,000 984,985 (69,959) 9,410 81,758 842,678 752,072 Corpbanca Colombia, S. A. 85,170,000 670,111 (47,572) 7,511 55,565 574,485 511,409 Banco Davivienda, S. A. 75,149,985 591,130 (41,975) 6,098 49,012 506,241 451,243 Banco de Bogotá, S. A. 30,894,211 242,820 (17,256) 1,893 20,227 207,230 185,511 Banco de Occidente, S. A. 30,894,228 242,818 (17,256) 1,758 20,100 207,220 185,511 Banco Popular, S. A. 6,679,029 52,292 (3,731) (213) 4,475 43,873 40,110 Banco AV Villas, S. A. 6,680,000 52,558 (3,731) 589 4,358 45,058 40,110 Servicios Financieros, S. A. 6,680,000 52,297 (3,731) (467) 4,230 43,869 40,110 Bancolombia, S. A. 8,128,400 67,697 (20,309) 91 47,479 — 47,957 Total Airplan COP 375,525,853 Ps. 2,956,708 Ps. (225,520) Ps. 26,670 Ps. 287,204 Ps. 2,470,654 Ps. 2,254,033 Ps. 7,135,795 Ps. (245,520) Ps. 37,895 Ps. 808,515 Ps. 6,119,655 Ps. 6,400,498 (*) The following variables were used to determine the fair values of the loans at December 31, 2019 and 2020. As a result of the business combination in Airplan on October 19, 2017, a fair value of the syndicated loan, valued at its amortized cost, was determined, increasing its value by Ps. 605,382. The debt contracted in the original currency (the Colombian peso) plus this adjustment to fair value will result in COP535,125,402 (Ps.3,408,442). Mexico: 2019: · TIIE28 Discount Rate as of December 31, 2019. · Probability of default of ASUR as of December 31, 2019. · Default Swaps (CDS) of Mexico as of December 31, 2019. 2020: · TIIE28 Discount Rate as of December 31, 2020. · Probability of default of ASUR as of December 31, 2020. · Default Swaps (CDS) of Mexico as of December 31, 2020. Airplan: 2019: · Reference Discount Rate in Colombia as of December 31, 2019. · Probability of default of ASUR as of December 31, 2019. · Credit Default Swaps (CDS) of Colombia as of December 31, 2019. 2020: · Reference Discount Rate in Colombia as of December 31, 2020. · Probability of default of ASUR as of December 31, 2020. · Credit Default Swaps (CDS) of Colombia as of December 31, 2020. Aerostar: 2020: · Yield to Maturity through the BB-rating curve by industrial sector at December 31, 2020. Level 2 of fair value hierarchy at December 31, 2019 and 2020, respectively. Methodology: The following methodology was used to determine fair value in the terms of IFRS 13: The valuation technique used, which is recognized in the financial environment, was estimated future cash flows discounted at their present value using market information available at the valuation date. Mexico: In October 2017, the Company acquired a new loan with BBVA Bancomer of Ps.2,000,000, with a term of seven years, which will be amortized in nine semiannual payments from October 2020 to October 2024 at the TIIE rate of 28 days plus 1.25 points. On that same date, the Company acquired a loan with Banco Santander of Ps.2,000,000. The loan has a term of five years, maturing on October 27, 2022 at the TIIE rate of 28 days plus 1.25 points. In terms of the credits in pesos granted by BBVA Bancomer, the Company is obliged to maintain a consolidated leverage level not exceeding 3.5x calculated as a total financial debt between the (operating profit calculated before taxes, interest expenses, plus depreciation plus amortization at consolidated level) EBITDA for the twelve months prior to the end of each quarter and a minimum interest coverage of 3.0x, calculated as EBITDA between the financial expenses associated with the total financial debt for the 12 months before the end of each quarter. During 2020 the Company fulfilled these financial obligations, on each quarterly measurement date. At December 31, 2020, the Consolidated Leverage Ratio calculated under the contract was 2.7x, which does not exceed the 3.5x established. In turn, the Debt Coverage Ratio at December 31, 2020 was 5.2x covering the minimum required of 3.0x as stated in the contract. In terms of the credit in pesos granted by Santander, the Company is obliged to maintain a leverage level on the last day of each fiscal quarter of no more than 3.5x and a minimum interest coverage ratio of 3.0x, both reasons calculated by the 12 months before each quarter. The calculation for the Leverage Ratio and Interest Coverage Ratio will be performed considering the Company’s share in the income/loss of its subsidiaries and other companies in which it holds interest. During the year the Company fulfilled these financial obligations, on each quarterly measurement date. At December 31, 2020, the Leverage Ratio calculated under the contract was 2.4x, which does not exceed the 3.5x set. In turn, the Debt Coverage Ratio at December 31, 2010 was 5.8x covering the minimum required of 3.0x as stated in the contract. The Company must refrain from creating, incurring, assuming or generating the existence of any lien on its assets, assets and rights, as well as refraining from assuming obligations of third-party accounts, becoming jointly bound or granting a type of personal real guarantee or fiduciary to guarantee its own or third party obligations that are relevant or may have a significant adverse effect on the payment of the credit. During the year the Company fulfilled these financial obligations. On June 29, 2020, the Company entered into a line of credit with BBVA Bancomer for Ps.1,500,000, for a term of eighteen months counted as from that date, thus falling due on December 29, 2021. The loan is subject to 28-Day Interbank Equilibrium Interest Rate (28 Day TIIE) plus 1.5%. Funds arising from this line of credit may be used for general corporate purposes, expenses and commissions relating to the loan. As of December 31, 2020, the Company has not used the funds arising from the credit line. Airplan: On June 1, 2015, the Company incurred a new long-term syndicated loan of COP440,000,000 Colombian pesos (Ps.2,897,404) payable in 2027 with a three-year grace period for the payment of principal. The participants of this syndicated loan are: Amount Entity (COP) Bancolombia, S. A. COP. 150,000,000 Corpbanca Colombia, S. A. 102,000,000 Banco Davivienda, S. A. 90,000,000 Banco de Bogotá, S. A. 37,000,000 Banco de Occidente, S. A. 37,000,000 Banco Popular, S. A. 8,000,000 Banco AV Villas, S. A. 8,000,000 Servicios Financieros, S. A. 8,000,000 COP. 440,000,000 Financial obligations Airplan is obligated throughout the term of the credit to comply with the following financial commitments: Maintain long-term financial indebtedness limited to this syndicated loan operation: This consists of the sum of the balances payable by the debtor during the term of the syndicated loan, as a result of long- and short-term financial indebtedness, the amount of which may not exceed the sum of COP440,000,000 (Ps.2,897,404). On September 11, 2020, the Company obtained a short-term loan from Bancolombia amounting to COP11,612,000 (Ps.67,041), for ten months at a DTF rate plus 1.7%, with monthly principal amortization and interest payment at an effective rate of 4.43%. Maintain the capital structure: This addresses the relationship between capital and debt that the debtor must meet in relation to the project throughout the term of the loan, in such a way that the result of the financial indicator Capital 1 (Capital + debt) is equal to or higher than 16%. Maintain the index of debt coverage: This refers to the indicator that the debtor must maintain during the entire term of the loan, defined as: EBITDA - Taxes / Debt service 2: 1.2. Airplan failed to comply with its obligation related to the Debt Coverage Ratio at September 30 and December 31, 2020. Airplan, obtained from all participating banking institutions of the syndicated loan, in August 2020 a waiver for the breach of the obligation referring to the indicator of the debt coverage index covering the measurement date of September 30, December 31, 2020 and until the measurement date of the first quarter March 31, 2021. In accordance with Company's projections, noncompliance with the obligation is expected for 2021. Therefore, as of the date of these Consolidated Financial Statements, the banking institutions involved in the syndicated loan exempted the Company from compliance with the Debt Coverage Ratio until the measurement date for the first quarter of 2022. These waivers do not represent expenses or penalties to the entity. With the waivers described above, the Company has coverage for a possible noncompliance and is exempted from any penalties or negative effect in case of noncompliance with the Debt Coverage Ratio until the measurement date of March 31, 2022. Aerostar On April 1, 2020, the Company drew down its revolving credit line with Banco Popular de Puerto Rico, approved as of December 18, 2015, for USD10,000 (approximately Ps.239,200) and, through an amendment dated October 22, 2018 the Company received an extension for a maximum term of three years falling due on December 18, 2021, at a Prime or Fed Funds Rate less 0.50%, and whose prepayment can be made at any moment. The resources of this credit line can be used for working capital purposes and for investment projects. During the term of the loan, Aerostar is financially obliged to keep a Debt Coverage Ratio higher than 1.0x on the measurement date of each quarterly closing. At December 31, 2020, the Debt Coverage Ratio was 3.1x. On December 30, 2020, Aerostar obtained an unsecured revolving credit line with Banco Popular de Puerto Rico for USD20,000 (approximately Ps.399,010), for a term of three years and the possibility of making prepayments at any moment during the term of the contract, with interest at Prime rate plus 0.50%. The Company will pay 0.15% for unused credit line, which will be calculated on the average amount of unused principal during the year. To date, the Company has not used the credit line.

Long-term debt_

Long-term debt:	12 Months Ended
	Dec. 31, 2020
Long-term debt:
Long-term debt:	Note 11 — Long-term debt: As a result of including Aerostar in the consolidation, as from May 31, 2017, the following long-term debt is recorded. To finance a portion of the agreement payment to the Puerto Rico Authority, and certain other costs and expenditures associated with it, Aerostar entered into a Note Purchase Agreement in March 22, 2013 where Aerostar authorized the issue of subordinated bonds and sale of an aggregate principal of Ps.4,471,000 (USD350,000) of its 5.75% senior secured notes due on March 22, 2035 in accordance with the following conditions: Performance 2.39 % Spread credit (bps) +336 Coupon 5.75 % On June 24, 2015, Aerostar signed an agreement for private placement of bonds in the amount of Ps.737,000 (USD50,000), maturing on March 22, 2035, based on the following conditions: Performance 6.75 % At December 31, 2019 the integration of the debt is shown as follows: Credit line Interest Credit line Interest Term Fair used in thousand USD in USD in pesos in pesos Short Long value Loan $ 400,000 $ 10,152 Ps. 6,843,134 Ps. (43,193) Ps. 311,372 Ps. 6,488,569 Ps. 7,082,022 At December 31, 2020 the integration of the debt is shown as follows: Credit line Interest Credit line Interest Term Fair used in thousand USD in USD in pesos in pesos Short Long value Loan $ 400,000 $ 10,577 Ps. 7,011,281 Ps. (39,105) Ps. 330,235 Ps. 6,641,941 Ps. 7,697,476 Inputs: 2019: Corporate risk through Yield to Maturity of comparable bonds of the “Transportations and Logistics” sector. Level 2 of fair value hierarchy 2020: Corporate risk through Yield to Maturity of comparable bonds of the “Transportations and Logistics” sector at December 31, 2020. Level 2 of fair value hierarchy Methodology: The following methodology was used to determine fair value in the terms of IFRS 13 the valuation technique used is one recognized in the financial environment (estimated future cash flows discounted at their present value) using market information available at the valuation date.

Stockholders' equity_

Stockholders' equity:	12 Months Ended
	Dec. 31, 2020
Stockholders' equity:
Stockholders' equity:	Note 12 - Stockholders’ equity: At December 31, 2019 and 2020, the minimum fixed capital with no withdrawal rights is of Ps.1,000 and the variable portion is of Ps.7,766,276, (nominal figure) comprised of 300,000,000 common, nominative Class I shares no par value, wholly subscribed and paid in. The variable portion of capital stock is comprised of Class II common, nominative shares. At December 31, 2019 and 2020 no Class II shares have been issued. Both classes of shares will have the characteristics determined at the Shareholders’ meeting where issuance is approved and they are integrated as shown as follows: Capital stock as of Total shares December 31, Description 2019 2020 2019 2020 “B” Series 277,050,000 277,050,000 Ps. 7,173,079 Ps. 7,173,079 “BB” Series 22,950,000 22,950,000 594,197 594,197 Total 300,000,000 300,000,000 Ps. 7,767,276 Ps. 7,767,276 All ordinary shares confer the same rights and obligations on the holders of each series of shares. Series BB shares have voting shares and other rights, such as the right to elect two members of the Board of Directors, and Series B shareholders are entitled to appoint the remaining members of the Board of Directors. Series BB may not represent more than 15% of the Company’s capital stock. Legal reserve The Company is legally required to allocate at least 5% of its unconsolidated annual net income to a legal reserve fund. This allocation must continue until the reserve is equal to 20% of the issued and outstanding capital stock of the Company. Mexican corporations may only pay dividends on retained earnings after the reserve fund for the year has been set up. Reserve for acquisition of shares The reserve for acquisition of shares represents the reservation authorized by the stockholders for the Company to purchase its own shares subject to certain criteria set forth in the bylaws and the Securities Market Law. At December 31, 2019 and 2020, the reserve for repurchase of shares totals Ps.11,554,572. Dividends At the April 26, 2018 General Ordinary Stockholders’ meeting, the Company’s stockholders agreed to pay net dividends of Ps.2,034,000 (nominal), which don’t gave rise to IT because the dividends were paid from the CUFIN. At the April 24, 2019 General Ordinary Stockholders’ meeting, the Company’s stockholders agreed to pay net dividends of Ps.3,000,000 (nominal), which don’t gave rise to IT because the dividends were paid from the CUFIN. At the Ordinary General Stockholders' Meeting held on April 23, 2020, the Company’s Stockholders agreed to delegate the power to decree and pay an ordinary dividend for Ps.2,463,000 (nominal) to the Administrative Board, which will not accrue Income Tax as they arise from the CUFIN (Net Tax Income Account). In case of approval, the dividend would be paid in accordance with the decree of the Board as from May 11, 2021. At December 31, 2020 and at the date of these Financial Statements, the Board of Directors has neither decreed nor paid these dividends. Dividends are tax free if paid from the CUFIN. Dividends paid in excess of the CUFIN balances are subject to tax equivalent to 42.86%. Tax due is payable by the Company and may be credited against income tax for the year or income tax for the two immediately following fiscal years. Dividends paid from previously taxed earnings are not subject to tax withholding or payment. Dividends paid that come from profits previously taxed by the ISR will not be subject to any withholding or additional tax payment. The Income Tax Law (LISR or ITL) establishes the obligation to maintain the CUFIN with the profits generated until December 31, 2013 and start another CUFIN with the profits generated as of January 1, 2014. At December 31, 2019 and 2020, the companies CUFIN lump sum is Ps.12,900,414 and Ps.14,759,918, respectively, whereas the combined contribution capital account amounts Ps.42,825,290 and Ps.45,258,134, respectively. In the event of a capital reduction, any excess of stockholders’ equity over paid-in capital contribution account balances is accorded the same tax treatment as dividends, in accordance with the procedures provided for in the Income Tax Law. Retained earnings Substantially, all consolidated Company earnings were generated by its subsidiaries. Retained earnings can be distributed to the Company’s shareholders to the extent that the subsidiaries have distributed earnings to the Company.

Income tax incurred and deferre

Income tax incurred and deferred:	12 Months Ended
	Dec. 31, 2020
Income tax incurred and deferred:
Income tax incurred and deferred:	Note 13 - Income tax incurred and deferred: The Company does not consolidate its results for tax purposes. a. Income Tax (IT) Mexico: In 2018, 2019 and 2020, the Company determined tax profits in its subsidiaries in the amounts of Ps.5,984,043 , Ps.6,119,361 and Ps.2,163,740, respectively. In 2018, 2019 and 2020, the tax profits were partially offset with the amortization of tax losses in the amounts of Ps.41,977, Ps.36,613 and Ps.3,196, respectively. The subsidiaries that at December 31, 2018, 2019 and 2020, have not assessed IT due to the tax loss carryforwards, are Cozumel, Minatitlán and Tapachula. Taxable income differs from the book income due to temporary and permanent differences arising from the different bases for the recognition of the effects of inflation for tax purposes and from the permanent effects of items affecting only the book or tax results. The ITL establishes for 2014 and subsequent years an income tax rate of 30%. The Company has performed the evaluation of the Preferential Tax Regimes and has determined that this year it is not applicable because it does carry out a business activity, in the case of the investment in the airport of Puerto Rico, and that passive income does not represent more than 20% of its total income. Aerostar: The Company determined tax profit for Ps.42,770 and tax loss for Ps.660,4040 in 2019 and 2020 respectively, derived from the agreement with the Department of the Treasury of Puerto Rico in which its operations are subject to income taxes of Puerto Rico of 10% under the provisions of Section 12 (a) of the Public Private Partnership Law (Law) enacted in June 2009. Derived from the analysis carried out by the Administration, it is considered that there are no impacts due to changes in the legislation of the United States of America made since the 2019 fiscal year. Airplan: The Company determined taxable income (liquid income) in accordance with the tax law of Colombia for the fiscal year, 2019 and 2020 of Ps.325,349 and Ps.9,133, respectively. The Company is subject to income taxes in Colombia of 33% in 2018, 2019 and 32% in 2020 and plus a 6% surcharge on liquid income less COP800,000 in 2018. The company determined an income tax of Ps.31,298 in 2018, Ps.107,365 in 2019 and Ps.2,916 in 2020, respectively. According to Article 188, for income tax purposes, it is assumed that the taxpayer's net income is not less than 3.5% of his net worth, on the last day of the immediately preceding taxable year. The percentage of presumptive income referred to in this article will be reduced to 0.5% in taxable year 2020; and reduced to 0%, as of taxable year 2021. Law 1739 of December 23, 2014 in force, establishes the determination and payment of a surcharge on income tax for equity - CREE, which is the responsibility of the taxpayers of this tax and applies to a taxable base higher than the COP800,000, which is equivalent to 6%. That over rate was repealed to from the year 2018. Tax Reform Law No. 1943, dated December 28, 2018, sets forth the following rates applicable to corporate taxable income: 33% for fiscal years 2018 and 2019, 32% for fiscal year 2020, 31% for fiscal year 2021, and 30% as from fiscal year 2022.Over the fiscal taxable income. The IT provision at December 31, 2018, 2019 and 2020 is as follows: December 31, 2018 2019 2020 Mexico: Current IT Ps. 1,766,083 Ps. 1,864,384 Ps. 631,471 Deferred IT 13,116 57,023 117,924 IT provision Mexico Ps. 1,779,199 Ps. 1,921,407 Ps. 749,395 Aerostar: Current Income Tax 433 (16) Deferred Income Tax 33,879 38,146 42,546 IT provision Aerostar Ps. 33,879 Ps. 38,579 Ps. 42,530 Airplan: Current IT (20,098) 110,910 2,916 Deferred IT 2,981 (92,794) (65,686) IT provision Airplan Ps. (17,117) Ps. 18,116 Ps. (62,770) Total IT provision Ps. 1,795,961 Ps. 1,978,102 Ps. 729,155 The reconciliation between the statutory and effective IT rates is shown as follows: December 31, 2018 2019 2020 Consolidated income before provision for IT Ps. 6,916,699 Ps. 7,661,741 Ps. 2,855,692 Plus (less): Net (loss) income before taxes of Airplan and Aerostar (297,179) (843,352) (65,672) Net (loss) income before taxes of subsidiaries in Mexico not subject to IT (89,685) (100,793) 4,337 Income before provisions for income taxes 6,529,835 6,717,596 2,794,357 Statutory IT rate 30 % 30 % 30 % IT that would result from applying the IT rate to book profit before income taxes 1,958,951 2,015,279 838,307 Non-deductible items and other permanent differences 15,126 11,941 10,496 Annual adjustment for tax inflation 12,101 (12,783) (18,958) Accounting disconnect inflation (189,237) (93,030) (80,450) Effect by difference in rate of IT Aerostar 33,879 38,579 42,530 Effect by difference in rate of IT Airplan (17,117) 18,116 (62,770) Other non-taxable earnings (17,742) — — IT provision Ps. 1,795,961 Ps. 1,978,102 Ps. 729,155 Effective IT rate 28 % 29 % 26 % Following are the principal temporary differences with respect to deferred tax: Period ended on December 31, 2019 2020 Deferred income tax asset: Temporary liabilities Ps. 48,079 Ps. 31,019 Fair value of long-term debt 175,137 162,574 Allowance for doubtful accounts 34,296 66,609 257,512 260,202 Deferred income tax payable: Fixed and intangible assets (*) (2,974,108) (3,198,632) Temporary assets (287,172) (226,106) Amortization of expenses (816) (609) (3,262,096) (3,425,347) Deferred income tax liability - Net Ps. (3,004,584) Ps. (3,165,145) (*) Includes Ps.942,519 and Ps.1,032,799 from Aerostar from the periods 2019 and 2020, and Ps.695,212 and Ps.647,571 from Airplan in 2019 and 2020. The net movements of the deferred tax asset and liability for the year are as follows: Impairment provision Foreign of loan Concession Currency portfolio Assets Conversion Others Total Balances as of December 31, 2018 Ps. (36,874) Ps. 3,079,749 Ps. 60,008 Ps. (21,215) Ps. 3,081,668 Revaluation effect by conversion Airplan and Aerostar — — (102,370) 22,911 (79,459) Consolidated income statement: Airplan 2,467 (161,556) (184) 66,479 (92,794) Aerostar 38,414 (268) 38,146 México 111 60,315 (3,403) 57,023 2,578 (62,827) (452) 63,076 2,375 Balances as of December 31, 2019 (34,296) 3,016,922 (42,814) 64,772 3,004,584 IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar — — 141,236 (75,456) 65,777 Consolidated income statement: Airplan (11,390) (73,994) (461) 20,159 (65,686) Aerostar 43,767 (1,221) — 42,546 México (20,923) 115,197 — 23,650 117,924 (32,313) 84,970 (1,682) 43,809 94,784 Balances as of December 31, 2020 Ps. (66,609) Ps. 3,101,892 Ps. 96,740 Ps. 33,125 Ps. 3,165,145 b. AT in excess of IT effectively paid until December 31, 2007, (date on which AT was repealed) is subject to refund in accordance with the procedure established in the Flat Tax Law in the following ten periods up to 10% of the total AT paid and not yet recovered, without it exceeding the difference between the IT paid in the period and the AT paid in the previous three years, whichever is lower, in accordance with the Flat Tax Law, when IT incurred is higher than AT in any of those years, and it is subject to restatement through the application of “National Consumer Price Index” Mexican factors. The last year that the AT can be recovered is 2017. During fiscal years 2019 and 2020, the Company obtained the recovery of AT for Ps.21,121 and Ps.32,017 respectively, with recognition in the results as revenue. In 2019, AT of Ps.932, was applied in the results for the period under income taxes in favor of some subsidiaries in which the tax will not be recoverable not in accordance with the procedure established in the Flat Tax Law, which establishes that the tax is recoverable gradually every year up to a maximum of 10% of the total AT paid in the 10 years prior to 2008. Recoverable taxes At December 31, 2019 and 2020, the tax credits are as of Ps.230,030 and Ps.631,999, respectively. Aerostar Tax loss Carry forwards: Aerostar had cumulative tax loss carry forwards whose right to be amortized against future taxable income expires as shown below: Year of Year of loss Amount expiration 2012 Ps. 7,085 2022 2013 37,256 2023 2014 25,545 2024 2015 28,520 2025 2016 27,745 2026 2017 22,248 2027 2018 10,600 2028 2019 1,975 2029 2020 30,725 2030 Total Ps. 191,699 Temporal differences not recognized Temporary difference related to investments in subsidiaries for which no liabilities have been recognized for deferred income tax: December 31, 2019 2020 Undistributed utilities Ps. 3,424,951 Ps. 3,200,543 Tax rate 30 % 30 % Deferred income tax liabilities unrecognized with the previous temporary differences Ps. 1,027,485 Ps. 960,163 This tax could be subject to a more thorough revision, as well as the application of tax treaties existing in the countries of origin.

Balances and transactions with

Balances and transactions with related parties:	12 Months Ended
	Dec. 31, 2020
Balances and transactions with related parties:
Balances and transactions with related parties:	Note 14 - Balances and transactions with related parties: 14.1) Balances receivable and payable At December 31, 2019 and 2020, respectively, the balances receivable from (payable to) related parties shown in the consolidated statement of financial position are comprised as follows: December 31, 2019 2020 Accounts receivable: Autobuses Golfo Pacífico, S. A. de C. V. (Shareholder/services) Ps. 284 Ps. 197 Ps. 284 Ps. 197 Accounts payable and accumulated expenses (Note 10):(*) Inversiones y Técnicas Aeroportuarias, S. A. de C. V. (Shareholder/technical assistance) Ps. (96,769) Ps. (53,257) Autobuses de Oriente ADO, S. A. de C. V. (Shareholder/technical assistance) (127) Lava Tap de Chiapas, S. A. de C. V. (Key management personnel/services) (543) (411) (97,312) (53,795) Net Ps. $ (97,028) Ps. $ (53,598) (*) These are accounts with terms of less than one year under similar market conditions. 14.2) Transactions with related parties At December 31, 2018, 2019 and 2020, the transactions shown in the next page were held with related parties, which were set at the same prices and conditions as those that would have been used in comparable operations by third parties. December 31, 2018 2019 2020 Commercial income: Autobuses de Oriente, S. A. de C. V. (Stockholder) Ps. 14,455 Ps. 14,349 Ps. 7,968 Autobuses Golfo Pacífico, S. A. de C. V. (Stockholder) 7,014 7,290 4,862 Coordinados de México de Oriente, S. A. de C. V. (Stockholder) 150 157 164 Expenses: Stockholders: Technical assistance (Note 15.4) Ps. (386,249) Ps. (404,086) Ps. (175,615) Related parties: Administrative services Leasing Ps. (5,232) Ps. (5,340) Ps. (6,061) Cleaning services (10,854) (11,544) (11,848) 14.3) Compensation of key personnel Key personnel include directors, members of the Steering Committee, and Committees. In the years ended on December 31, 2018, 2019 and 2020, the Company granted the following benefits to the key management personnel, the Steering Committee and the different Company Committees: December 31, 2018 2019 2020 Short term salaries and other benefits paid to key personnel (Note 18.17) (*) Ps. 119,202 Ps. 109,747 Ps. 137,272 Fees paid to the Board of Directors and Committees 8,695 9,146 8,571 (*) In 2018, 2019 and 2020, includes costs of Ps.53,268, Ps.41,411 and Ps.66,083; and Ps.16,350, Ps.17,381 and Ps.15,650, respectively for key personnel of directors of Aerostar and Airplan. 14.4) Technical assistance agreement With regard to the sale of series “BB” shares to ITA held in 1998, the Company signed a technical assistance agreement with ITA, whereby the latter company and its stockholders agreed to provide management and consulting services and transfer knowledge and experience in the industry and technology to the Company in exchange for compensation. The agreement is for an initial term of 15 years and renews automatically for subsequent five year periods, unless one of the parts issues the other a cancellation notice within a determined term prior to the programmed expiration date. The Company can only exercise its termination right through a resolution of the shareholders. ITA began to provide its services under said contract on April 19, 1999. In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2,000 (approximately Ps.37,700). The minimum fixed amount will increase annually by the inflation rate of the United States plus the added value tax over the amount of the payment. The Company entered into an amendment agreement for technical assistance and transfer of knowledge, which establishes that the compensation will be paid on a quarterly basis beginning in January 1, 2008, and that such payments are to be deducted from the annual compensation. At December 31, 2018, 2019 and 2020, the expenses for technical assistance amounted to Ps.386,249, Ps. 404,086 and Ps.175,615, respectively which are recorded in the consolidated comprehensive income statement within the aeronautical and non-aeronautical service cost line. ITA also has the right to refund the expenses incurred during the provision of the services specified in the agreement. The ITA series “BB” shares were put in a trust in order to ensure compliance with the technical assistance agreement, among other things.

Commitments and contingencies_

Commitments and contingencies:	12 Months Ended
	Dec. 31, 2020
Commitments and contingencies:
Commitments and contingencies:	Note 15 - Commitments and contingencies: Commitments a. The Company began leasing office space on May 21, 2015, under an operating lease agreement. This agreement includes an available extension of 60 months. The monthly rent due is USD23.55 (Ps.469 approximately). The total minimum future payments derived from the non-cancellable operating lease agreement that shall be covered in the future are as follows: Up to one year Ps. 5,626 Between one and three years 19,222 Total Ps. 24,848 As of December 31, 2019 and 2020, the amortization per right-of-use assets within the aeronautical and non-aeronautical service cost in the statement of income, was approximately Ps.5,232 and Ps.6,304, respectively. (See Note 17.8.) b. On June 22, 2018, the Company received SCT approval for the MDP for the five-year period from 2019 to 2023 in which the Company committed to carry out improvements. In September, 2020, the Federal Civil Aviation Agency approved the Company's request for rescheduling (the deferral of) certain investments corresponding to 2020 for a total amount of Ps.2,292,355, to be fulfilled in 2021, due to contingencies due to COVID-19, which affected the conditions of the production and construction industry, interrupting the continuation of works and signing of new contracts that are indicated in the PMD 2019-2033. At December 31, 2020, investment commitments for that MDP are as follows: Period Amount 2021 Ps. 5,460,586 2022 1,907,832 2023 892,356 Ps. 8,260,774 (1) (1) Figures in thousand pesos adjusted at December 31, 2020 based on the Construction Price Index (IPCO) in the terms of the MDP. c. Pursuant to the terms for the purchase of the land in Huatulco that occurred in October 2008, the Company has the obligation to build 450 hotel rooms, for which purpose the Company will enter into agreements with third parties to develop the comprehensive tourism plan without a specific due date. At December 31, 2020, there is an indefinite extension to this commitment issued by the National Tourism Fund (FONATUR by its initials in Spanish). d. As part of the Concession Agreement, Aerostar has committed to fund and complete certain capital and repair projects with respect to the LMM Airport Facilities. The Company has no time restrictions to complete these projects, except that they must be made at any time during the term of the lease. As these projects are carried out, repairs will be recorded as expenses incurred or capitalized and depreciated according to their nature; consistent with the Company's accounting policies. Capital projects will be capitalized as part of an intangible concession improvement asset and will be amortized over their useful lives or the remaining life of the concession contract, whichever is less. Some commitments were excluded from the liability for initial obligations assumed due to factors of uncertainty, the variability of future costs and the extended period of time in which commitments can be fulfilled. As of December 31, 2019 and 2020, Aerostar fulfilled the agreed commitments. e. On September 20, 2017, Hurricane Maria made landfall on the island of Puerto Rico. Operations were suspended at the LMM Airport on the 19th and resumed in a limited manner on the 21st of the month. The damages to airport infrastructure have been evaluated by the Company to be approximately USD29.7 million approximately, of which most have been disbursed at the reporting date and which amount will be recorded in the cost of services as incurred. The infrastructure has material damage insurance. During the 2019 and 2020 fiscal years, insurance recovery was obtained for USD15.7 and USD7.3 million, approximately Ps.289,822 and Ps.158,906 thousand, respectively, which are recognized in the comprehensive statement of income as the certification is obtained that the funds were used for the defined purposes and the indicated works. During 2019 and 2020, Ps.204,719 and Ps.158,881 were recognized as other income. As of December 31, 2020, there is no balance for insurance recovery. (See note 5.1.) f. Under the Plan for the Refurbishment and Modernization of the Airplan Concession Contract, the concessionaire is currently committed to delivering the work known as “Plataforma, Calle de Conexión y Bodegas del Terminal de Carga del Aeropuerto José María Córdova de Rionegro” (Platform, Connection Road and Cargo Terminal Warehouse at the José María Córdova Airport in Rionegro), which as agreed by the parties in Amendment No. 18 of the Concession Contract, should have been delivered on December 15, 2018. A time extension was therefore requested for delivery of that work, which was granted via an amendment to the Concession Contract under Amendment No. 23 which extends the term for delivery of that work by 18 months as from December 15, 2018. As of December 31, 2020, the work was still under construction. The work has since been completed. g. As it concerns complementary works, in addition to those specified in the Airplan Concession Contract (via Amendment No. 8 dated 2014), a conclusion is still pending the construction of the modules connecting the terminal building with the parking lot and José María Córdova flight works pertaining to one of the connection modules known as Point B. Due to technical difficulties, an order for suspension was issued and a new design was determined. Via amendment No. 22 to the concession contract dated April 4, 2018, the term for those works was extended by 541 days from April 4, 2018. As of December 31, 2019, the project has been completed. Contingencies As of December 31, 2019 and 2020, the Company has confirmed that the results of its lawsuits cannot be accurately predicted as their due processes are currently ongoing and there are not enough elements to determine whether they could largely affect the Company’s financial position in the case of an adverse ruling. h. i. j. k. l. The parties appealed the determination and, on July 31, 2020, the Court of Appeals ruled in favor of Aerostar, determining, among other things, that Aerostar is the only entity entitled to collect and withhold the charge for each gallon of jet fuel. which is dispatched at the LMM airport. On August 31, 2020, the Ports Authority filed an appeal with the Supreme Court of Puerto Rico. As of the date of this report, the judicial process continues.

Basis for preparation_

Basis for preparation:	12 Months Ended
	Dec. 31, 2020
Basis for preparation:
Basis for preparation:	Note 16 - Basis for preparation: The accompanying consolidated financial statements at December 31, 2019 and 2020 have been prepared in accordance with the IFRS and their Interpretations (IFRIC) as issued by the International Accounting Standard Board (IASB). 16.1) Basis of measurement The consolidated financial statements have been prepared on the historical cost basis. Except for certain financial instruments measured at amortized cost or at their fair value as explained in the accounting policies described below. The consolidated financial statements have been prepared under the going concern basis. 16.2) Use of estimates and judgments The preparation of consolidated financial statements requires management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, revenues and expenses. The areas involving a higher degree of judgment or complexity, or the areas where assumptions and estimates are significant to the consolidated financial statements, are described in Note 19. Critical estimates and assumptions are reviewed regularly. Adjustments to the accounting estimates are recognized in the period in which the estimate is reviewed and in any future period affected.

Summary of the main accounting

Summary of the main accounting policies:	12 Months Ended
	Dec. 31, 2020
Summary of the main accounting policies:
Summary of the main accounting policies:	Note 17 - Summary of the main accounting policies: In the following we point the main standards, interpretations or changes to existing standards in effect for the first time for the period beginning on January 1, 2020: 17.1) New standards and amendments The Standards and amendments which became effective as from January 1, 2020, did not have a significant impact on the Company. Forthcoming requirements: On January 23, 2020, the following amendment to the standard was issued for which the Company expects to have no significant impacts: The narrow-scope amendments to IAS 1 Presentation of Financial Statements clarify that liabilities are classified as either current or noncurrent, depending on the rights that exist at the end of the reporting period. Classification is unaffected by the expectations of the entity or events after the reporting date (for example, the receipt of a waver or a breach of covenant). The amendments also clarify what IAS 1 means when it refers to the ‘settlement’ of a liability. The amendments could affect the classification of liabilities, particularly for entities that previously considered management’s intentions to determine classification and for some liabilities that can be converted into equity. They must be applied retrospectively in accordance with the normal requirements in IAS 8 Accounting Policies, Changes in Accounting Estimates and Errors. In May 2020, the IASB issued an Exposure Draft proposing to defer the effective date of the amendments to January 1, 2023. There are no other standards that have not yet gone into effect that could be expected to significantly impact the Company in current or future reporting periods and in foreseeable future transactions. The company applied the following standards and modifications, which did not have a significant impact, for the first time for the annual reporting period beginning on January 1, 2019: • IFRS 16 Leases Tenant: As described in Note 7.1 to our consolidated financial statements, the impact on the Company as a lessee due to the adoption of IFRS 16 was not significant. See Note 17.8.2 to our consolidated financial statements for a detailed description of this policy. Landlord: The Company did not have to make adjustments to the accounting for its operating leases from the perspective of the lessor derived from the adoption of this standard. See Note 18.8.1 to our consolidated financial statements for a detailed description of this policy. • IFRIC 23 Uncertainty over Income Tax Treatments The interpretation explains how to record and measure current and deferred tax assets and liabilities when there is uncertainty concerning tax treatment. In particular, it explains: - - - - - Although there are no new disclosure requirements, entities are reminded of the general requirement to provide information on judgments and estimations applied when preparing the financial statements. The Company has evaluated the provisions of this interpretation and does not consider there to be a significant impact from the adoption of IFRIC 23. 17.2) Consolidation and equity method The consolidated subsidiaries of the Company, for which it has a shareholding as of December 31, 2019 and 2020, are shown as follows: Shareholding percentage (%) Main activity Aeropuerto de Cancún, S. A. de C. V. 100 % Airport services Aeropuerto de Cozumel, S. A. de C. V. 100 % Airport services Aeropuerto de Mérida, S. A. de C. V. 100 % Airport services Aeropuerto de Huatulco, S. A. de C. V. 100 % Airport services Aeropuerto de Oaxaca, S. A. de C. V. 100 % Airport services Aeropuerto de Veracruz, S. A. de C. V. 100 % Airport services Aeropuerto de Villahermosa, S. A. de C. V. 100 % Airport services Aeropuerto de Tapachula, S. A. de C. V. 100 % Airport services Aeropuerto de Minatitlán, S. A. de C. V. 100 % Airport services Cancun Airport Services, S. A. de C. V. (*) 100 % Airport services Aerostar Airport Holdings, LLC 60 % Airport services Sociedad Operadora de Aeropuertos Centro Norte, S.A. 100 % Airport services RH Asur, S. A. de C. V. 100 % Administrative services Servicios Aeroportuarios del Sureste, S. A. de C. V. 100 % Administrative services Asur FBO, S. A. de C. V. (*) 100 % Administrative services Caribbean Logistics, S. A. de C. V. (*) 100 % Cargo services Cargo RF, S. A. de C. V. (*) 100 % Cargo services (*) These subsidiaries sub-consolidate at the Cancún Airport. Aerostar information Aerostar records its financial information on accounting principles in United States (US GAAP) and in USD, a translation to Mexican pesos is performed and a reconciliation from US GAAP to IFRS is carried out. Aerostar reports its financial information in IFRS, for purposes of consolidating in the Company. The exchange rate used at 2019 and 2020 year end was Ps.18.86 and Ps.19.91 Mexican Pesos per Dollar, respectively. Relevant information about Aerostar and its significant non-controlling interest As of December 31, 2018, 2019 and 2020, the condensed financial information of Aerostar, where there is a significant non-controlling interest, is presented as follows: December, 31 2018 2019 2020 Condensed statement of financial position Cash and cash equivalents Ps. 868,095 Ps. 698,466 Ps. 804,634 Restricted cash and cash equivalents 47,332 165,622 5,055 Other current assets 175,479 133,992 566,031 Total current assets 1,090,906 998,080 1,375,720 Financial liabilities: Current liabilities (640,785) (672,943) (606,433) Working capital 450,121 325,137 769,287 Land, furniture and equipment 174,450 160,186 151,971 Intangible assets, airport concessions - Net 13,587,071 12,956,965 13,535,370 Other long term assets 544 16,759 32,578 Long term debt (7,282,268) (6,799,941) (7,171,278) Accounts payable to the Company (1,152,805) (372,798) (104,065) Other long term liabilities (21,609) (19,783) (19,864) Deferred income tax - Net (330,999) (371,984) (448,829) Shareholders’ equity Ps. 5,424,505 Ps. 5,894,541 Ps. 6,745,170 Year ended December, 31 2018 2019 2020 Condensed statements of comprehensive income Revenue Ps. 3,025,267 Ps. 3,306,149 Ps. 2,902,238 Operating cost and expenses (2,098,323) (2,270,055) (1,956,081) Other income 134,637 204,074 158,906 Comprehensive financial cost - Net (538,268) (485,037) (495,443) Deferred income tax (62,252) (55,781) (60,684) Net (loss) income for the year 461,061 699,350 548,936 Foreign currency translation (5,772) (229,314) (301,695) Total comprehensive income Ps. 455,289 Ps. 470,036 Ps. 247,241 Airplan information Airplan records and reports its financial information in IFRS as adopted in Colombia and their corresponding IFRIC issued by the IASB and in Colombian pesos. For purposes of consolidating Airplan in the Company, a translations to Mexican pesos is performed. The exchange rate used at 2019 and 2020 year end was Ps.173.63 and Ps.171.53 Colombian Peso per Mexican Peso, respectively. a. Subsidiaries Subsidiaries are all entities over which the Company has control. The Company controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are fully consolidated from the date on which control is transferred to the Company. They are deconsolidated from the date that control ceases. Intercompany transactions, balances, revenues and expenses due to transactions between the group companies were eliminated. The non-realized results were also eliminated. The subsidiaries’ accounting policies are consistent with the policies adopted by the Company. The Company uses the purchase method to recognize business acquisitions. The consideration for the acquisition of a subsidiary is determined based on the fair value of the net assets transferred, the liabilities assumed and the capital issued by the Company. The Company defines a business combination as a transaction in which it obtains control of a business, through which it has the power to govern and manage the relevant activities of the of assets and liabilities of said business with the purpose of providing return in the form of dividends, lower costs or other economic benefits directly to investors. The consideration transferred in the acquisition of a subsidiary is the fair value of the assets transferred, the liabilities incurred and the equity interests issued by the Company. The consideration transferred includes the fair value of any asset or liability that results from a contingent consideration agreement. The identifiable assets acquired, the liabilities and contingent liabilities assumed in a business combination are initially measured at their fair value on the date of acquisition. The Company recognizes any non-controlling interest in the acquired entity based on the proportional part of the non-controlling interest in the net identifiable assets of the acquired entity. Costs related to the acquisition are recognized as expenses in the consolidated statement of income as incurred. Goodwill is initially measured as the excess of the consideration paid and the fair value of the non-controlling interest in the acquired subsidiary over the fair value of the identifiable net assets and the liabilities acquired. If the consideration transferred is less than the fair value of the net assets of the acquired subsidiary in the case of a purchase at a bargain price, the difference is recognized directly in the consolidated statement of income. If the business combination is reached in stages, the book value at the date of acquisition of the participation previously held by the Company in the acquired entity, is remeasured at its fair value at the acquisition date. Any loss or gain resulting from such remeasurement is recognized in the results of the year. At the date of the measurement made by the management, a gain from business combinations was determined for Ps.7,029,200, which was reflected in the consolidated statement of comprehensive income. b. Changes in the interests of subsidiaries without loss of control Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions, which are transactions with shareholders in their capacity as owners. The difference between the fair value of the consideration paid and the interest acquired in the carrying value of the net assets of the subsidiary is recorded in stockholders’ equity. Gains or losses on the sale of non-controlling interests are also recorded in stockholders’ equity. c. Disposal of subsidiaries When the Company loses control over one entity, any retained interest in the entity is measured at fair value, recognizing the effect in income. Subsequently, the fair value is the initial carrying amount for the purpose of determining the retained interest as an associate, joint venture or financial asset, as appropriate. Additionally, the amounts previously recognized in Other Comprehensive Income (OCI) relating to those entities are canceled as though the Company had directly disposed of the related assets or liabilities. This means that the amounts previously recognized in OCI are reclassified to income for the period. d. Acquisition in stages The additional acquisition in joint venture accounted under the equity method is considered a business combination conducted in stages, which means that the fair value of interest previously acquired was also revalued. e. Joint Agreements Under IFRS 11 investments in joint arrangements are classified as either a joint operation or a joint venture depending on the contractual rights and obligations of each investor, rather than the legal structure of the joint arrangement. f. Joint ventures The participation in joint ventures is accounted for under the equity method, after being initially recognized at cost in the consolidated statement of financial position. On February 20, 2020, Cancún Airport entered into a contractual agreement with Aviation Investments, LLC, to set up a joint venture through a separate legal entity called Airport Development Group, LLC, agreeing to a 50% stake each. Initial investment amounted to USD500 (approximately Ps. 10,556). According to the agreement, decisions on the relevant activities of the entity require unanimous consent of both parties. The Company assessed the nature of the transaction and determined it was a joint venture. Joint ventures are recognized through the equity method. g. Under the equity method, investments are initially recognized at cost and are subsequently adjusted to recognize equity in post-acquisition results, as well as movements in other comprehensive income. Dividends received or receivable from joint ventures are recognized as a reduction in the amount of the investment. When the Company's share in the losses of a joint venture equals or exceeds its share in the joint venture (which includes any long-term interest that is in substance part of the Company's net investment in the joint venture), the Company does not recognize additional losses, unless it has incurred obligations or made payments on behalf of or on behalf of the joint venture. Unrealized income on transactions between Group Companies and their joint ventures are eliminated up to the amount of the Group's interest in the joint venture. Unrealized losses are also eliminated unless the transaction provides some evidence of impairment of the transferred asset. The accounting policies of the investments accounted for under the equity method have changed when necessary to ensure consistency with the policies adopted by the Company. 17.3) Translation of foreign currencies Functional currency and reporting currency Items included in the consolidated financial statements of each of the companies of the Company are measured in the currency of the primary economic environment in which the entity operates, i.e., its “functional currency” which is also the reporting currency. The consolidated financial statements are presented in thousands of Mexican pesos, which is the Company’s reporting currency. 17.3.1) Consolidation of subsidiaries with a functional currency different from the reporting currency The results and financial position of Aerostar and Airplan (none of which handle a currency that corresponds to a hyperinflationary economy) expressed in a functional currency other than the reporting currency are converted to the reporting currency as follows: i. The assets and liabilities recognized in the consolidated statement of financial position are translated at the exchange rate on the balance sheet date. ii. The stockholders’ equity in the consolidated statement of financial position is translated using the historical exchange rates. iii. Income and expenses recognized in the consolidated statement of income are translated at the average exchange rate for each year (unless that average is not a reasonable approximation of the effect of translating the results derived from the exchange rates prevailing at transaction dates, in which case the Company uses the respective rates). iv. The resulting exchange differences are recognized within OCI. Goodwill and fair value adjustments that arise on the date of acquisition of a foreign operation to measure them at fair value are recognized as assets and liabilities of the foreign entity and are converted at the closing exchange rate. 17.3.2) Transactions in foreign currency and results from exchange fluctuations Operations carried out in foreign currency are recorded in the functional currency applying the exchange rates in effect at the transaction date or the exchange rate at the date of the valuation when the items are revalued. Exchange differences arising from fluctuations in the exchange rates between the transactions and settlement dates, or the consolidated statement of financial position date, are recognized in the consolidated comprehensive income statement. 17.4) Cash and cash equivalents Cash and cash equivalents include cash, bank deposits and other highly liquid investments with low risk of changes in value with original maturities of three months or less. As of December 31, 2019 and 2020, cash and cash equivalents consisted primarily of peso and dollar denominated bank deposits and peso denominated investment bonds issued by the Mexican Federal Government. 17.5) Fiduciary rights In accordance with the requirements of the concession agreement, Airplan was required to constitute a trust, with Fiduciaria Bancolombia as trustee, to administer the concession’s resources and to oversee the payment of the concession’s obligations by the concessionaire. Airplan transfers all of the gross income it receives and all of the debt and capital resources it obtains from the administrations of the concession. 17.6) Restricted cash and cash equivalents Restricted cash includes cash and cash equivalents that are restricted in terms of withdrawal or use. The nature of the restrictions includes restrictions imposed by financing agreements, federal agency funds related to capital expenditures, for example, for purposes of Aerostar, PFC and Airport Improvement Program (AIP) or other reserves (e.g., fund for promotion and support of air travel). Aerostar has restricted cash of Ps.26,849 and Ps. 5,055 at December 31, 2019 and 2020, respectively. Restricted cash and cash equivalents is presented as current if it is expected to be used within twelve months of the filing date. Any restricted fund beyond twelve months is recorded as non-current. Restricted cash is presented in the consolidated statements of cash flows within the investments activities since it is related to the investment in airport infrastructure. 17.7) Financial assets a. Classification - the Company classifies its financial assets into the following measurement categories: a) financial assets measured at amortized cost; and b) financial assets subsequently measured at fair value (either through other comprehensive income or through profit or loss). At present, the Company does not hold any financial assets. This classification depends on the business model of the Company to manage its financial instruments and the terms of the instrument's contractual cash flows. The Company reclassifies financial assets when, and only when, it changes its business model for the management of those assets. The Company’s financial assets are measured at amortized cost, since contractual terms comply with the SPPI (solely payment of principal and interest) requirement, and the Company’s business model is achieved by collecting cash flows. b. Measurement.- At initial recognition, financial assets at amortized cost are measured at fair value plus transaction costs that are directly attributable to their acquisition. Transaction costs of financial assets measured at fair value (through profit or loss or through other comprehensive income) are recognized in profit or loss as incurred. Gains and losses on assets measured at fair value are recorded in profit or loss or in other comprehensive income. Financial assets with embedded derivatives are considered as a whole if it is determined that the cash flows correspond exclusively to the payment of principal and interest. Accounts receivable are non-derivative financial assets with fixed or determinable payments that are not quoted in an active market. They are included as current assets, except for maturities greater than 12 months following the date of the Statement of Financial Position. These are classified as non-current assets. Loans and accounts receivable are initially recognized at fair value plus directly attributable transaction costs, and subsequently measured at amortized cost. c. Impairment of financial assets - Impairment losses are presented as net impairment losses within the operating result. Subsequent recoveries of previously canceled amounts are credited against the same line. For accounts receivable, the Company applies the simplified approach allowed by IFRS 9, which requires that the expected losses over the life of the instrument be recognized from the initial recognition of accounts receivable. See Note 6. 17.8) Leasing 17.8.1) As lessor The leasing of terminal space made by the Company in its capacity as lessor at the terminals is documented by contracts with either fixed income or monthly fees based on the higher amount of a minimum monthly fee or a percentage of the lessee’s monthly revenue. Since the leased assets are part of the concession assets and thus do not belong to the Company, there is no transfer of the risks and rewards of ownership and therefore are classified as operating leases. Revenues from operating leases are recognized as non-aeronautical revenues on a straight line basis over the lease term. 17.8.2) As lessee Leases are recognized as right-of-use assets and lease liabilities on the date the leased assets are available for use by the Company. Right-of-use assets and liabilities arising from a lease under IFRS 16 “Leases” are initially measured at the present value. Lease liabilities include the present value, net of the following lease payments: i) fixed lease payments, less any lease incentive receivable; ii) variable lease payments that depend on an index or a rate, initially measured using the index or rate at the commencement date; and iii) the amounts that the Company expects to pay under residual value guarantees. Lease payments must be discounted at the rate implicit in the lease. In the case of the Company, the interest rate cannot be readily determined. Thus, the lessee’s incremental borrowing rate is used, which is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. To determine the borrowing incremental rate, the Company: · uses, whenever possible, recent third-party financing received by lessee as a starting point, adjusted to reflect changes in financing conditions since third-party financing was received; · uses other approaches, starting with a risk-free rate, adjusted for the credit risk of leases held that have not obtained recent third-party financing; and · applies specific adjustments to the lease, e.g. term, country, currency and guarantees. Lease payments are distributed among principal and interest expense. Interest expense is charged to profit or loss over the lease term to produce a constant periodic interest rate on the remaining liability for each period. Right-of-use assets are measured: · Lease initial measurement amount. · Any lease payment made on or before the commencement date less any lease incentive received. · Any initial direct cost. Right-of-use assets are generally depreciated on a straight-line basis over the shorter period of the asset useful life and the lease term, and the depreciation expense is recognized in the Statement of profit or loss. Payments of short-term leases and leases of low-price assets are expensed by applying the straight-line method. Short-term leases are leases with a term of 12 months or less. To determine the lease term, the Company considers all facts and circumstances creating an economic incentive to exercise an extension option. The reasonable certainty assessment is only reviewed when there is a significant event or a significant change in circumstances that affect such assessment and that are within lessee’s control. At December 31, 2020, there are no contracts regarding which there is a reasonable certainty to extend lease terms. Policy applied before January 1, 2019: As lessor The leasing of terminal space made by the Company in its capacity as lessor at the terminals is documented by contracts with either fixed income or monthly fees based on the higher amount of a minimum monthly fee or a percentage of the lessee’s monthly revenue. Since the leased assets are part of the concession assets and thus do not belong to the Company, there is no transfer of the risks and rewards of ownership and therefore are classified as operating leases. Revenues from operating leases are recognized as non-aeronautical revenues on a straight line basis over the lease term. As lessee Leases in which a significant portion of the risks and rewards of the leased property has not been transferred to the Company as lessee were classified as operating leases. Payments made under an operating lease (net of any incentive received from lessor) are charged to profit or loss according to the straight-line method over the life of the lease. Leases of property, plant and equipment in which Airplan has substantially all the risks and rewards of ownership are classified as financial leases. Financial leases are capitalized at the beginning of the lease to the minor between the fair value of the leased asset and the present value of the minimum lease payments. Each payment of a financial lease is distributed between the liability and the financial costs. The obligations of a financial lease, net of the financial burden, are presented as debts (financial obligations) in current or non-current depending on whether the payment due is less than 12 months. The financial costs are charged to the results during the lease period so that a constant periodic interest rate is obtained on the remaining balance of the liability for each period. Property, plant and equipment acquired under a financial lease are amortized in the shortest period between the useful life of the asset and the term of the lease. 17.9) Land, furniture and equipment Furniture and equipment are recorded at cost less accumulated depreciation and impairment loss. The cost includes expenses directly attributable to the acquisition of those assets and all costs associated with placing the assets in the location and in the condition necessary for them to operate as intended by management. Land is recorded at cost and it is not depreciated. Depreciation of other items of plant and equipment is calculated on the straight-line method based on the residual values over their estimated useful lives. The useful lives from the date of acquisition are 10 years. The useful lives at the acquisition date of the furniture and equipment are as shown below: 2019 2020 Furniture equipment 10 a 20 % 10 to 20 % Machinery 10 a 20 % 10 to 20 % Computer equipment 20 a 33 % 20 to 33 % Transportation equipment 20 a 25 % 20 to 25 % Improvements to leased premises 10 % 10 % The residual values, useful life and depreciation method are reviewed and adjusted, if necessary, on an annual basis. 17.9.1) Land Land represents, mainly, a territorial extension for which the Company has an obligation of constructing 450 hotel rooms along with FONATUR in Huatulco which are recorded at its cost and are not subject to depreciation. See Note 15c and 21. 17.10) Intangible assets 17.10.1) Concessions The airports that are part of the Company performed the analysis of the following criteria that must be taken into account to know if they are within the scope of IFRIC 12: a. The grantor controls or regulates what services the operator must provide with the infrastructure, to whom it must provide them at what price. · The grantor does not need to have full price control; it is sufficient that the price is regulated by the grantor, the contract or the regulator. · The grantor can control the price through a limit mechanism. · The price can vary from fixed price arrangements to those based on a formula up to a maximum price. b. The grantor controls, through ownership, the right of benefits or otherwise, any significant residual interest in the infrastructure at the end of the term of the agreement. Taking into consideration the foregoing, these criteria are applicable to each of the concessions that the Company has, which is why their measurement and determination will be considered within the scope of IFRIC 12. In addition, at the end of all the concessions, all assets become the property of the nation in which the concession is located. Within the scope of IFRIC 12, the respective assets can be classified as: · Financial assets: when the licensor establishes an unconditional right to receive cash flows and other financial assets independently of the use of the public service by the users. · Intangible assets: only when the licensor agreements do not establish a contractual right to receive cash flows and other financial assets from the licensor, independently of the use of the public service by the users. Airport concessions have been considered within the scope of IFRIC 12 as an intangible asset because they comply with the above provisions and no financial assets have been recognized in that regard. Mexico: Rights-to-use airport facilities and airport concessions include the acquisition of the nine airport concessions and the rights acquired. Amortization is computed using the straight-line method over the estimated useful life of the concessions, (original term of 50 years as of November 1, 1998, 28 years as of December 31, 2020). Aerostar: Aerostar’s airport concession, which includes the obligation to make certain capital expenditures in improvement projects, is considered an intangible asset and is recognized at cost less accumulated amortization and impairment losses. Amortization is calculated using the straight-line method during the term of the agreement (40 years); 33 years remaining as of December 31, 20120. Airplan: In the case of Airplan, the right granted by the Concession Contract No.8000011‑OK and Public Tender No. 10000001OL2010, respectively, is recorded as an intangible asset, through which the grantors assign to the Company the regulated and unregulated income corresponding to each of the airports subject to the concession. In turn, the costs per loan that are related to the works in execution are part of the intangible. The intangible asset resulting from the recognition and updating of the estimated income of the contract is amortized based on the proportion of the accumulated income of the contract and the total income. Amortization is recognized in the results of the period. The useful life for the amortization was determined as the duration of the concession and the amortization rate is calculated based on the percentage of execution of the revenues with respect to the total expected income of the financial model that the Company has. The concession remains in effect until the date on which any of the following events occur: (i) the regulated revenues generated are equal to expected regulated revenues, provided that the concession agreement has been in force for at least 24 years or (ii) the concession agreement has been in force for at least 40 years, regardless of whether the regulated revenues generated are equal to the expected revenues. If the regulated revenues generated are equal to the expected revenues before the end of the 24 year period, the concession agreement will remain in effect until the end of such period. Management considers such factors in determining the final year of the concession term, which is 2032 (in accordance with legal guidelines, the concession term may be extended until 2048 as long as the aforementioned requirements established by the grantor are met). Therefore, the concession will have a useful life until at least the year 2032, 12 years remain as of December 31, 2020. 17.10.2) Licenses and commercial direct operation (ODC, by its initials in Spanish) These items are recognized at their cost less the accrued amortization and any recognized impairment losses. They are amortized on a straight line basis using their estimated useful life, determined based on the expected future economic benefits, and are subject to testing when indication of impairment is identified. The estimated useful lives at December 31, 2020 are as follows: Licenses 28 years ODC 28 years Commercial Rights of Aerostar 32 years Commercial Rights of Airplan 12 years 17.10.3) Goodwill Goodwill represents the acquisition cost of a subsidiary in excess of the Company’s interest in the fair value of the identifiable net assets acquired, determined at the acquisition date, and it is not subject to amortization. Goodwill is shown separately in the consolidated statement of financial position and is recorded at cost less accumulated impairment losses, which are not reversed. Gains and losses on the disposal of an entity include the carrying amount of goodwill relating to the entity sold. 17.10.4) Intangible assets acquired as part of a business combination When an intangible asset is acquired as part of a business combination, it is recognized at fair value at acquisition date. Subsequently, intangible

Financial risk management_

Financial risk management:	12 Months Ended
	Dec. 31, 2020
Financial risk management:
Financial risk management:	Note 18 - Financial risk management: The Company is exposed to financial risks that result from changes in interest rates, foreign exchange rates, price risk, liquidity risk and credit risk. The Company controls and maintains the treasury control functions related to transactions and global financial risks through practices approved by its Executive Board and Board of Directors. This note contains information regarding the Company’s exposure to each of the aforementioned risks, and the objectives, policies and procedures to measure and manage risk. The main risks to which the Company is exposed are: 18.1) Market risk 18.1.1) Interest rate risk 18.1.2) Exchange rate risk 18.1.3) Price risk 18.2) Liquidity risk 18.3) Credit risk - credit quality 18.1.1) Interest rate risk The Company has contracted bank loans to partially finance its operations. These transactions expose the Company to interest risk, with the main exposure to the risk of variable interest rates resulting from changes in the market base rates (banks charge interest based on TIIE 28 days plus 1.25 points in 2020 and 2019) that are applied to the Company’s bank loans maturing in 2022 and 2024. Regarding the sensitivity analysis, it has been observed that during 2020 and 2019 the reference rate used by the Company (TIIE) has remained stable. As of December 31, 2020 and 2019 there are no LIBOR loans. Based on this fact, the risk is considered low, derived from the materiality of the possible effect. 18.1.2) Exchange rate risk The Company is exposed to minor risk for changes in the value of the Mexican Peso against the U. S. Dollar. Historically, a significant portion of income generated by the Company (mainly derived from the fees charged to international passengers) is denominated in U. S. Dollars, and despite that, income is invoiced in Pesos at the average exchange rate of the previous month and likewise the cash flows are collected in Pesos. At December 31, 2019 and 2020, the Company is exposed to exchange rate risk for monetary position is as follows: December 31, 2019 2020 Monetary position: Asset Ps. 164,370 Ps. 88,426 Liability (4,853) (5,578) Ps. 159,517 Ps. 82,848 At December 31, 2019 and 2020, the exchange rate was Ps.18.86 and Ps.19.91, respectively. Had the currency weakened by 5% in 2019 (5% in 2018) with respect to the U.S. Dollar, the Company would have had a loss on monetary position at the close in the amount of Ps.81.5 million in 2020 (monetary utility of Ps.150.4 million in 2019). As of April 12, 2021, the date of issuance of this report, the last known exchange rate was Ps.20.305. 18.1.3) Price risk The rate regulation system applicable to the airports of the Company imposes maximum rates for each airport, which should not be exceeded on an annual basis. The maximum rates are the maximum annual income per unit of traffic (one passenger or 100 kg of cargo). If the maximum annual rate is exceed, the government authorities could revoke one or more of the Company’s concessions. The Company monitors and adjusts its income on a regular basis in order for its annual invoicing not to exceed the maximum rate limits. Concentrations: At December 31, 2019 and 2020, approximately 55.02% and 49.9%, of revenue, not including income from construction services, resulted from operations at the Cancún International Airport. 18.2) Liquidity risk Liquidity risk is the risk that the Company will not be able to meet its funding requirements. The Company’s management has established policies, procedures and limits of authority that govern the Treasury function. Treasury is responsible for ensuring liquidity and managing the working capital to ensure payments to suppliers, debt servicing and funding of operating costs and expenses. The Company is cautious about liquidity risk and maintains sufficient cash and negotiable instruments and the availability of financing through an adequate amount of credit facilities to meet obligations at maturity and settle trading positions. At period end on December 31, 2020, the Company had demand deposits amounting to Ps.5,192,628 (Ps.6,192,679 in 2019) and available credit lines amounting to Ps.1,500,000 and USD20,000 (approximately Ps.399,010), to manage liquidity risk. Due to the dynamic current situation and uncertainty, the Company's Treasury function maintains flexibility in the funding under credit lines and keeping availability. Company’s management changes its liquidity reserves forecast (including unused credit lines) and cash and cash equivalents based on expected cash flows. In general, this is conducted at country level for operating entities of the Company according to practices and limits set. These limits vary in each country, taking into account the liquidity of the market in which the Company operates. Additionally, the Group’s policy on liquidity management includes cash flows projections in the main currencies and the consideration of the necessary level of liquid assets to meet these projections; the control of liquidity ratios of the Statement of Financial Position regarding the internal and external regulatory requirements, and the maintenance of the debt financing plans. The following table shows the liquidity position for each of the Company's countries of operations. December 31, 2019 Cash and equivalents Total Debt Debt term short Debt term long Mexico Ps. 4,991,567 Ps. 3,992,467 Ps. 23,998 Ps. 3,968,469 Aerostar 698,466 6,799,941 311,372 6,488,569 Airplan 502,646 2,920,485 214,237 2,706,248 Total Ps. 6,192,679 Ps. 13,712,893 Ps. 549,607 Ps. 13,163,286 December 31, 2020 Cash and equivalents Total Debt Debt term short Debt term long Mexico Ps. 4,058,495 Ps. 3,971,210 Ps. 322,209 Ps. 3,649,001 Aerostar 804,634 7,171,278 529,337 6,641,941 Airplan 329,499 2,757,858 287,204 2,470,654 Total Ps. 5,192,628 Ps. 13,900,346 Ps. 1,138,750 Ps. 12,761,596 During the year ended December 31, 2020, the Company implemented actions to respond to possible liquidity risk resulting from the COVID-19 pandemic, enabling positive operational cash flow for the year. In response to possible liquidity risk resulting from the COVID-19 pandemic, the Company implemented the following actions: a. In Airplan, waivers were obtained from the institutions involved in the syndicated loan in relation to financial obligations, representing no costs for the Company. These waivers were granted in two stages: the first one was granted during the third quarter of 2020 and exempted the Company from the financial obligation of keeping a Debt Coverage Ratio for the measurement period for the third and fourth quarter of 2020 and for the first quarter of 2021. Subsequently, in 2021, new waivers were obtained from the institutions involved in the syndicated loan, representing no costs for the Company, and exempting it from its financial obligation to keep a Debt Coverage Ratio in every measurement period in 2021 until the first quarter of 2022. Therefore, the Company is covered and exempted from any consequence relating to noncompliance and penalties until March 31, 2022. b. Operating costs and expenses reduction policies were established in the three countries in which the Company operates. c. In September, 2020, the AFAC accepted the Company’s request to reschedule (deferral) certain investments amounting to Ps.2,292,355 intended for 2020 to be made in 2021 with no additional cost, due to the COVID-19 contingency, which affected the conditions in the production and construction industry, interrupting works in progress and the execution of new agreements. The investment committed in Mexico for 2021 amounts to Ps.5,460,586, which is expected to be covered with cash on hand, operational flow and, where appropriate, the Company’s credit lines. d. The Company’s Stockholders agreed to delegate to the Administrative Board the power to decree the payment of ordinary dividends for Ps.2,463,000 (nominal) (See Note 13). At the date of these Financial Statements, these dividends have not been decreed. e. Aerostar obtained funds under the CARES Federal Act in the current year. (See Note 4). f. In Mexico, a credit line for Ps.1,500,000 was obtained, which has not been used to date. On April 1, 2020, Aerostar drew down of a revolving credit line amounting to USD10,000 (approximately Ps.239,200) and, on December 30, 2020, obtained a credit line for USD20,000 (approximately Ps.399,010) that has not been used. On September 11, 2020, Airplan was granted a short-term loan for COP11,612,000 (approximately Ps.67,041) for a term of one year (See Note 10). The following table presents the analysis of the net financial liabilities of the Company based on the period between the date of the statement of consolidated financial position and the maturity date, including undiscounted contractual cash flows: Under Between 3 months Between 1 Between 2 and At December 31, 2019 3 months and one year and 2 years 5 years Bank loans and interest Ps. 14,639 Ps. 223,596 Ps. 228,073 Ps. 6,446,644 Long term debt 111,676 199,696 204,492 6,284,077 Suppliers 245,100 Accounts payable and accrued expenses 1,378,657 At December 31, 2020 Bank loans and interest Ps. 11,176 Ps. 797,339 Ps. 2,238,558 Ps. 3,881,097 Long term debt 114,420 215,815 233,123 6,408,818 Suppliers 353,806 Accounts payable and accrued expenses 1,187,345 The following table shows the Company’s short term liquidity as of: December 31, 2019 2020 Current assets Ps. 7,845,856 Ps. 7,716,049 Current liabilities 2,560,020 2,767,087 Short term position (liquidity) Ps. 5,285,836 Ps. 4,948,962 18.3) Credit risk - credit quality The financial instruments that are potentially subject to credit risks consist mainly of accounts receivable. Income obtained from fares charged to passengers is not guaranteed and therefore the Company faces the risk of not being able to collect the full amounts invoiced in the event of insolvency of its clients, which are the airlines. The Company frequently reviews financial instruments and tests them for impairment. (See Note 6.3). Due to the COVID-19 contingency that has affected the travel industry, some governments have imposed travel bans and restrictions. In view of the economic recession caused by the pandemic, the Company negotiated the extension of payment terms with several clients by means of promissory notes with a maturity not exceeding one year to secure payment. At December 31, 2020, the balance of the account notes receivable from third parties in Mexico and for Airplan amounts to Ps.185,140 and Ps.60,617. (See Note 6.2). In recent years, there have been airlines that have reported substantial losses, in addition to this, the income from passenger fees from main client airlines is not all guaranteed by guarantee or other type of guarantee. Therefore, in the event of insolvency of any of the airlines, the Company would have no certainty of recovering the total sum of amounts invoiced to the airlines for passenger fees. In August 2010, Grupo Mexicana filed for bankruptcy. Grupo Mexicana owes the Company Ps.128,000 for passenger fees. As a result of Grupo Mexicana’s bankruptcy, the Company has increased its reserve for uncollectable accounts by Ps.128,000 . The Company has determined that it may not be able to collect that amount. As a consequence of the COVID-19 pandemic, on December 11, 2020, ABC Aerolíneas, S. A. de C. V. (Interjet), ceased operations, which to date have neither been resumed nor are expected to resume in the short term. Accounts receivable for Interjet at December 31, 2020 was fully impaired. (See Note 6.3). The Company operates under three methods to collect from Airlines: · Credit, mainly offered to airlines with which there is a history of frequent and stable flights, · Advances, from airlines with reasonably stable flights or that are in the exploration stage of routes or destinations, and · Cash, mainly offered for Charter flights and airlines with new flights. With this segregation, the Company reduces its collection risk since the airlines that operate under methods b) and c) do not generate accounts receivable. Cash and cash equivalents are not subject to credit risks since the amounts are kept at financial institutions of good standing, and investments are subject to lower significant risk as they are being backed by the Mexican Federal Government or institutions with AAA high market ratings. 18.4) Capital management The objective of management is to safeguard the Company's ability to continue operating as a going-concern in order to provide returns for stockholders and benefits for other stakeholders and to maintain an optimal capital structure to reduce the cost of capital. These activities are monitored through the review of information pertaining to the Company's operation and the Industry. This effort is coordinated by the CEO. Through a planning method, detailed simulations are formulated of identified risks as they are known. The risks identified are valued in terms of probability and impact and are presented to the proper authorities. The result of all these activities is reported to the market through 20-F reports, the sole circular and quarterly reports by a financial Risk Analysis Committee that reports to Company's Board of Directors. During the year, there was no material uncertainty regarding the Company’s ability to continue as a going concern. At December 31, 2020, the Company’s Board has a reasonable expectation that the Company has the appropriate resources to continue operating at least for the next twelve months and that the use of the going concern basis of accounting is appropriate. 18.5) Fair value Financial instruments at fair value, presented by levels, in accordance with the valuation method used are included in levels 1 and 2. At December 31, 2019 and 2020, the Company has no financial instruments carried at fair value. The different levels have been defined as follows: Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities. Level 2: Quoted prices for similar instruments in active markets; quoted prices for instruments, identical or similar, in non-active markets and valuations through models where all significant data are observable in the active markets. Level 3: Asset or liability input that is not based on observable market data (i.e., non-observable). The fair value of financial instruments traded in active markets is based on market prices quoted at the consolidated statement of financial position closing date. A market is considered active if quotation prices are clearly and regularly available through a stock exchange, trader, dealer, industry group, price fixing services, or regulatory agency, and those prices reflect regularly and on current bases the market transactions under independent conditions. The quoted price used for the financial assets held by Company’s is the current offer price.

Critical accounting judgments a

Critical accounting judgments and key sources of estimation uncertainty:	12 Months Ended
	Dec. 31, 2020
Critical accounting judgments and key sources of estimation uncertainty:
Critical accounting judgments and key sources of estimation uncertainty:	Note 19 - Critical accounting judgments and key sources of estimation uncertainty: In applying the Company’s accounting policies, which are described below, Company management is required to make judgments, estimates and assumptions about the carrying amounts of assets and liabilities. Estimates and assumptions are based on historical experience and other factors considered relevant. Actual results could differ from those estimates. Critical accounting judgments Significant information on assumptions, critical judgments and uncertainty estimations recognized in the consolidated financial statements are as follows: 19.1 Revenue 19.2 Useful life of the Airplan concession 19.3 Evaluation of impairment of intangible assets, airport concessions and goodwill 19.1 Revenue As mentioned in Note 18.1.3, the Company regularly monitors and adjusts income so as to avoid exceeding the maximum rate at each of the airports operated by the Company in Mexico, which is the annual maximum income per traffic unit that can be received, and therefore the amount that the Company can record for services rendered whose prices are regulated. If the Company recognized income exceeding that maximum rate, the authorities could cancel one or more airport concessions. Therefore, the Company regularly monitors regulated income in Mexico to ensure it does not exceed the limit. The application of the procedure established in the concession titles for determining whether revenues are in excess of the maximum rates and securing the necessary information are complex procedures. Among the information used in determining the maximum rate is passenger traffic and cargo statistics, in addition to variables such as the National Producer Price Index (excluding oil), authorized rates for airport services and the Rate for Airport Use. 19.2 Useful life of the Airplan concession The overall duration of the Airplan concession depends on the revenues generated by the Colombian airports. In particular, the concession remains in effect until the date on which any of the following events occur: · The regulated revenues generated are equal to the expected regulated revenues, provided that the concession agreement has been in force for at least 24 years. · The concession agreement has been in force for at least 40 years, regardless of whether the regulated revenues generated are equal to the expected revenues. If the regulated revenues generated by the Colombian airports are equal to the expected revenues before the end of the 24 year period, the concession agreement will remain in effect until the end of such period. Thus, management considers such factors in determining the final year of the concession term, which is 2032; however, in accordance with legal guidelines, the concession term may be extended until 2048 as long as the aforementioned requirements established by the grantor are met. It must be taken into account, for purposes of the expected regulated revenues according to the definition in the concession contract, that the expected regulated revenues will increase once each of the complementary works (mandatory or voluntary) is delivered to the grantor. The Company conducts sensitivity analyses to determine the level of possible changes in the assumptions used to determine the useful life of the concession, in order to determine if the useful life would change significantly. At December 31, 2019 and 2020 the expected total revenues considering the additional works amount to Ps.19,217,035 and Ps.17,540,245, respectively. 19.3 Evaluation of impairment of intangible assets, airport concessions and goodwill Intangible assets, airport concessions and goodwill are tested for impairment at the reporting date, provided that the events or changes in circumstances indicate that the value of intangible assets could be impaired, and at least once a year in the case of goodwill. Due to the COVID-19 pandemic and the measures taken by governments to contain the spreading of the virus, there was a decrease in the number of passengers in our airports. To determine whether the value of intangible assets and goodwill has been impaired, the cash generating unit relating to the intangible asset and goodwill has to be valued using present value techniques. By applying this valuation technique, the Company is based on a series of factors, including historical results, business plans, forecasts and market data. This is further described in Note 8.1. As can be deducted from this description, changes in the conditions of these judgments and estimates can significantly affect the assessed value of intangible assets and goodwill.

Consolidated statements of ca_2

Consolidated statements of cash flows:	12 Months Ended
	Dec. 31, 2020
Consolidated statements of cash flows:
Consolidated statements of cash flows:	Note 20 - Consolidated statements of cash flows: As of December 31, 2018, 2019 and 2020, the analysis of net debt and movements in net debt is presented below: Long - term debt Bank Loans 2018 2019 2020 2018 2019 2020 Accounts payable Ps. 324,590 Ps. 311,372 Ps. 330,235 Bank loans (Note 10) Ps. 175,515 Ps. 238,235 Ps. 808,515 Bank loans (Note 10) 7,042,598 6,674,717 6,119,655 Long-term debt (Note 11) 6,957,678 6,488,569 6,641,941 Balances at December 31 Ps. 7,282,268 Ps. 6,799,941 Ps. 6,972,176 Ps. 7,218,113 Ps. 6,912,952 Ps. 6,928,170 Balances at January 1 of the debt-net Ps. 7,489,465 Ps. 7,282,268 Ps. 6,799,941 Ps. 10,494,853 Ps. 7,218,113 Ps. 6,912,952 Interest expense 475,110 444,028 450,806 696,641 601,873 398,899 Proceeds from bank loans 306,241 Interest paid (646,418) (486,164) (492,653) (578,600) (466,066) Payments of the long term debt and bank loan (205,308) (253,925) (3,090,124) (152,047) (245,520) Foreign currency translation (35,889) (234,883) 452,281 (166,301) (176,387) 21,664 Exchange (income)/loss on foreign currency (224,303) Balances at December 31 Ps. 7,282,268 Ps. 6,799,941 Ps. 6,972,176 Ps. 7,218,113 Ps. 6,912,952 Ps. 6,928,170

Subsequent Event_

Subsequent Event:	12 Months Ended
	Dec. 31, 2020
Subsequent Event:
Subsequent Event:	Note 21 - Subsequent Event: On February 11, 2021, the banking institutions involved in the syndicated loan waived the subsidiary Airplan for noncompliance with the Debt Coverage Ratio until the measurement date for the first quarter of 2022. Aerostar was eligible for additional funding under the second round of airport grants within the Coronavirus Response and Relief Supplemental Appropriation Act (CRRSAA), passed by the President of the United States on December 27, 2020. On February 18, 2021, official confirmation was received that the FAA granted Aerostar federal assistance amounting to USD10,577 (approximately Ps.210,574), which will be recognized once received, subject to verification of expenses with the relevant authorities. To date, no verifications have been conducted and no reimbursements relating to this grant have been received. Until the date of these Financial Statements, none of the credit lines available to the Company mentioned in Note 10 have been used. On February 19, 2021 FONATUR agreed to pay an advance payment for Ps.50,000 relating to purchase of land for Ps.286,283 and the remaining balance of Ps.236,283 before July 1, 2021 to purchase back land for Ps.286,283. On March 3, 2021 we received the initial payment from FONATUR for Ps.50 million. This agreement with reservation of title does not have any legal effects, and the Company will withhold conveying the land, until the aforementioned amount has been fully collected. Due to the health emergency generated by COVID-19, on April 7, 2021 the SCT approved an extraordinary review of the Mexican maximum rates which resulted in a reduction in committed investments and an increase in Mexican maximum rates in the master development plans for the years 2021 to 2023. Previous and reduced investments commitments for MDP is show as follows: Amount (1) Period Previous (2) Reduced 2021 Ps. 5,460,586 Ps. 3,064,148 2022 1,907,832 1,793,811 2023 892,356 457,470 Ps. 8,260,774 Ps. 5,315,429 (1) Figures in thousand pesos adjusted at December 31, 2020 based on the Construction Price Index (IPCO) in the terms of the MDP. (2) See Note 15 b. Measures imposed by several governments to contain the COVID-19 pandemic have affected the economic activity. For instance, the US Centers for Disease Control and Prevention (CDC) extended the requirement of COVID-19 negative tests for all air passengers arriving in the United States. As from January 26, 2021, protocols for traveling were implemented, including the requirement of a COVID-19 negative test before leaving the US and mandatory quarantine upon return. As from January 7, 2021, similar test requirements were implemented for air passengers traveling to Canada. Later, the Canadian government suspended flights between Canada, Mexico and the Caribbean until April 30, 2021. The COVID-19 pandemic still affects the industry, recording a high number of cases. To date, the consequences it might have on our business and results remain uncertain. The Company continues assessing this impact, controlling its commitments and implementing actions in response to possible events relating to the COVID-19 contingency that, to date, cannot be estimated.

Authorization of the consolidat

Authorization of the consolidated financial statements:	12 Months Ended
	Dec. 31, 2020
Authorization of the consolidated financial statements:
Authorization of the consolidated financial statements:	Note 22 - Authorization of the consolidated financial statements: The consolidated financial statements and their twenty three notes are an integral part of the consolidated financial statements, which were approved and proposed for their issuance to the Board of Directors on April 12, 2021 by Mr. Adolfo Castro Rivas, Chief Executive Officer of Grupo Aeroportuario del Sureste, S.A.B. de C.V.

Summary of the main accountin_2

Summary of the main accounting policies: (Policies)	12 Months Ended
	Dec. 31, 2020
Summary of the main accounting policies:
New standards and amendments	17.1) New standards and amendments The Standards and amendments which became effective as from January 1, 2020, did not have a significant impact on the Company. Forthcoming requirements: On January 23, 2020, the following amendment to the standard was issued for which the Company expects to have no significant impacts: The narrow-scope amendments to IAS 1 Presentation of Financial Statements clarify that liabilities are classified as either current or noncurrent, depending on the rights that exist at the end of the reporting period. Classification is unaffected by the expectations of the entity or events after the reporting date (for example, the receipt of a waver or a breach of covenant). The amendments also clarify what IAS 1 means when it refers to the ‘settlement’ of a liability. The amendments could affect the classification of liabilities, particularly for entities that previously considered management’s intentions to determine classification and for some liabilities that can be converted into equity. They must be applied retrospectively in accordance with the normal requirements in IAS 8 Accounting Policies, Changes in Accounting Estimates and Errors. In May 2020, the IASB issued an Exposure Draft proposing to defer the effective date of the amendments to January 1, 2023. There are no other standards that have not yet gone into effect that could be expected to significantly impact the Company in current or future reporting periods and in foreseeable future transactions. The company applied the following standards and modifications, which did not have a significant impact, for the first time for the annual reporting period beginning on January 1, 2019: • IFRS 16 Leases Tenant: As described in Note 7.1 to our consolidated financial statements, the impact on the Company as a lessee due to the adoption of IFRS 16 was not significant. See Note 17.8.2 to our consolidated financial statements for a detailed description of this policy. Landlord: The Company did not have to make adjustments to the accounting for its operating leases from the perspective of the lessor derived from the adoption of this standard. See Note 18.8.1 to our consolidated financial statements for a detailed description of this policy. • IFRIC 23 Uncertainty over Income Tax Treatments The interpretation explains how to record and measure current and deferred tax assets and liabilities when there is uncertainty concerning tax treatment. In particular, it explains: - - - - - Although there are no new disclosure requirements, entities are reminded of the general requirement to provide information on judgments and estimations applied when preparing the financial statements. The Company has evaluated the provisions of this interpretation and does not consider there to be a significant impact from the adoption of IFRIC 23.
Consolidation and equity method	17.2) Consolidation and equity method The consolidated subsidiaries of the Company, for which it has a shareholding as of December 31, 2019 and 2020, are shown as follows: Shareholding percentage (%) Main activity Aeropuerto de Cancún, S. A. de C. V. 100 % Airport services Aeropuerto de Cozumel, S. A. de C. V. 100 % Airport services Aeropuerto de Mérida, S. A. de C. V. 100 % Airport services Aeropuerto de Huatulco, S. A. de C. V. 100 % Airport services Aeropuerto de Oaxaca, S. A. de C. V. 100 % Airport services Aeropuerto de Veracruz, S. A. de C. V. 100 % Airport services Aeropuerto de Villahermosa, S. A. de C. V. 100 % Airport services Aeropuerto de Tapachula, S. A. de C. V. 100 % Airport services Aeropuerto de Minatitlán, S. A. de C. V. 100 % Airport services Cancun Airport Services, S. A. de C. V. (*) 100 % Airport services Aerostar Airport Holdings, LLC 60 % Airport services Sociedad Operadora de Aeropuertos Centro Norte, S.A. 100 % Airport services RH Asur, S. A. de C. V. 100 % Administrative services Servicios Aeroportuarios del Sureste, S. A. de C. V. 100 % Administrative services Asur FBO, S. A. de C. V. (*) 100 % Administrative services Caribbean Logistics, S. A. de C. V. (*) 100 % Cargo services Cargo RF, S. A. de C. V. (*) 100 % Cargo services (*) These subsidiaries sub-consolidate at the Cancún Airport. Aerostar information Aerostar records its financial information on accounting principles in United States (US GAAP) and in USD, a translation to Mexican pesos is performed and a reconciliation from US GAAP to IFRS is carried out. Aerostar reports its financial information in IFRS, for purposes of consolidating in the Company. The exchange rate used at 2019 and 2020 year end was Ps.18.86 and Ps.19.91 Mexican Pesos per Dollar, respectively. Relevant information about Aerostar and its significant non-controlling interest As of December 31, 2018, 2019 and 2020, the condensed financial information of Aerostar, where there is a significant non-controlling interest, is presented as follows: December, 31 2018 2019 2020 Condensed statement of financial position Cash and cash equivalents Ps. 868,095 Ps. 698,466 Ps. 804,634 Restricted cash and cash equivalents 47,332 165,622 5,055 Other current assets 175,479 133,992 566,031 Total current assets 1,090,906 998,080 1,375,720 Financial liabilities: Current liabilities (640,785) (672,943) (606,433) Working capital 450,121 325,137 769,287 Land, furniture and equipment 174,450 160,186 151,971 Intangible assets, airport concessions - Net 13,587,071 12,956,965 13,535,370 Other long term assets 544 16,759 32,578 Long term debt (7,282,268) (6,799,941) (7,171,278) Accounts payable to the Company (1,152,805) (372,798) (104,065) Other long term liabilities (21,609) (19,783) (19,864) Deferred income tax - Net (330,999) (371,984) (448,829) Shareholders’ equity Ps. 5,424,505 Ps. 5,894,541 Ps. 6,745,170 Year ended December, 31 2018 2019 2020 Condensed statements of comprehensive income Revenue Ps. 3,025,267 Ps. 3,306,149 Ps. 2,902,238 Operating cost and expenses (2,098,323) (2,270,055) (1,956,081) Other income 134,637 204,074 158,906 Comprehensive financial cost - Net (538,268) (485,037) (495,443) Deferred income tax (62,252) (55,781) (60,684) Net (loss) income for the year 461,061 699,350 548,936 Foreign currency translation (5,772) (229,314) (301,695) Total comprehensive income Ps. 455,289 Ps. 470,036 Ps. 247,241 Airplan information Airplan records and reports its financial information in IFRS as adopted in Colombia and their corresponding IFRIC issued by the IASB and in Colombian pesos. For purposes of consolidating Airplan in the Company, a translations to Mexican pesos is performed. The exchange rate used at 2019 and 2020 year end was Ps.173.63 and Ps.171.53 Colombian Peso per Mexican Peso, respectively. a. Subsidiaries Subsidiaries are all entities over which the Company has control. The Company controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are fully consolidated from the date on which control is transferred to the Company. They are deconsolidated from the date that control ceases. Intercompany transactions, balances, revenues and expenses due to transactions between the group companies were eliminated. The non-realized results were also eliminated. The subsidiaries’ accounting policies are consistent with the policies adopted by the Company. The Company uses the purchase method to recognize business acquisitions. The consideration for the acquisition of a subsidiary is determined based on the fair value of the net assets transferred, the liabilities assumed and the capital issued by the Company. The Company defines a business combination as a transaction in which it obtains control of a business, through which it has the power to govern and manage the relevant activities of the of assets and liabilities of said business with the purpose of providing return in the form of dividends, lower costs or other economic benefits directly to investors. The consideration transferred in the acquisition of a subsidiary is the fair value of the assets transferred, the liabilities incurred and the equity interests issued by the Company. The consideration transferred includes the fair value of any asset or liability that results from a contingent consideration agreement. The identifiable assets acquired, the liabilities and contingent liabilities assumed in a business combination are initially measured at their fair value on the date of acquisition. The Company recognizes any non-controlling interest in the acquired entity based on the proportional part of the non-controlling interest in the net identifiable assets of the acquired entity. Costs related to the acquisition are recognized as expenses in the consolidated statement of income as incurred. Goodwill is initially measured as the excess of the consideration paid and the fair value of the non-controlling interest in the acquired subsidiary over the fair value of the identifiable net assets and the liabilities acquired. If the consideration transferred is less than the fair value of the net assets of the acquired subsidiary in the case of a purchase at a bargain price, the difference is recognized directly in the consolidated statement of income. If the business combination is reached in stages, the book value at the date of acquisition of the participation previously held by the Company in the acquired entity, is remeasured at its fair value at the acquisition date. Any loss or gain resulting from such remeasurement is recognized in the results of the year. At the date of the measurement made by the management, a gain from business combinations was determined for Ps.7,029,200, which was reflected in the consolidated statement of comprehensive income. b. Changes in the interests of subsidiaries without loss of control Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions, which are transactions with shareholders in their capacity as owners. The difference between the fair value of the consideration paid and the interest acquired in the carrying value of the net assets of the subsidiary is recorded in stockholders’ equity. Gains or losses on the sale of non-controlling interests are also recorded in stockholders’ equity. c. Disposal of subsidiaries When the Company loses control over one entity, any retained interest in the entity is measured at fair value, recognizing the effect in income. Subsequently, the fair value is the initial carrying amount for the purpose of determining the retained interest as an associate, joint venture or financial asset, as appropriate. Additionally, the amounts previously recognized in Other Comprehensive Income (OCI) relating to those entities are canceled as though the Company had directly disposed of the related assets or liabilities. This means that the amounts previously recognized in OCI are reclassified to income for the period. d. Acquisition in stages The additional acquisition in joint venture accounted under the equity method is considered a business combination conducted in stages, which means that the fair value of interest previously acquired was also revalued. e. Joint Agreements Under IFRS 11 investments in joint arrangements are classified as either a joint operation or a joint venture depending on the contractual rights and obligations of each investor, rather than the legal structure of the joint arrangement. f. Joint ventures The participation in joint ventures is accounted for under the equity method, after being initially recognized at cost in the consolidated statement of financial position. On February 20, 2020, Cancún Airport entered into a contractual agreement with Aviation Investments, LLC, to set up a joint venture through a separate legal entity called Airport Development Group, LLC, agreeing to a 50% stake each. Initial investment amounted to USD500 (approximately Ps. 10,556). According to the agreement, decisions on the relevant activities of the entity require unanimous consent of both parties. The Company assessed the nature of the transaction and determined it was a joint venture. Joint ventures are recognized through the equity method. g. Under the equity method, investments are initially recognized at cost and are subsequently adjusted to recognize equity in post-acquisition results, as well as movements in other comprehensive income. Dividends received or receivable from joint ventures are recognized as a reduction in the amount of the investment. When the Company's share in the losses of a joint venture equals or exceeds its share in the joint venture (which includes any long-term interest that is in substance part of the Company's net investment in the joint venture), the Company does not recognize additional losses, unless it has incurred obligations or made payments on behalf of or on behalf of the joint venture. Unrealized income on transactions between Group Companies and their joint ventures are eliminated up to the amount of the Group's interest in the joint venture. Unrealized losses are also eliminated unless the transaction provides some evidence of impairment of the transferred asset. The accounting policies of the investments accounted for under the equity method have changed when necessary to ensure consistency with the policies adopted by the Company.
Translation of foreign currencies	17.3) Translation of foreign currencies Functional currency and reporting currency Items included in the consolidated financial statements of each of the companies of the Company are measured in the currency of the primary economic environment in which the entity operates, i.e., its “functional currency” which is also the reporting currency. The consolidated financial statements are presented in thousands of Mexican pesos, which is the Company’s reporting currency. 17.3.1) Consolidation of subsidiaries with a functional currency different from the reporting currency The results and financial position of Aerostar and Airplan (none of which handle a currency that corresponds to a hyperinflationary economy) expressed in a functional currency other than the reporting currency are converted to the reporting currency as follows: i. The assets and liabilities recognized in the consolidated statement of financial position are translated at the exchange rate on the balance sheet date. ii. The stockholders’ equity in the consolidated statement of financial position is translated using the historical exchange rates. iii. Income and expenses recognized in the consolidated statement of income are translated at the average exchange rate for each year (unless that average is not a reasonable approximation of the effect of translating the results derived from the exchange rates prevailing at transaction dates, in which case the Company uses the respective rates). iv. The resulting exchange differences are recognized within OCI. Goodwill and fair value adjustments that arise on the date of acquisition of a foreign operation to measure them at fair value are recognized as assets and liabilities of the foreign entity and are converted at the closing exchange rate. 17.3.2) Transactions in foreign currency and results from exchange fluctuations Operations carried out in foreign currency are recorded in the functional currency applying the exchange rates in effect at the transaction date or the exchange rate at the date of the valuation when the items are revalued. Exchange differences arising from fluctuations in the exchange rates between the transactions and settlement dates, or the consolidated statement of financial position date, are recognized in the consolidated comprehensive income statement.
Cash and cash equivalents	17.4) Cash and cash equivalents Cash and cash equivalents include cash, bank deposits and other highly liquid investments with low risk of changes in value with original maturities of three months or less. As of December 31, 2019 and 2020, cash and cash equivalents consisted primarily of peso and dollar denominated bank deposits and peso denominated investment bonds issued by the Mexican Federal Government.
Fiduciary rights	17.5) Fiduciary rights In accordance with the requirements of the concession agreement, Airplan was required to constitute a trust, with Fiduciaria Bancolombia as trustee, to administer the concession’s resources and to oversee the payment of the concession’s obligations by the concessionaire. Airplan transfers all of the gross income it receives and all of the debt and capital resources it obtains from the administrations of the concession.
Restricted cash and cash equivalents	17.6) Restricted cash and cash equivalents Restricted cash includes cash and cash equivalents that are restricted in terms of withdrawal or use. The nature of the restrictions includes restrictions imposed by financing agreements, federal agency funds related to capital expenditures, for example, for purposes of Aerostar, PFC and Airport Improvement Program (AIP) or other reserves (e.g., fund for promotion and support of air travel). Aerostar has restricted cash of Ps.26,849 and Ps. 5,055 at December 31, 2019 and 2020, respectively. Restricted cash and cash equivalents is presented as current if it is expected to be used within twelve months of the filing date. Any restricted fund beyond twelve months is recorded as non-current. Restricted cash is presented in the consolidated statements of cash flows within the investments activities since it is related to the investment in airport infrastructure.
Financial assets	17.7) Financial assets a. Classification - the Company classifies its financial assets into the following measurement categories: a) financial assets measured at amortized cost; and b) financial assets subsequently measured at fair value (either through other comprehensive income or through profit or loss). At present, the Company does not hold any financial assets. This classification depends on the business model of the Company to manage its financial instruments and the terms of the instrument's contractual cash flows. The Company reclassifies financial assets when, and only when, it changes its business model for the management of those assets. The Company’s financial assets are measured at amortized cost, since contractual terms comply with the SPPI (solely payment of principal and interest) requirement, and the Company’s business model is achieved by collecting cash flows. b. Measurement.- At initial recognition, financial assets at amortized cost are measured at fair value plus transaction costs that are directly attributable to their acquisition. Transaction costs of financial assets measured at fair value (through profit or loss or through other comprehensive income) are recognized in profit or loss as incurred. Gains and losses on assets measured at fair value are recorded in profit or loss or in other comprehensive income. Financial assets with embedded derivatives are considered as a whole if it is determined that the cash flows correspond exclusively to the payment of principal and interest. Accounts receivable are non-derivative financial assets with fixed or determinable payments that are not quoted in an active market. They are included as current assets, except for maturities greater than 12 months following the date of the Statement of Financial Position. These are classified as non-current assets. Loans and accounts receivable are initially recognized at fair value plus directly attributable transaction costs, and subsequently measured at amortized cost. c. Impairment of financial assets - Impairment losses are presented as net impairment losses within the operating result. Subsequent recoveries of previously canceled amounts are credited against the same line. For accounts receivable, the Company applies the simplified approach allowed by IFRS 9, which requires that the expected losses over the life of the instrument be recognized from the initial recognition of accounts receivable. See Note 6.
Leasing	17.8) Leasing 17.8.1) As lessor The leasing of terminal space made by the Company in its capacity as lessor at the terminals is documented by contracts with either fixed income or monthly fees based on the higher amount of a minimum monthly fee or a percentage of the lessee’s monthly revenue. Since the leased assets are part of the concession assets and thus do not belong to the Company, there is no transfer of the risks and rewards of ownership and therefore are classified as operating leases. Revenues from operating leases are recognized as non-aeronautical revenues on a straight line basis over the lease term. 17.8.2) As lessee Leases are recognized as right-of-use assets and lease liabilities on the date the leased assets are available for use by the Company. Right-of-use assets and liabilities arising from a lease under IFRS 16 “Leases” are initially measured at the present value. Lease liabilities include the present value, net of the following lease payments: i) fixed lease payments, less any lease incentive receivable; ii) variable lease payments that depend on an index or a rate, initially measured using the index or rate at the commencement date; and iii) the amounts that the Company expects to pay under residual value guarantees. Lease payments must be discounted at the rate implicit in the lease. In the case of the Company, the interest rate cannot be readily determined. Thus, the lessee’s incremental borrowing rate is used, which is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. To determine the borrowing incremental rate, the Company: · uses, whenever possible, recent third-party financing received by lessee as a starting point, adjusted to reflect changes in financing conditions since third-party financing was received; · uses other approaches, starting with a risk-free rate, adjusted for the credit risk of leases held that have not obtained recent third-party financing; and · applies specific adjustments to the lease, e.g. term, country, currency and guarantees. Lease payments are distributed among principal and interest expense. Interest expense is charged to profit or loss over the lease term to produce a constant periodic interest rate on the remaining liability for each period. Right-of-use assets are measured: · Lease initial measurement amount. · Any lease payment made on or before the commencement date less any lease incentive received. · Any initial direct cost. Right-of-use assets are generally depreciated on a straight-line basis over the shorter period of the asset useful life and the lease term, and the depreciation expense is recognized in the Statement of profit or loss. Payments of short-term leases and leases of low-price assets are expensed by applying the straight-line method. Short-term leases are leases with a term of 12 months or less. To determine the lease term, the Company considers all facts and circumstances creating an economic incentive to exercise an extension option. The reasonable certainty assessment is only reviewed when there is a significant event or a significant change in circumstances that affect such assessment and that are within lessee’s control. At December 31, 2020, there are no contracts regarding which there is a reasonable certainty to extend lease terms. Policy applied before January 1, 2019: As lessor The leasing of terminal space made by the Company in its capacity as lessor at the terminals is documented by contracts with either fixed income or monthly fees based on the higher amount of a minimum monthly fee or a percentage of the lessee’s monthly revenue. Since the leased assets are part of the concession assets and thus do not belong to the Company, there is no transfer of the risks and rewards of ownership and therefore are classified as operating leases. Revenues from operating leases are recognized as non-aeronautical revenues on a straight line basis over the lease term. As lessee Leases in which a significant portion of the risks and rewards of the leased property has not been transferred to the Company as lessee were classified as operating leases. Payments made under an operating lease (net of any incentive received from lessor) are charged to profit or loss according to the straight-line method over the life of the lease. Leases of property, plant and equipment in which Airplan has substantially all the risks and rewards of ownership are classified as financial leases. Financial leases are capitalized at the beginning of the lease to the minor between the fair value of the leased asset and the present value of the minimum lease payments. Each payment of a financial lease is distributed between the liability and the financial costs. The obligations of a financial lease, net of the financial burden, are presented as debts (financial obligations) in current or non-current depending on whether the payment due is less than 12 months. The financial costs are charged to the results during the lease period so that a constant periodic interest rate is obtained on the remaining balance of the liability for each period. Property, plant and equipment acquired under a financial lease are amortized in the shortest period between the useful life of the asset and the term of the lease.
Land, furniture and equipment	17.9) Land, furniture and equipment Furniture and equipment are recorded at cost less accumulated depreciation and impairment loss. The cost includes expenses directly attributable to the acquisition of those assets and all costs associated with placing the assets in the location and in the condition necessary for them to operate as intended by management. Land is recorded at cost and it is not depreciated. Depreciation of other items of plant and equipment is calculated on the straight-line method based on the residual values over their estimated useful lives. The useful lives from the date of acquisition are 10 years. The useful lives at the acquisition date of the furniture and equipment are as shown below: 2019 2020 Furniture equipment 10 a 20 % 10 to 20 % Machinery 10 a 20 % 10 to 20 % Computer equipment 20 a 33 % 20 to 33 % Transportation equipment 20 a 25 % 20 to 25 % Improvements to leased premises 10 % 10 % The residual values, useful life and depreciation method are reviewed and adjusted, if necessary, on an annual basis. 17.9.1) Land Land represents, mainly, a territorial extension for which the Company has an obligation of constructing 450 hotel rooms along with FONATUR in Huatulco which are recorded at its cost and are not subject to depreciation. See Note 15c and 21.
Intangible assets	17.10) Intangible assets 17.10.1) Concessions The airports that are part of the Company performed the analysis of the following criteria that must be taken into account to know if they are within the scope of IFRIC 12: a. The grantor controls or regulates what services the operator must provide with the infrastructure, to whom it must provide them at what price. · The grantor does not need to have full price control; it is sufficient that the price is regulated by the grantor, the contract or the regulator. · The grantor can control the price through a limit mechanism. · The price can vary from fixed price arrangements to those based on a formula up to a maximum price. b. The grantor controls, through ownership, the right of benefits or otherwise, any significant residual interest in the infrastructure at the end of the term of the agreement. Taking into consideration the foregoing, these criteria are applicable to each of the concessions that the Company has, which is why their measurement and determination will be considered within the scope of IFRIC 12. In addition, at the end of all the concessions, all assets become the property of the nation in which the concession is located. Within the scope of IFRIC 12, the respective assets can be classified as: · Financial assets: when the licensor establishes an unconditional right to receive cash flows and other financial assets independently of the use of the public service by the users. · Intangible assets: only when the licensor agreements do not establish a contractual right to receive cash flows and other financial assets from the licensor, independently of the use of the public service by the users. Airport concessions have been considered within the scope of IFRIC 12 as an intangible asset because they comply with the above provisions and no financial assets have been recognized in that regard. Mexico: Rights-to-use airport facilities and airport concessions include the acquisition of the nine airport concessions and the rights acquired. Amortization is computed using the straight-line method over the estimated useful life of the concessions, (original term of 50 years as of November 1, 1998, 28 years as of December 31, 2020). Aerostar: Aerostar’s airport concession, which includes the obligation to make certain capital expenditures in improvement projects, is considered an intangible asset and is recognized at cost less accumulated amortization and impairment losses. Amortization is calculated using the straight-line method during the term of the agreement (40 years); 33 years remaining as of December 31, 20120. Airplan: In the case of Airplan, the right granted by the Concession Contract No.8000011‑OK and Public Tender No. 10000001OL2010, respectively, is recorded as an intangible asset, through which the grantors assign to the Company the regulated and unregulated income corresponding to each of the airports subject to the concession. In turn, the costs per loan that are related to the works in execution are part of the intangible. The intangible asset resulting from the recognition and updating of the estimated income of the contract is amortized based on the proportion of the accumulated income of the contract and the total income. Amortization is recognized in the results of the period. The useful life for the amortization was determined as the duration of the concession and the amortization rate is calculated based on the percentage of execution of the revenues with respect to the total expected income of the financial model that the Company has. The concession remains in effect until the date on which any of the following events occur: (i) the regulated revenues generated are equal to expected regulated revenues, provided that the concession agreement has been in force for at least 24 years or (ii) the concession agreement has been in force for at least 40 years, regardless of whether the regulated revenues generated are equal to the expected revenues. If the regulated revenues generated are equal to the expected revenues before the end of the 24 year period, the concession agreement will remain in effect until the end of such period. Management considers such factors in determining the final year of the concession term, which is 2032 (in accordance with legal guidelines, the concession term may be extended until 2048 as long as the aforementioned requirements established by the grantor are met). Therefore, the concession will have a useful life until at least the year 2032, 12 years remain as of December 31, 2020. 17.10.2) Licenses and commercial direct operation (ODC, by its initials in Spanish) These items are recognized at their cost less the accrued amortization and any recognized impairment losses. They are amortized on a straight line basis using their estimated useful life, determined based on the expected future economic benefits, and are subject to testing when indication of impairment is identified. The estimated useful lives at December 31, 2020 are as follows: Licenses 28 years ODC 28 years Commercial Rights of Aerostar 32 years Commercial Rights of Airplan 12 years 17.10.3) Goodwill Goodwill represents the acquisition cost of a subsidiary in excess of the Company’s interest in the fair value of the identifiable net assets acquired, determined at the acquisition date, and it is not subject to amortization. Goodwill is shown separately in the consolidated statement of financial position and is recorded at cost less accumulated impairment losses, which are not reversed. Gains and losses on the disposal of an entity include the carrying amount of goodwill relating to the entity sold. 17.10.4) Intangible assets acquired as part of a business combination When an intangible asset is acquired as part of a business combination, it is recognized at fair value at acquisition date. Subsequently, intangible assets acquired in a business combination, such as commercial rights, are recognized at cost less the accumulated amortization and the accrued amount of impairment losses. See useful lives of these rights in Note 17.10.2.
Impairment of long-term non-financial assets	17.11) Impairment of long-term non-financial assets The long-term non-financial assets subject to amortization or depreciation are subject to annual impairment tests or more frequently if there are events or circumstances that indicate that they might be affected. Other assets are subject to impairment tests when events or circumstances arise that indicate that their book value might not be recovered. Impairment losses correspond to the amounts where the book value of the asset exceeds their recoverable amount. The recoverable amount of assets is the higher of the fair value of the asset less the costs incurred for its sale and value in use. For impairment assessment purposes, assets are grouped at the lowest levels at which they generate identifiable cash flows separately which are largely independent of the cash flows of other assets or the Company's assets (cash-generating units). Non-financial assets are assessed at every reporting date in order to identify potential reversals of such impairment.
Accounts payable	17.12) Accounts payable Accounts payable are liabilities with creditors for purchases of goods or services acquired during the regular course of the Company’s operations. When payment is expected over a period of one year or less from the closing date, they are presented under current liabilities. If the foregoing is not complied with, they are presented under non-current liabilities. Accounts payable are initially recognized at their fair value and are subsequently measured at amortized cost using the effective interest method.
Bank loans and long-term debt	17.13) Bank loans and long-term debt Loans from financial institutions are initially recognized at their fair value, net of transaction costs. Those funds are subsequently recorded at their amortized cost; any difference between the funds received (net of transaction costs) and the redemption value is recognized in the statement of income during the funding period using the effective interest method. 17.13.1) Refinancing costs When the contractual cash flows of a financial asset are renegotiated or otherwise modified and the renegotiation or modification does not result in derecognition of that financial asset, the Company will recalculate the gross carrying amount of the financial asset and will recognize a modification of profit or loss. The gross carrying amount of the financial asset will be recalculated as the present value of the renegotiated or modified contractual cash flows that are discounted at the original effective interest rate of the financial asset (or effective interest rate adjusted by credit for financial assets acquired or originated with credit originated assets) or, where applicable, the revised effective interest rate. All costs or commissions incurred adjust the carrying amount of the modified financial asset and are amortized over the remaining term of the modified financial asset. 17.13.2) Loan costs Costs of specific and general loans directly attributable to the construction of qualifying assets are capitalized during the period of construction and preparation of the asset for its use. Qualifying assets are those that require a substantial period to be ready and able to be used (usually greater than one year). Financial revenues obtained from temporary investments made with money coming from specific loans that will be used for the construction of qualifying assets are decreased of financial costs eligible for capitalization. The capitalization of costs for loans in foreign currency that generates interests and losses due to foreign exchange fluctuations, are only capitalized up to the amount of interest that would have been generated by loan in national currency, with similar conditions of time.
Derecognition of financial liabilities	17.14) Derecognition of financial liabilities The Company derecognizes its financial liabilities if, and only if, the obligations of the Company are met, are cancelled or if they expire.
Provisions	17.15) Provisions Liability provisions represent a present legal obligation or an assumed obligation as a result of past events, when the use of economic resources is likely in order to settle the obligation and when the amount can be reasonably estimated. Provisions are not recognized for future operating losses. Provisions are measured at the present value of expenses expected to cover the related obligation, using a pretax rate that reflects the actual considerations of the value of money market over time and the specific risks inherent in the obligation. The increase in the provision over time is recognized as an interest expense. When there are similar obligations, the likelihood of the outflow of economic resources for settling those obligations is determined considering them as a whole. In these cases, the provision thus estimated is recorded, provided the likelihood of the outflow of cash with respect to a specific item considered as a whole is remote.
Deferred IT, and tax on dividends	17.16) Deferred IT, and tax on dividends The expense for IT includes both the current tax and deferred taxes. Tax is recognized in the statement of income, except when it relates to items recognized directly in OCI or in stockholders’ equity in which case, the tax is also recognized in OCI items or directly in stockholders’ equity, respectively. Deferred IT were recorded based on the comprehensive method of liabilities, which consists of recognizing deferred taxes on all temporary differences between the book and tax values of assets and liabilities to be materialized in the future at the enacted or substantially enacted tax rates in effect at the consolidated financial statement date. See Note 13. Deferred tax assets are only recognized if future tax profits are expected to be incurred against which temporary differences can be offset. Deferred tax assets and liabilities from the temporary differences arising from the investments in subsidiaries and joint businesses are recognized, except when the Company controls the reversal period for such temporary differences and it is likely that the temporary differences will not be reverted in a near future. Deferred IT are offset when there is a legal right for each entity to offset current tax assets against current tax liabilities and when deferred IT assets and liabilities relate to the same tax authorities. The credits for IT incurred is computed based on tax laws approved in Mexico at the date of the consolidated statement of financial position. Current IT is made up of IT, which is recorded under income for the year in which they are incurred. The tax is based on taxable income. To determine the IT the applicable rate in Mexico for 2019 and 2020 was 30%, the applicable rate for Airplan, according to Colombian legislation for 2019 and 2020 was 33% and the applicable rate for Aerostar, in accordance with Puerto Rico law, for 2019 and 2020 was 10%. Aerostar and Airplan hold undistributed profits which, if paid as dividends, would require the beneficiaries to pay tax. There is a temporary taxable difference, but no deferred tax liability is recognized, as the Company as the controlling entity is capable of deciding the point at which the subsidiary should make distributions. It is not expected to distribute those benefits in the foreseeable future, because both companies would first have to pay off their bank or private debts before they can declare dividends.
Employee benefits	17.17) Employee benefits The present value of the defined benefit obligations is determined by discounting the estimated future cash flows using the interest rates of high-quality corporate bonds denominated in the same currency in which the benefits will be paid and that have expiration terms that are approximate the terms of the pension obligation. In those countries where there is no deep market for such bonds, interest rates on government bonds are used. The net interest cost is calculated by applying the discount rate to the net balance of the defined benefit obligation and the fair value of the plan assets. This cost is included in the expense for employee benefits in the consolidated statement of income. Gains and losses for remeasurements derived from experience adjustments and changes in actuarial assumptions are recognized in the period in which they occur directly in OCI. They are included in the accumulated results in the statement of changes in stockholders' equity and in the consolidated statement of financial position. Variations in the present value of the defined benefit obligation that result from modifications or reductions of the plan are recognized immediately in results as past service costs. Termination benefits Termination benefits are paid when the employment relationship ends before the normal retirement date or when an employee voluntarily accepts the termination in exchange for these benefits. The Group recognizes termination benefits on the first of the following dates: (a) it is committed to terminate the employment relationship of employees in accordance with a detailed formal plan without having the possibility of evading its obligation, and (b) when the entity recognizes restructuring costs in accordance with IAS 37 and involves payment of termination benefits. In the case of an offer that promotes voluntary termination, termination benefits are valued based on the expected number of employees accepting the offer. Benefits that mature 12 months after the reporting date are discounted to their present value. The charge to income for the years ended December 31, 2019 and 2020 was Ps.1,595 and Ps.2,382, respectively. See Note 4. Short-term obligations Salaries for wages and salaries, including non-monetary benefits and accumulated sick leave, which are expected to be fully settled within 12 months after the end of the period in which the employees provide the related service, are recognized in connection with the service of employees until the end of the period and are measured by the amounts that are expected to be paid when the liabilities are settled. Liabilities are presented as current obligations for employee benefits in the consolidated statement of financial position. Share in profits The Group recognizes a liability and an expense for profit sharing based on a calculation that takes into account the profit attributable to the shareholders of the Company after certain adjustments. The Group recognizes a provision when it is contractually bound or when there is a past practice that generates an implicit obligation.
Stockholders' equity	17.18) Stockholders’ equity Capital stock, capital reserves and retained earnings are expressed at their historical cost. The capital reserves consist of the legal reserve, the reserve to repurchase own shares, and the reserve to reflect the effect of translating foreign currency.
Basic and diluted earnings per share	17.19) Basic and diluted earnings per share Basic earnings per share were computed by dividing income available to the stockholders (Ps.5,465,822 and Ps.1,972,319) by the weighted average number of shares outstanding in 2019 and 2020. The number of shares outstanding for the periods from January 1 to December 31, 2019 and 2020 was 300 million. The basic earnings share for the year ended as of December 31, 2019 and 2020 was Ps.18.22 and Ps.6.5744, respectively, are expressed in pesos, the diluted earnings per share is equal to the basic earnings per share.
Financial reporting by segments	17.20) Financial reporting by segments The segment financial information is presented in a manner that is consistent with the internal reporting provided to the General Directors in charge of making operational decisions, allocating resources and assessing the performance of the operating segments. The Company determines and evaluates the performance of its airports on an individual basis, after allocating personnel costs and other costs of services, which are incurred by a Company’s subsidiary which hires some of the Company’s employees. The performance of these services is determined and assessed separately by management. All the airports provide substantially the same services to their clients. The performance of (Services) is determined and evaluated separately by management. All airports provide substantially the same services to their customers. Note 2 includes the financial information related to the Company’s different segments, which includes Cancún Airport and subsidiaries (Cancún Airport), showing separately, due to their importance, Aerostar, Airplan, Villahermosa Airport (Villahermosa), Mérida Airport (Mérida) and Servicios Aeroportuarios del Sureste (Servicios). The financial information of the remaining six airports, of RH Asur, S. A. de C. V. and of the holding company (including the investment of the Company in its subsidiaries) has been grouped and is included in the “Others” column. The elimination of the investment of the Company in its subsidiaries is included in the “Consolidation Adjustments” column. Resources are assigned to the segments based on the significance of each one to the Company’s operations. Transactions among operating segments are recorded at their fair value. For 2018, 2019 and 2020 the Company consolidates Aerostar line by line into the Company's finances. As of October 19, 2017, Airplan, S. A. consolidates as a subsidiary into the Company.
Revenue recognition	17.21) Revenue recognition The accounting policies for the Company's revenue from contracts with customers are explained in Note 3. With respect to the revenue presented in 2018, it is recognized and disclosed under the previous regulations that in this case is the International Accounting Standard (IAS) 18 - Revenue, as described in the following paragraphs. Revenue comprises the fair value of the consideration received or to be received for services rendered primarily in the ordinary course of the Company's business. Revenue is presented net of discounts, as well as the elimination of revenues for services between subsidiaries of the Company, as appropriate. The Company recognizes revenue when the amount of it can be valued with reliability, it is likely that the future economic benefits will flow to the entity and specific criteria have been met for each type of service of the Company. Revenues are obtained from aeronautical services (which are generally related to the use of the airport infrastructure by airlines and passengers), non-aeronautical services and constructions services.
Government grants	17.22) Government grants Government grants are recognized at their fair value when there is reasonable guarantee that the grant will be received, and the Company will comply with all the conditions set. Government grants associated with income are presented in the period’s income/loss as deductions of the related expenses. Grants received as compensation for expenses or to provide immediate financial support to the entity, with no related subsequent costs, are recognized in income/loss for the period in which they become payable. Government grants associated with assets are presented in the Statement of Financial Position as deductions of the carrying amount of related assets. They are recognized in income/loss throughout the life of the asset, which is amortized as a reduction of the related expense that the grant intends to offset. Government grants will be recognized in income/loss on a systematic basis throughout the periods in which the entity recognizes the related costs that the grant intends to offset as expenses. Note 4.1 discloses information on how the Company records government grants received as recovery of expenses.

Segment Information_ (Tables)

Segment Information: (Tables)	12 Months Ended
	Dec. 31, 2020
Segment information:
Schedule of information of operating segments	Year ended on Holding & Consolidation December, 31 2018 Cancún Aerostar (*) Airplan (**) Mérida Villahermosa Services Other adjustments Total Revenue from contracts with clients: Aeronautical revenue Ps. 4,428,546 Ps. 1,700,859 Ps. 1,276,506 Ps. 469,879 Ps. 201,502 — Ps. 865,618 — Ps. 8,942,910 Non-aeronautical revenue 3,831,325 964,404 396,834 117,277 59,822 Ps. 1,684,204 162,345 Ps. (1,684,654) 5,531,557 Revenue for construction services 205,834 360,004 312,375 4,831 15,604 — 37,126 — 935,774 Operating profit 5,206,971 882,381 239,893 297,468 113,038 605,860 433,358 — 7,778,969 Non-current assets 16,927,804 20,515,694 6,592,640 1,454,497 921,162 28,789,664 4,314,529 (29,335,081) 50,180,909 Total assets 19,002,035 21,607,145 6,905,451 1,857,958 1,241,529 29,525,000 5,377,784 (29,335,081) 56,181,821 Total liabilities 4,528,342 10,040,600 4,575,476 (25,257) 79,070 205,077 97,124 — 19,500,432 Improvements to assets under concession and acquisition of furniture and equipment in the period 364,795 772,009 415,042 7,116 12,671 — 64,692 — 1,636,325 Amortization and depreciation (455,003) (632,236) (452,364) (47,803) (30,147) (640) (142,548) — (1,760,741) Revenue recognized At point in time: Aeronautical revenue 3,846,184 1,245,320 1,200,941 426,070 180,407 — 788,406 — 7,687,328 Non-aeronautical revenue 621,850 621,850 Total 4,468,034 1,245,320 1,200,941 426,070 180,407 — 788,406 — 8,309,178 Over a period time: Aeronautical revenue 543,282 455,539 75,565 41,179 21,027 — 73,068 — 1,209,661 Non-aeronautical revenue 2,888,043 954,626 395,410 57,554 39,395 1,684,204 143,100 (1,684,654) 4,477,678 Revenue for construction services 205,834 360,004 312,375 4,831 15,604 — 37,126 — 935,774 Total Ps. 3,637,160 Ps. 1,770,169 Ps. 783,350 Ps. 103,564 Ps. 76,027 Ps. 1,684,204 Ps. 253,294 Ps. (1,684,654) Ps. 6,623,114 (*) Subsidiary located in Puerto Rico. (**) Subsidiary located in Colombia. Holding & Consolidation Year ended on December, 31 2019 Cancún Aerostar (*) Airplan (**) Mérida Villahermosa Services Other adjustments Total Revenue from contracts with clients: Aeronautical revenue Ps. 4,550,164 Ps. 1,870,428 Ps. 1,391,657 Ps. 579,727 Ps. 251,468 Ps. 953,531 Ps. 9,596,975 Non-aeronautical revenue 4,024,354 1,100,573 507,076 129,527 58,270 Ps. 1,748,731 169,120 Ps. (1,749,181) 5,988,470 Revenue for construction services 249,127 335,148 175,998 134,104 57,225 284,591 — 1,236,193 Operating profit 5,355,787 1,068,148 441,413 384,115 152,041 585,440 494,350 — 8,481,294 Non-current assets 17,533,430 19,454,107 5,836,603 1,780,146 1,003,909 30,598,817 4,628,280 (31,165,267) 49,670,025 Total assets 21,463,802 20,468,947 6,573,460 1,981,396 1,301,195 31,343,675 5,548,880 (31,165,474) 57,515,881 Total liabilities 5,383,343 8,807,985 4,161,205 (27,836) 78,227 244,152 97,834 (206) 18,744,704 Improvements to assets under concession and acquisition of furniture and equipment in the period 1,076,257 376,649 176,335 407,684 117,405 — 460,534 — 2,614,864 Amortization and depreciation (463,988) (659,873) (482,130) (48,371) (30,693) (7,194) (144,648) — (1,836,897) Revenue recognized At point in time: — Aeronautical revenue 3,933,693 1,369,066 1,322,648 530,736 229,217 — 870,622 — 8,255,982 Non-aeronautical revenue 662,485 233,106 — — — — — — 895,591 Total 4,596,178 1,602,172 1,322,648 530,736 229,217 — 870,622 — 9,151,573 Over a period time: Aeronautical revenue 616,471 501,362 69,009 48,991 22,251 82,909 1,340,993 Non-aeronautical revenue 3,361,869 867,467 507,076 129,527 58,270 1,748,731 169,120 (1,749,181) 5,092,879 Revenue for construction services 249,127 335,148 175,998 134,104 57,225 — 284,591 — 1,236,193 Total Ps. 4,227,467 Ps. 1,703,977 Ps. 752,083 Ps. 312,622 Ps. 137,746 Ps. 1,748,731 Ps. 536,620 Ps. (1,749,181) Ps. 7,670,065 (*) Subsidiary located in Puerto Rico. (**) Subsidiary located in Colombia. Year ended on Holding & Consolidation December, 31 2020 Cancún Aerostar (*) Airplan (**) Mérida Villahermosa Services Other adjustments Total Revenue from contracts with clients: Aeronautical revenue Ps. 2,218,230 Ps. 1,808,102 Ps. 488,981 Ps. 281,659 Ps. 132,751 — Ps. 482,695 — Ps. 5,412,418 Non-aeronautical revenue 2,252,157 740,450 296,961 90,431 42,103 Ps. 1,265,920 133,496 Ps. (1,266,291) 3,555,227 Revenue for construction services 1,855,747 353,686 6,918 728,718 154,155 — 557,862 — 3,657,086 Operating profit 2,079,965 923,518 (242,234) 95,167 40,020 327,631 52,109 — 3,276,176 Non-current assets 18,899,582 20,229,990 5,604,037 2,426,454 1,097,864 33,164,914 5,029,721 (33,757,400) 52,695,162 Total assets 22,406,388 21,630,906 6,090,371 2,913,304 1,345,826 33,834,595 5,947,221 (33,757,400) 60,411,211 Total liabilities 5,557,692 8,934,439 3,826,600 49,910 78,198 184,800 86,366 — 18,718,005 Improvements to assets under concession and acquisition of furniture and equipment in the period 1,720,381 400,500 6,918 570,940 118,736 — 511,085 — 3,328,560 Amortization and depreciation (487,333) (746,524) (461,563) (49,427) (31,897) (6,976) (151,046) — (1,934,766) Revenue recognized At point in time: Aeronautical revenue 1,888,076 953,715 459,655 254,210 120,688 — 439,320 — 4,115,664 Non-aeronautical revenue 319,367 142,135 — — — — — — 461,502 Total 2,207,443 1,095,850 459,655 254,210 120,688 — 439,320 — 4,577,166 Over a period time: Aeronautical revenue 330,154 854,387 29,326 27,449 12,063 — 43,375 — 1,296,754 Non-aeronautical revenue 1,932,790 598,315 296,961 90,431 42,103 1,265,920 133,496 (1,266,291) 3,093,725 Revenue for construction services 1,855,747 353,686 6,918 728,718 154,155 — 557,862 — 3,657,086 Total Ps. 4,118,691 Ps. 1,806,388 Ps. 333,205 Ps. 846,598 Ps. 208,321 Ps. 1,265,920 Ps. 734,733 Ps. (1,266,291) Ps. 8,047,565 (*) Subsidiary located in Puerto Rico (**) Subsidiary located in Colombia

Revenue from Contracts with C_2

Revenue from Contracts with Customers: (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue from Contracts with Customers:
Schedule of under unregulated services with income arising from contracts with clients	Year ended of December 31, 2018 2019 2020 Regulated services: Airport services for revenue from contracts with clients (*): Passengers fees Ps. 6,547,645 Ps. 7,005,018 Ps. 3,476,804 Landing fees 1,047,687 1,148,747 983,173 Platform 413,129 405,814 395,432 Seurity services 91,996 102,216 46,553 Baggage inspection fees 268,940 296,143 140,502 Passengers walkway 509,440 575,464 333,134 Passengers documentation counters 18,152 16,821 9,383 Other airport services 325,546 340,007 252,777 Ps. 9,222,535 Ps. 9,890,230 Ps. 5,637,758 Non regulated services: Non regulated services for revenue from contracts with customers: Retail stores Ps. 621,850 Ps. 895,591 Ps. 461,502 Access fees on non permanent ground transportation 57,885 63,159 29,967 Car parking and related Access fees 298,536 319,200 171,193 Other services 151,952 151,596 122,751 1,130,223 1,429,546 785,413 Commercial services 4,121,709 4,265,669 2,544,474 Total non regulated services (**) 5,251,932 5,695,215 3,329,887 Construction services 935,774 1,236,193 3,657,086 Total Ps. 15,410,241 Ps. 16,821,638 Ps. 12,624,731 (*) For 2018, 2019 and 2020, this amount includes Mexico regulated income of Ps.6,245,170, Ps.6,628,146 and Ps.3,340,674, Aerostar regulated income of Ps.1,700,859, Ps.1,870,427 and Ps.1,808,102, Airplan regulated income of Ps.1,276,506, Ps.1,391,657 and Ps.488,981, respectively. (**) This line item in the consolidated statement of income (non-aeronautical services) includes complementary and airport services totaling Ps.279,625, Ps.293,256 and Ps.225,340 for the 2018, 2019 and 2020 periods, respectively.
Schedule of under non-regulated services with revenue arising from contracts with clients	Year ended of December 31, 2018 2019 2020 Commercial revenues: Duty free shops Ps. 1,861,116 Ps. 1,785,508 Ps. 991,833 Food and beverage 738,371 820,001 449,340 Advertising revenues 161,214 187,192 92,683 Car rental companies 611,864 673,969 485,725 Banking and currency exchange servcies 119,855 115,927 72,563 Teleservices 14,139 16,038 15,174 Ground transportations 76,106 98,033 49,721 Other services 539,044 569,001 387,435 Total commercial revenues Ps. 4,121,709 Ps. 4,265,669 Ps. 2,544,474
Schedule of domestic and international passenger traffic	The follows table sets the domestic and international passenger traffic for the years, 2019 and 2020: Year ended of December 31, 2019 2020 Domestic passenger traffic: Mexico 16,684 9,246 Puerto Rico 8,456 4,548 Colombia 10,231 3,625 Total domestic passengers 35,371 17,419 International passenger traffic: Mexico 17,478 7,283 Puerto Rico 992 298 Colombia 1,821 590 Total international passengers 20,291 8,171 Total passengers 55,662 25,590
Schedule of effects of the decrease in passenger traffic as a result of COVID-19 on revenue by country are shown below, without considering construction revenue	Changed % Year ended of December 31, compared to 2019 2019 2020 Aeronautical revenue Mexico Ps. 6,334,890 Ps. 3,115,335 (50.82) Aerostar 1,870,428 1,808,102 (3.33) Airplan 1,391,657 488,981 (64.86) Total aeronautical revenue Ps. 9,596,975 Ps. 5,412,418 (43.60) Non-aeronautical revenue Mexico 4,380,821 2,517,816 (42.53) Aerostar 1,100,573 740,450 (32.72) Airplan 507,076 296,961 (41.44) Total non-aeronautical revenue Ps. 5,988,470 Ps. 3,555,227 (40.63) Total without construction revenue Ps. 15,585,445 Ps. 8,967,645 (42.46)
Schedule of commercial contracts of minimum rent	For the years that will end December 31: 2021 Ps. 2,515,572 2022 2,315,111 2023 2,184,496 2024 1,943,444 2025 1,857,885 2026 to 2028 2,380,113

Costs and expenses by nature_ (

Costs and expenses by nature: (Tables)	12 Months Ended
	Dec. 31, 2020
Costs and expenses by nature:
Schedule of general and administrative expense	January to December 31, 2018 2019 2020 Short term benefits Ps. 1,118,926 Ps. 1,199,217 Ps. 1,039,883 Electric power 458,827 474,719 382,026 Maintenance and conservation 673,603 699,557 447,884 Professional fees 306,169 308,740 251,621 Insurance and bonds 200,477 225,252 127,750 Surveillance services 310,065 325,613 275,206 Cleaning services 229,003 232,219 207,599 Technical assistance (Note 15.4) 386,249 404,086 175,615 Right of use of assets under concession (DUAC) (1) 898,253 986,850 535,379 Amortization and depreciation of intangible assets, furniture and equipment 1,760,741 1,836,897 1,934,766 Consumption of commercial items 300,845 323,899 169,298 Construction services (Note 3.1.3) 935,774 1,236,193 3,657,086 Termination benefits (Note 18.17) 1,595 1,922 2,382 Employees’ statutory profit sharing 8,052 10,250 3,115 Impairment of accounts receivable (Note 6) 6,241 12,127 154,417 Other 171,089 267,521 143,409 Total aeronautical and non-aeronautical services costs, costs of construction services and administrative expenses Ps. 7,765,909 Ps. 8,545,062 Ps. 9,507,436 (1) As of December 31, 2018, 2019 and 2020, Ps.458,290, Ps.484,402 and Ps.254,337, respectively, correspond to the consideration for the concessions in Mexico, Ps.312,244, Ps.361,029 and Ps.149,602 correspond to the consideration of the Airplan concession at 19% of gross revenues from the period October 19 to December 31, 2018, from the year 2019 and 2020, respectively, and Ps.127,719, Ps.141,419 and Ps.131,440, for the consideration of the Aerostar concession at 5% of the airport’s gross receipts from May 31, to December 31, 2018, as of December 31, 2019 from the year 2019 and 2020, respectively.

Cash and cash equivalents_ (Tab

Cash and cash equivalents: (Tables)	12 Months Ended
	Dec. 31, 2020
Cash and cash equivalents:
Schedule of cash and cash equivalents	December 31, 2019 2020 Cash and cash held at banks Ps. 3,642,037 Ps. 3,514,293 Short term investments 2,550,642 1,678,335 Total cash and cash equivalents Ps. 6,192,679 Ps. 5,192,628

Accounts receivable - Net_ (Tab

Accounts receivable - Net: (Tables)	12 Months Ended
	Dec. 31, 2020
Accounts receivable - Net:
Schedule of accounts receivable - net	December 31, 2019 2020 Clients Ps. 1,195,559 Ps. 1,458,653 Less: impairment provision (191,766) (346,183) 1,003,793 1,112,470 Notes receivable from clients 245,757 Total accounts receivable Ps. 1,003,793 Ps. 1,358,227
Schedule of maturity analysis of past due accounts receivable and movements in impairment provision	Provision for impairment at January 1,2019 Ps. 179,639 Application, net of Mexico's estimate during the period (369) Application, net of Aerostar's estimate during the period (5,585) Airplan's provision impairment 18,081 Provision for impairment at December 31,2019 Ps. 191,766 Application, net of Mexico's estimate during the period Ps. 70,470 Application, net of Aerostar's estimate during the period 50,842 Airplan's provision impairment 33,105 Provision for impairment at December 31,2020 Ps. 346,183
Schedule of provision for losses	More than Due to expire 1 to 90 91 to 180 181 to 365 365 Expected loss rate 2019: Mexico % 0.02 % 0.02 % 100 % 100 % Aerostar 1.00 % 2.5% - 5.0 % 15.00 % 50.00 % 100 % Airplan 0.83 % 0.83 % 0.83 % 100 % 100 % Due to More than Expected loss rate 2020: expire 1 to 90 91 to 180 181 to 365 365 Mexico 0.00 % 0.02 % 19.20 % 100 % 100 % Aerostar 5.40 % 5.10 % 43.70 % 88 % 100 % Airplan 0.83 % 0.70 % 0.83 % 100 % 100 % More Total estimate Due to expire 1 to 90 91 to 180 181 to 365 than 365 12/31/2019 At December 31, 2019 Mexico’s accounts receivables — Ps. 1,012 Ps. 1,733 Ps. 126 Ps. 128,930 — Mexico’s provision impairment 128,930 Ps. 128,930 Aerostar’s account receivables Ps. 159,796 97,697 2,176 712 31,236 — Aerostar’s provision impairment 1,599 3,611 544 499 31,236 37,489 Airplan’s accounts receivables — 114,858 52,410 15,357 8,602 — Airplan’s provision impairment — 953 435 15,357 8,602 25,347 Total estimate Ps. 191,766 More Total estimate Due to expire 1 to 90 91 to 180 181 to 365 than 365 12/31/2020 At December 31, 2020 Mexico’s accounts receivables Ps. 474,854 Ps. 59,819 Ps. 14,292 Ps. 66,816 Ps. 129,056 — Mexico’s provision impairment 784 2,744 66,816 129,056 Ps. 199,400 Aerostar’s account receivables 444,515 60,421 3,702 4,896 55,360 — Aerostar’s provision impairment 23,984 3,084 1,619 4,284 55,360 88,331 Airplan’s accounts receivables 73,865 1,610 37,214 32,233 — Airplan’s provision impairment 516 110 25,593 32,233 58,452 Total estimate Ps. 346,183

Land, furniture and equipment_2

Land, furniture and equipment - Net: (Tables)	12 Months Ended
	Dec. 31, 2020
Land, furniture and equipment - Net:
Schedule of land, furniture and equipment, net	Foreign currency 1/1/2019 translation Additions Disposals transfers 12/31/2019 Land Ps. 302,323 Ps. 302,323 Furniture & equipment 83,466 Ps. (270) Ps. 27,424 110,620 Machinery & equipment 80,511 (3,869) 46,571 Ps. (16,370) 106,843 Computer equipment 45,812 980 6,181 52,973 Transport equipment 22,064 (1,295) 9,549 30,318 Improvements to leased premises 60,640 5,040 4,615 (11,137) 59,158 Accumulated depreciation (104,478) 1,643 (66,284) 27,507 (141,612) 490,338 2,229 28,056 — 520,623 Equipment in transit 68,142 (377) (67,765) — Ps. 558,480 Ps. 1,852 Ps. 28,056 Ps. (67,765) Ps. 520,623 Foreign currency 1/1/2020 translation Additions Disposals transfers 12/31/2020 Land Ps. 302,323 — — — Ps. 302,323 Furniture & equipment 110,620 Ps. 515 Ps. 5,927 — 117,062 Machinery & equipment 106,843 4,013 32,762 — 143,618 Computer equipment 52,973 931 17,667 — 71,571 Transport equipment 30,318 1,420 1,531 — 33,269 Improvements to leased premises 59,158 569 3,723 — 63,450 Accumulated depreciation (141,612) (401) (84,895) — (226,908) Ps. 520,623 Ps. 7,047 Ps. (23,285) — Ps. 504,385

Intangible assets, airport co_2

Intangible assets, airport concessions and goodwill - Net: (Tables)	12 Months Ended
	Dec. 31, 2020
Intangible assets, airport concessions and goodwill - Net:
Schedule of movements of intangible assets of airport concessions	Foreign currency 1/1/2019 translation Additions (*) Transfers 12/31/2019 Concessions (Regulated Activity) Ps. 49,961,253 Ps. (961,446) Ps. 591,315 Ps. 995,514 Ps. 50,586,636 Contracts assets 671,496 1,236,196 (929,632) 978,060 Contractor advance 762,578 (65,882) 696,696 Licences and ODC 249,671 30,126 279,797 Commercial Right’s (Unregulated Activity) 6,531,631 (381,902) 6,149,729 Goodwill 2,567,365 — 2,567,365 Accumulated amortization (10,395,094) 33,462 (1,770,613) (12,132,245) Ps. 49,586,322 Ps. (1,309,886) Ps. 849,602 — Ps. 49,126,038 Foreign currency 1/1/2020 translation Additions (**) Transfers 12/31/2020 Concessions (Regulated Activity) Ps. 50,586,636 Ps. 1,059,370 Ps. 107,144 Ps. 932,376 Ps. 52,685,526 Contracts assets 978,060 1,295 3,036,386 (311,676) 3,704,065 Contractor advance 696,696 — 355,809 (620,700) 431,805 Licences and ODC 279,797 84,930 364,727 Commercial Right’s (Unregulated Activity) 6,149,729 340,507 6,490,236 Goodwill 2,567,365 — 2,567,365 Accumulated amortization (12,132,245) (79,297) (1,849,871) (14,061,413) Ps. 49,126,038 Ps. 1,321,875 Ps. 1,734,398 Ps. 52,182,311 (*) The most significant additions made in 2019 are a) beginning of the first stage of extension of the Mérida Airport terminal; expansion of runways and taxiways in Huatulco Airport; land for the expansion works of terminal four of the Cancún Airport, and b) last stage of the construction of the building of the cargo terminal of the Rionegro Airport and completion of the construction of the modules connecting the terminal building with the parking lot at Rionegro Airport. (**) The most significant additions made in 2020 are a) the expansion of the terminal building, commercial platform, runways, taxiways, and roads at the Mérida Airport; b) the commencement of works for the expansion of Terminal 3 and 4 and the expansion of runways, taxiways, platform and roads at Cancún Airport and c) installation of a new system to screen checked baggage in an expanded section of the airport, expansion of the platform commercial runways and taxiways at Huatulco Airport.
Schedule of allocation of goodwill for each operating segment	December 31, 2019 2020 Aerostar Ps. 1,057,651 Ps. 1,057,651 Airplan 1,509,714 1,509,714 Ps. 2,567,365 Ps. 2,567,365
Schedule of CGU with a significant amount of goodwill	2019 Airplan Aerostar Discount rate 9.66 % 9.60 % Operating costs and expenses annual average 5.25 % 4.45 % Departing passenger growth rate 6.70 % 2.50 % 2020 Mexico Airplan Aerostar Discount rate 12.20 % 6.92 % 9.54 % Operating costs and expenses annual average 3.00 % 3.00 % 3.00 % Passenger growth rate in the recovery period of each CGU. 34.80 % 52.16 % 19.37 % Recovery period (years) 5 3 5 Average growth rate of passengers in the period after the recovery of passengers for each CGU 2.30 % 4.90 % 1.70 % Hierarchy level of the fair value of the recoverable of the CGU 3 3 3

Accounts payable and accrued _2

Accounts payable and accrued expenses: (Tables)	12 Months Ended
	Dec. 31, 2020
Accounts payable and accrued expenses:
Schedule of accounts payable and accrued expenses	December 31, 2019 2020 Suppliers Ps. 245,100 Ps. 353,885 Taxes payable 175,573 57,174 Use rights of assets under concession 269,916 5,070 Accounts payable to related parties (Note 14.1) 97,312 53,256 Lease payable (Note 7.1) 20,422 17,236 Salaries payable 149,452 128,105 Sundry creditors for services provided 803,746 640,068 Accounts payable to contractors 37,809 343,610 Total Ps. 1,799,330 Ps. 1,598,404

Bank loans_ (Tables)

Bank loans: (Tables)	12 Months Ended
	Dec. 31, 2020
Bank loans:
Schedule of bank loans	Credit line balance Credit line Principal Commissions and Term Fair Bank at 12/31/2019 used in pesos amortization interests - Net Short Long value (*) Santander, S.A. Ps. 2,000,000 Ps. (7,933) Ps. 1,992,067 Ps. 2,044,664 BBVA Bancomer, S. A. 2,000,000 401 Ps. 23,998 1,976,403 2,045,386 Total México Ps. 4,000,000 Ps. (7,532) Ps. 23,998 Ps. 3,968,470 Ps. 4,090,050 Bancolombia, S.A. COP 137,250,000 Ps. 1,041,415 Ps. (51,834) Ps. 6,474 Ps. 73,067 Ps. 922,987 Ps. 894,131 Corpbanca Colombia, S.A. 93,330,000 708,472 (35,247) 5,503 49,657 629,071 608,009 Banco Davivienda, S.A. 82,349,995 624,983 (31,101) 4,332 43,799 554,416 536,479 Banco de Bogotá, S.A. 33,854,211 256,744 (12,786) 1,106 18,014 227,049 220,552 Banco de Occidente, S.A. 33,854,228 256,742 (12,786) 1,098 18,014 227,040 220,552 Banco Popular, S.A. 7,319,029 55,309 (2,765) (348) 4,023 48,174 47,687 Banco AV Villas, S.A. 7,320,000 55,566 (2,764) 432 3,895 49,339 47,687 Servicios Financieros, S.A. 7,320,000 55,315 (2,764) (612) 3,768 48,171 47,687 Total Airplan COP 402,597,463 Ps. 3,054,546 Ps. (152,047) Ps. 17,985 Ps. 214,237 Ps. 2,706,247 Ps. 2,622,784 Ps. 7,054,546 Ps. (152,047) Ps. 10,453 Ps. 238,235 Ps. 6,674,717 Ps. 6,712,834 Credit line balance Credit line Principal Commissions and Term Fair Bank at 12/31/2020 used in pesos amortization interests - Net Short Long value(*) Santander, S. A. Ps. 2,000,000 Ps. (5,133) Ps. 1,994,867 Ps. 1,989,862 BBVA Bancomer, S. A. 1,980,000 Ps. (20,000) 16,343 Ps. 322,209 1,654,134 1,957,415 Total México — Ps. 3,980,000 Ps. (20,000) Ps. 11,210 Ps. 322,209 Ps. 3,649,001 Ps. 3,947,277 Banco Popular de Puerto Rico USD 10,000 Ps. 199,087 Ps. 15 Ps. 199,102 Ps. 199,188 Bancolombia, S. A. COP 125,250,000 984,985 (69,959) 9,410 81,758 842,678 752,072 Corpbanca Colombia, S. A. 85,170,000 670,111 (47,572) 7,511 55,565 574,485 511,409 Banco Davivienda, S. A. 75,149,985 591,130 (41,975) 6,098 49,012 506,241 451,243 Banco de Bogotá, S. A. 30,894,211 242,820 (17,256) 1,893 20,227 207,230 185,511 Banco de Occidente, S. A. 30,894,228 242,818 (17,256) 1,758 20,100 207,220 185,511 Banco Popular, S. A. 6,679,029 52,292 (3,731) (213) 4,475 43,873 40,110 Banco AV Villas, S. A. 6,680,000 52,558 (3,731) 589 4,358 45,058 40,110 Servicios Financieros, S. A. 6,680,000 52,297 (3,731) (467) 4,230 43,869 40,110 Bancolombia, S. A. 8,128,400 67,697 (20,309) 91 47,479 — 47,957 Total Airplan COP 375,525,853 Ps. 2,956,708 Ps. (225,520) Ps. 26,670 Ps. 287,204 Ps. 2,470,654 Ps. 2,254,033 Ps. 7,135,795 Ps. (245,520) Ps. 37,895 Ps. 808,515 Ps. 6,119,655 Ps. 6,400,498 (*) The following variables were used to determine the fair values of the loans at December 31, 2019 and 2020. Amount Entity (COP) Bancolombia, S. A. COP. 150,000,000 Corpbanca Colombia, S. A. 102,000,000 Banco Davivienda, S. A. 90,000,000 Banco de Bogotá, S. A. 37,000,000 Banco de Occidente, S. A. 37,000,000 Banco Popular, S. A. 8,000,000 Banco AV Villas, S. A. 8,000,000 Servicios Financieros, S. A. 8,000,000 COP. 440,000,000

Long-term debt_ (Tables)

Long-term debt: (Tables)	12 Months Ended
	Dec. 31, 2020
Long-term debt:
Schedule of long-term debt	Performance 2.39 % Spread credit (bps) +336 Coupon 5.75 % Performance 6.75 % At December 31, 2019 the integration of the debt is shown as follows: Credit line Interest Credit line Interest Term Fair used in thousand USD in USD in pesos in pesos Short Long value Loan $ 400,000 $ 10,152 Ps. 6,843,134 Ps. (43,193) Ps. 311,372 Ps. 6,488,569 Ps. 7,082,022 At December 31, 2020 the integration of the debt is shown as follows: Credit line Interest Credit line Interest Term Fair used in thousand USD in USD in pesos in pesos Short Long value Loan $ 400,000 $ 10,577 Ps. 7,011,281 Ps. (39,105) Ps. 330,235 Ps. 6,641,941 Ps. 7,697,476

Stockholders' equity_ (Tables)

Stockholders' equity: (Tables)	12 Months Ended
	Dec. 31, 2020
Stockholders' equity:
Stockholders' equity:	Capital stock as of Total shares December 31, Description 2019 2020 2019 2020 “B” Series 277,050,000 277,050,000 Ps. 7,173,079 Ps. 7,173,079 “BB” Series 22,950,000 22,950,000 594,197 594,197 Total 300,000,000 300,000,000 Ps. 7,767,276 Ps. 7,767,276

Income tax incurred and defer_2

Income tax incurred and deferred: (Tables)	12 Months Ended
	Dec. 31, 2020
Income tax incurred and deferred:
Schedule of IT provision - Mexico	December 31, 2018 2019 2020 Mexico: Current IT Ps. 1,766,083 Ps. 1,864,384 Ps. 631,471 Deferred IT 13,116 57,023 117,924 IT provision Mexico Ps. 1,779,199 Ps. 1,921,407 Ps. 749,395 Aerostar: Current Income Tax 433 (16) Deferred Income Tax 33,879 38,146 42,546 IT provision Aerostar Ps. 33,879 Ps. 38,579 Ps. 42,530 Airplan: Current IT (20,098) 110,910 2,916 Deferred IT 2,981 (92,794) (65,686) IT provision Airplan Ps. (17,117) Ps. 18,116 Ps. (62,770) Total IT provision Ps. 1,795,961 Ps. 1,978,102 Ps. 729,155
Schedule of reconciliation between statutory and effective income tax rates	December 31, 2018 2019 2020 Consolidated income before provision for IT Ps. 6,916,699 Ps. 7,661,741 Ps. 2,855,692 Plus (less): Net (loss) income before taxes of Airplan and Aerostar (297,179) (843,352) (65,672) Net (loss) income before taxes of subsidiaries in Mexico not subject to IT (89,685) (100,793) 4,337 Income before provisions for income taxes 6,529,835 6,717,596 2,794,357 Statutory IT rate 30 % 30 % 30 % IT that would result from applying the IT rate to book profit before income taxes 1,958,951 2,015,279 838,307 Non-deductible items and other permanent differences 15,126 11,941 10,496 Annual adjustment for tax inflation 12,101 (12,783) (18,958) Accounting disconnect inflation (189,237) (93,030) (80,450) Effect by difference in rate of IT Aerostar 33,879 38,579 42,530 Effect by difference in rate of IT Airplan (17,117) 18,116 (62,770) Other non-taxable earnings (17,742) — — IT provision Ps. 1,795,961 Ps. 1,978,102 Ps. 729,155 Effective IT rate 28 % 29 % 26 %
Schedule of principal temporary differences with respect to deferred tax	Period ended on December 31, 2019 2020 Deferred income tax asset: Temporary liabilities Ps. 48,079 Ps. 31,019 Fair value of long-term debt 175,137 162,574 Allowance for doubtful accounts 34,296 66,609 257,512 260,202 Deferred income tax payable: Fixed and intangible assets (*) (2,974,108) (3,198,632) Temporary assets (287,172) (226,106) Amortization of expenses (816) (609) (3,262,096) (3,425,347) Deferred income tax liability - Net Ps. (3,004,584) Ps. (3,165,145) (*) Includes Ps.942,519 and Ps.1,032,799 from Aerostar from the periods 2019 and 2020, and Ps.695,212 and Ps.647,571 from Airplan in 2019 and 2020.
Schedule of net movements of the deferred tax asset and liability	Impairment provision Foreign of loan Concession Currency portfolio Assets Conversion Others Total Balances as of December 31, 2018 Ps. (36,874) Ps. 3,079,749 Ps. 60,008 Ps. (21,215) Ps. 3,081,668 Revaluation effect by conversion Airplan and Aerostar — — (102,370) 22,911 (79,459) Consolidated income statement: Airplan 2,467 (161,556) (184) 66,479 (92,794) Aerostar 38,414 (268) 38,146 México 111 60,315 (3,403) 57,023 2,578 (62,827) (452) 63,076 2,375 Balances as of December 31, 2019 (34,296) 3,016,922 (42,814) 64,772 3,004,584 IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar — — 141,236 (75,456) 65,777 Consolidated income statement: Airplan (11,390) (73,994) (461) 20,159 (65,686) Aerostar 43,767 (1,221) — 42,546 México (20,923) 115,197 — 23,650 117,924 (32,313) 84,970 (1,682) 43,809 94,784 Balances as of December 31, 2020 Ps. (66,609) Ps. 3,101,892 Ps. 96,740 Ps. 33,125 Ps. 3,165,145
Schedule of Aerostar tax loss carryforwards	Year of Year of loss Amount expiration 2012 Ps. 7,085 2022 2013 37,256 2023 2014 25,545 2024 2015 28,520 2025 2016 27,745 2026 2017 22,248 2027 2018 10,600 2028 2019 1,975 2029 2020 30,725 2030 Total Ps. 191,699
Schedule of Temporal differences not recognized	December 31, 2019 2020 Undistributed utilities Ps. 3,424,951 Ps. 3,200,543 Tax rate 30 % 30 % Deferred income tax liabilities unrecognized with the previous temporary differences Ps. 1,027,485 Ps. 960,163

Balances and transactions wit_2

Balances and transactions with related parties: (Tables)	12 Months Ended
	Dec. 31, 2020
Balances and transactions with related parties:
Schedule of balances receivable and payable	December 31, 2019 2020 Accounts receivable: Autobuses Golfo Pacífico, S. A. de C. V. (Shareholder/services) Ps. 284 Ps. 197 Ps. 284 Ps. 197 Accounts payable and accumulated expenses (Note 10):(*) Inversiones y Técnicas Aeroportuarias, S. A. de C. V. (Shareholder/technical assistance) Ps. (96,769) Ps. (53,257) Autobuses de Oriente ADO, S. A. de C. V. (Shareholder/technical assistance) (127) Lava Tap de Chiapas, S. A. de C. V. (Key management personnel/services) (543) (411) (97,312) (53,795) Net Ps. $ (97,028) Ps. $ (53,598) (*) These are accounts with terms of less than one year under similar market conditions.
Schedule of transactions with related parties	December 31, 2018 2019 2020 Commercial income: Autobuses de Oriente, S. A. de C. V. (Stockholder) Ps. 14,455 Ps. 14,349 Ps. 7,968 Autobuses Golfo Pacífico, S. A. de C. V. (Stockholder) 7,014 7,290 4,862 Coordinados de México de Oriente, S. A. de C. V. (Stockholder) 150 157 164 Expenses: Stockholders: Technical assistance (Note 15.4) Ps. (386,249) Ps. (404,086) Ps. (175,615) Related parties: Administrative services Leasing Ps. (5,232) Ps. (5,340) Ps. (6,061) Cleaning services (10,854) (11,544) (11,848)
Schedule of compensation of key personnel	December 31, 2018 2019 2020 Short term salaries and other benefits paid to key personnel (Note 18.17) (*) Ps. 119,202 Ps. 109,747 Ps. 137,272 Fees paid to the Board of Directors and Committees 8,695 9,146 8,571 (*) In 2018, 2019 and 2020, includes costs of Ps.53,268, Ps.41,411 and Ps.66,083; and Ps.16,350, Ps.17,381 and Ps.15,650, respectively for key personnel of directors of Aerostar and Airplan.

Commitments and contingencies_

Commitments and contingencies: (Table)	12 Months Ended
	Dec. 31, 2020
Commitments and contingencies:
Schedule of future payments	Up to one year Ps. 5,626 Between one and three years 19,222 Total Ps. 24,848
Schedule or investment commitments	Period Amount 2021 Ps. 5,460,586 2022 1,907,832 2023 892,356 Ps. 8,260,774 (1) (1) Figures in thousand pesos adjusted at December 31, 2020 based on the Construction Price Index (IPCO) in the terms of the MDP.

Summary of the main accountin_3

Summary of the main accounting policies: (Tables)	12 Months Ended
	Dec. 31, 2020
Summary of the main accounting policies:
Schedule of consolidated subsidiaries	Shareholding percentage (%) Main activity Aeropuerto de Cancún, S. A. de C. V. 100 % Airport services Aeropuerto de Cozumel, S. A. de C. V. 100 % Airport services Aeropuerto de Mérida, S. A. de C. V. 100 % Airport services Aeropuerto de Huatulco, S. A. de C. V. 100 % Airport services Aeropuerto de Oaxaca, S. A. de C. V. 100 % Airport services Aeropuerto de Veracruz, S. A. de C. V. 100 % Airport services Aeropuerto de Villahermosa, S. A. de C. V. 100 % Airport services Aeropuerto de Tapachula, S. A. de C. V. 100 % Airport services Aeropuerto de Minatitlán, S. A. de C. V. 100 % Airport services Cancun Airport Services, S. A. de C. V. (*) 100 % Airport services Aerostar Airport Holdings, LLC 60 % Airport services Sociedad Operadora de Aeropuertos Centro Norte, S.A. 100 % Airport services RH Asur, S. A. de C. V. 100 % Administrative services Servicios Aeroportuarios del Sureste, S. A. de C. V. 100 % Administrative services Asur FBO, S. A. de C. V. (*) 100 % Administrative services Caribbean Logistics, S. A. de C. V. (*) 100 % Cargo services Cargo RF, S. A. de C. V. (*) 100 % Cargo services (*) These subsidiaries sub-consolidate at the Cancún Airport.
Schedule of condensed financial information of Aerostar	December, 31 2018 2019 2020 Condensed statement of financial position Cash and cash equivalents Ps. 868,095 Ps. 698,466 Ps. 804,634 Restricted cash and cash equivalents 47,332 165,622 5,055 Other current assets 175,479 133,992 566,031 Total current assets 1,090,906 998,080 1,375,720 Financial liabilities: Current liabilities (640,785) (672,943) (606,433) Working capital 450,121 325,137 769,287 Land, furniture and equipment 174,450 160,186 151,971 Intangible assets, airport concessions - Net 13,587,071 12,956,965 13,535,370 Other long term assets 544 16,759 32,578 Long term debt (7,282,268) (6,799,941) (7,171,278) Accounts payable to the Company (1,152,805) (372,798) (104,065) Other long term liabilities (21,609) (19,783) (19,864) Deferred income tax - Net (330,999) (371,984) (448,829) Shareholders’ equity Ps. 5,424,505 Ps. 5,894,541 Ps. 6,745,170 Year ended December, 31 2018 2019 2020 Condensed statements of comprehensive income Revenue Ps. 3,025,267 Ps. 3,306,149 Ps. 2,902,238 Operating cost and expenses (2,098,323) (2,270,055) (1,956,081) Other income 134,637 204,074 158,906 Comprehensive financial cost - Net (538,268) (485,037) (495,443) Deferred income tax (62,252) (55,781) (60,684) Net (loss) income for the year 461,061 699,350 548,936 Foreign currency translation (5,772) (229,314) (301,695) Total comprehensive income Ps. 455,289 Ps. 470,036 Ps. 247,241 Airplan information
Schedule or useful lives land, furniture and equipment	2019 2020 Furniture equipment 10 a 20 % 10 to 20 % Machinery 10 a 20 % 10 to 20 % Computer equipment 20 a 33 % 20 to 33 % Transportation equipment 20 a 25 % 20 to 25 % Improvements to leased premises 10 % 10 %
Schedule of useful lives licenses and commercial direct operation	Licenses 28 years ODC 28 years Commercial Rights of Aerostar 32 years Commercial Rights of Airplan 12 years

Financial risk management_ (Tab

Financial risk management: (Tables)	12 Months Ended
	Dec. 31, 2020
Financial risk management:
Schedule of exchange rate risk	December 31, 2019 2020 Monetary position: Asset Ps. 164,370 Ps. 88,426 Liability (4,853) (5,578) Ps. 159,517 Ps. 82,848
Schedule of liquidity position	December 31, 2019 Cash and equivalents Total Debt Debt term short Debt term long Mexico Ps. 4,991,567 Ps. 3,992,467 Ps. 23,998 Ps. 3,968,469 Aerostar 698,466 6,799,941 311,372 6,488,569 Airplan 502,646 2,920,485 214,237 2,706,248 Total Ps. 6,192,679 Ps. 13,712,893 Ps. 549,607 Ps. 13,163,286 December 31, 2020 Cash and equivalents Total Debt Debt term short Debt term long Mexico Ps. 4,058,495 Ps. 3,971,210 Ps. 322,209 Ps. 3,649,001 Aerostar 804,634 7,171,278 529,337 6,641,941 Airplan 329,499 2,757,858 287,204 2,470,654 Total Ps. 5,192,628 Ps. 13,900,346 Ps. 1,138,750 Ps. 12,761,596
Schedule of liquidity risk	Under Between 3 months Between 1 Between 2 and At December 31, 2019 3 months and one year and 2 years 5 years Bank loans and interest Ps. 14,639 Ps. 223,596 Ps. 228,073 Ps. 6,446,644 Long term debt 111,676 199,696 204,492 6,284,077 Suppliers 245,100 Accounts payable and accrued expenses 1,378,657 At December 31, 2020 Bank loans and interest Ps. 11,176 Ps. 797,339 Ps. 2,238,558 Ps. 3,881,097 Long term debt 114,420 215,815 233,123 6,408,818 Suppliers 353,806 Accounts payable and accrued expenses 1,187,345
Schedule of short term liquidity	December 31, 2019 2020 Current assets Ps. 7,845,856 Ps. 7,716,049 Current liabilities 2,560,020 2,767,087 Short term position (liquidity) Ps. 5,285,836 Ps. 4,948,962

Consolidated statements of ca_3

Consolidated statements of cash flows: (Tables)	12 Months Ended
	Dec. 31, 2020
Consolidated statements of cash flows:
Schedule of analysis of net debt and movements in net debt	Long - term debt Bank Loans 2018 2019 2020 2018 2019 2020 Accounts payable Ps. 324,590 Ps. 311,372 Ps. 330,235 Bank loans (Note 10) Ps. 175,515 Ps. 238,235 Ps. 808,515 Bank loans (Note 10) 7,042,598 6,674,717 6,119,655 Long-term debt (Note 11) 6,957,678 6,488,569 6,641,941 Balances at December 31 Ps. 7,282,268 Ps. 6,799,941 Ps. 6,972,176 Ps. 7,218,113 Ps. 6,912,952 Ps. 6,928,170 Balances at January 1 of the debt-net Ps. 7,489,465 Ps. 7,282,268 Ps. 6,799,941 Ps. 10,494,853 Ps. 7,218,113 Ps. 6,912,952 Interest expense 475,110 444,028 450,806 696,641 601,873 398,899 Proceeds from bank loans 306,241 Interest paid (646,418) (486,164) (492,653) (578,600) (466,066) Payments of the long term debt and bank loan (205,308) (253,925) (3,090,124) (152,047) (245,520) Foreign currency translation (35,889) (234,883) 452,281 (166,301) (176,387) 21,664 Exchange (income)/loss on foreign currency (224,303) Balances at December 31 Ps. 7,282,268 Ps. 6,799,941 Ps. 6,972,176 Ps. 7,218,113 Ps. 6,912,952 Ps. 6,928,170

Subsequent Event_ (Tables)

Subsequent Event: (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of non-adjusting events after reporting period [line items]
Schedule or investment commitments	Period Amount 2021 Ps. 5,460,586 2022 1,907,832 2023 892,356 Ps. 8,260,774 (1) (1) Figures in thousand pesos adjusted at December 31, 2020 based on the Construction Price Index (IPCO) in the terms of the MDP.
COVID-19
Disclosure of non-adjusting events after reporting period [line items]
Schedule or investment commitments	Amount (1) Period Previous (2) Reduced 2021 Ps. 5,460,586 Ps. 3,064,148 2022 1,907,832 1,793,811 2023 892,356 457,470 Ps. 8,260,774 Ps. 5,315,429 (1) Figures in thousand pesos adjusted at December 31, 2020 based on the Construction Price Index (IPCO) in the terms of the MDP. (2) See Note 15 b.

Overview_ (Details)

Overview: (Details) - location	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of business combinations line items
Number of airports	9
Agreement term	50 years
Investing public
Disclosure of business combinations line items
Proportion of interest acquired	65.57%	66.54%
ITA
Disclosure of business combinations line items
Proportion of interest acquired	7.65%	7.65%
Servicios Estrategia Patrimonial
Disclosure of business combinations line items
Proportion of interest acquired		13.51%
Agrupacin Aeroportuaria Internacional
Disclosure of business combinations line items
Proportion of interest acquired	14.47%
Remer Soluciones a la Inversion
Disclosure of business combinations line items
Proportion of interest acquired	12.31%	12.31%
Aeropuerto de Cancun
Disclosure of business combinations line items
Proportion of interest in subsidiary	100.00%	100.00%
Aerostar
Disclosure of business combinations line items
Proportion of interest in subsidiary	60.00%
Airplan
Disclosure of business combinations line items
Proportion of interest in subsidiary	100.00%

Overview_ - Significant events

Overview: - Significant events (Details) $ in Thousands	Dec. 30, 2020USD ($)	Sep. 11, 2020COP ($)	Aug. 19, 2020MXN ($)	Jun. 29, 2020MXN ($)	May 12, 2020USD ($)	May 12, 2020MXN ($)	Apr. 01, 2020USD ($)	Apr. 01, 2020MXN ($)	Jun. 02, 2015COP ($)	Jun. 02, 2015MXN ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2020COP ($)	Dec. 31, 2020MXN ($)	Dec. 30, 2020MXN ($)	Sep. 30, 2020MXN ($)	Sep. 11, 2020MXN ($)	Dec. 31, 2019COP ($)	Dec. 31, 2019MXN ($)
Disclosure of geographical areas [line items]
Points to add interest rate															1.25%	1.25%				1.25%	1.25%
Increase in allowance for bad debts												$ 154,417	$ 154,417,000
Deferment investments			$ 2,292,355,000															$ 2,292,355,000
Loans received																$ 7,135,795,000					$ 7,054,546,000
Disposal of loans									$ 440,000,000,000	$ 2,897,404,000		$ 243,998,000	$ 152,047,000	$ 3,090,124,000
Percentage of decrease in consolidated income, excluding income from construction services											(42.46%)	(42.46%)
Percentage of decrease in aeronautical income											(43.60%)	(43.60%)
Percentage of decrease in non-aeronautical income											(40.63%)	(40.63%)
Mexico
Disclosure of geographical areas [line items]
Reduction in passenger traffic											51.60%	51.60%
Points to add interest rate															7.00%	7.00%
Term of guaranteed notes receivable											1 year 6 months	1 year 6 months
Notes received pledged																$ 185,140,000
Increase in allowance for bad debts												$ 70,470,000
Deferment investments			$ 2,292,355,000
Period for quinquennial Master Development Program			5 years
Loans received																3,980,000,000					4,000,000,000
Percentage of decrease in aeronautical income											(50.82%)	(50.82%)
Percentage of decrease in non-aeronautical income											(42.53%)	(42.53%)
Colombia (Airplan)
Disclosure of geographical areas [line items]
Reduction in passenger traffic											65.00%	65.00%
Notes received pledged																60,617,000
Increase in allowance for bad debts												$ 33,105,000
Loans received		$ 11,612,000,000													$ 375,525,853	2,956,708,000			$ 67,041,000	$ 402,597,463	$ 3,054,546,000
Term of loan		1 year
Percentage of decrease in aeronautical income											(64.86%)	(64.86%)
Percentage of decrease in non-aeronautical income											(41.44%)	(41.44%)
Puerto Rico (Aerostar)
Disclosure of geographical areas [line items]
Reduction in passenger traffic											48.70%	48.70%
Increase in allowance for bad debts												$ 50,842,000
Loans received	$ 20,000																$ 399,010,000
Term of loan	3 years
Disposal of loans							$ 10,000	$ 239,200,000
Percentage of decrease in aeronautical income											(3.33%)	(3.33%)
Percentage of decrease in non-aeronautical income											(32.72%)	(32.72%)
Amount of grant offer					$ 33,417	$ 717,590,000					$ 33,417	$ 717,590,000
Amount of aid subsidy received					$ 17,125	$ 367,752,000					$ 17,125	$ 367,752,000
Banco Popular De Puerto Rico
Disclosure of geographical areas [line items]
Points to add interest rate	0.50%						0.50%	0.50%									0.50%
Loans received															$ 10,000	$ 199,087,000
Term of loan	3 years
Banco Popular De Puerto Rico | Mexico
Disclosure of geographical areas [line items]
Loans received				$ 1,500,000,000
Term of loan				18 months

Segment Information_ (Details)

Segment Information: (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating segments:
Aeronautical revenue	$ 5,412,418	$ 9,596,975	$ 8,942,910
Non aeronautical services revenue	3,555,227	5,988,470	5,531,557
Construction services (Note 3.1.3)	3,657,086	1,236,193	935,774
Total	12,624,731	16,821,638	15,410,241
Operating profit	3,276,176	8,481,295	7,778,969
Total assets	60,411,211	57,515,881
Total liabilities	18,718,005	18,744,704
Exchange rate translation from non-current assets (***)	800,638	(588,575)	116,059
Amortization and depreciation	(1,934,766)	(1,836,897)	(1,760,741)
Operating segments
Operating segments:
Aeronautical revenue	5,412,418	9,596,975	8,942,910
Non aeronautical services revenue	3,555,227	5,988,470	5,531,557
Construction services (Note 3.1.3)	3,657,086		935,774
Operating profit	3,276,176	8,481,294	7,778,969
Non-current assets	52,695,162	49,670,025	50,180,909
Total assets	60,411,211	57,515,881	56,181,821
Total liabilities	18,718,005	18,744,704	19,500,432
Improvements to assets under concession and acquisition of furniture and equipment in the period	3,328,560	2,614,864	1,636,325
Amortization and depreciation	(1,934,766)	(1,836,897)	(1,760,741)
Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	4,115,664	8,255,982	7,687,328
Non aeronautical services revenue	461,502	895,591	621,850
Total	4,577,166	9,151,573	8,309,178
Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	2,718,752	1,340,993	1,209,661
Non aeronautical services revenue	3,093,725	5,092,879	4,477,678
Construction services (Note 3.1.3)	3,657,086	1,236,193	935,774
Total	8,047,565	7,670,065	6,623,114
Aeropuerto de Cancun | Operating segments
Operating segments:
Aeronautical revenue	2,218,230	4,550,164	4,428,546
Non aeronautical services revenue	2,252,157	4,024,354	3,831,325
Construction services (Note 3.1.3)	1,855,747	249,127	205,834
Operating profit	2,079,965	5,355,787	5,206,971
Non-current assets	18,899,582	17,533,430	16,927,804
Total assets	22,406,388	21,463,802	19,002,035
Total liabilities	5,557,692	5,383,343	4,528,342
Improvements to assets under concession and acquisition of furniture and equipment in the period	1,720,381	1,076,257	364,795
Amortization and depreciation	(487,333)	(463,988)	(455,003)
Aeropuerto de Cancun | Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	1,888,076	3,933,693	3,846,184
Non aeronautical services revenue	319,367	662,485	621,850
Total	2,207,443	4,596,178	4,468,034
Aeropuerto de Cancun | Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	330,154	616,471	543,282
Non aeronautical services revenue	1,932,790	3,361,869	2,888,043
Construction services (Note 3.1.3)	1,855,747	249,127	205,834
Total	4,118,691	4,227,467	3,637,160
Aerostar | Operating segments
Operating segments:
Aeronautical revenue	1,808,102	1,870,428	1,700,859
Non aeronautical services revenue	740,450	1,100,573	964,404
Construction services (Note 3.1.3)	353,686	335,148	360,004
Operating profit	923,518	1,068,148	882,381
Non-current assets	20,229,990	19,454,107	20,515,694
Total assets	21,630,906	20,468,947	21,607,145
Total liabilities	8,934,439	8,807,985	10,040,600
Improvements to assets under concession and acquisition of furniture and equipment in the period	400,500	376,649	772,009
Amortization and depreciation	(746,524)	(659,873)	(632,236)
Aerostar | Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	953,715	1,369,066	1,245,320
Non aeronautical services revenue	142,135	233,106
Total	1,095,850	1,602,172	1,245,320
Aerostar | Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	854,387	501,362	455,539
Non aeronautical services revenue	598,315	867,467	954,626
Construction services (Note 3.1.3)	353,686	335,148	360,004
Total	1,806,388	1,703,977	1,770,169
Airplan | Operating segments
Operating segments:
Aeronautical revenue	488,981	1,391,657	1,276,506
Non aeronautical services revenue	296,961	507,076	396,834
Construction services (Note 3.1.3)	6,918	175,998	312,375
Operating profit	(242,234)	441,413	239,893
Non-current assets	5,604,037	5,836,603	6,592,640
Total assets	6,090,371	6,573,460	6,905,451
Total liabilities	3,826,600	4,161,205	4,575,476
Improvements to assets under concession and acquisition of furniture and equipment in the period	6,918	176,335	415,042
Amortization and depreciation	(461,563)	(482,130)	(452,364)
Airplan | Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	459,655	1,322,648	1,200,941
Total	459,655	1,322,648	1,200,941
Airplan | Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	29,326	69,009	75,565
Non aeronautical services revenue	296,961	507,076	395,410
Construction services (Note 3.1.3)	6,918	175,998	312,375
Total	333,205	752,083	783,350
Merida | Operating segments
Operating segments:
Aeronautical revenue	281,659	579,727	469,879
Non aeronautical services revenue	90,431	129,527	117,277
Construction services (Note 3.1.3)	728,718	134,104	4,831
Operating profit	95,167	384,115	297,468
Non-current assets	2,426,454	1,780,146	1,454,497
Total assets	2,913,304	1,981,396	1,857,958
Total liabilities	49,910	(27,836)	(25,257)
Improvements to assets under concession and acquisition of furniture and equipment in the period	570,940	407,684	7,116
Amortization and depreciation	(49,427)	(48,371)	(47,803)
Merida | Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	254,210	530,736	426,070
Total	254,210	530,736	426,070
Merida | Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	27,449	48,991	41,179
Non aeronautical services revenue	90,431	129,527	57,554
Construction services (Note 3.1.3)	728,718	134,104	4,831
Total	846,598	312,622	103,564
Villahermosa | Operating segments
Operating segments:
Aeronautical revenue	132,751	251,468	201,502
Non aeronautical services revenue	42,103	58,270	59,822
Construction services (Note 3.1.3)	154,155	57,225	15,604
Operating profit	40,020	152,041	113,038
Non-current assets	1,097,864	1,003,909	921,162
Total assets	1,345,826	1,301,195	1,241,529
Total liabilities	78,198	78,227	79,070
Improvements to assets under concession and acquisition of furniture and equipment in the period	118,736	117,405	12,671
Amortization and depreciation	(31,897)	(30,693)	(30,147)
Villahermosa | Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	120,688	229,217	180,407
Total	120,688	229,217	180,407
Villahermosa | Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	12,063	22,251	21,027
Non aeronautical services revenue	42,103	58,270	39,395
Construction services (Note 3.1.3)	154,155	57,225	15,604
Total	208,321	137,746	76,027
Holding & service | Operating segments
Operating segments:
Non aeronautical services revenue	1,265,920	1,748,731	1,684,204
Construction services (Note 3.1.3)		284,591
Operating profit	327,631	585,440	605,860
Non-current assets	33,164,914	30,598,817	28,789,664
Total assets	33,834,595	31,343,675	29,525,000
Total liabilities	184,800	244,152	205,077
Amortization and depreciation	(6,976)	(7,194)	(640)
Holding & service | Operating segments | Transferred over a period time:
Operating segments:
Non aeronautical services revenue	1,265,920	1,748,731	1,684,204
Total	1,265,920	1,748,731	1,684,204
Other | Operating segments
Operating segments:
Aeronautical revenue	482,695	953,531	865,618
Non aeronautical services revenue	133,496	169,120	162,345
Construction services (Note 3.1.3)	557,862		37,126
Operating profit	52,109	494,350	433,358
Non-current assets	5,029,721	4,628,280	4,314,529
Total assets	5,947,221	5,548,880	5,377,784
Total liabilities	86,366	97,834	97,124
Improvements to assets under concession and acquisition of furniture and equipment in the period	511,085	460,534	64,692
Amortization and depreciation	(151,046)	(144,648)	(142,548)
Other | Operating segments | Transferred at a point in time:
Operating segments:
Aeronautical revenue	439,320	870,622	788,406
Total	439,320	870,622	788,406
Other | Operating segments | Transferred over a period time:
Operating segments:
Aeronautical revenue	43,375	82,909	73,068
Non aeronautical services revenue	133,496	169,120	143,100
Construction services (Note 3.1.3)	557,862	284,591	37,126
Total	734,733	536,620	253,294
Consolidation adjustments | Operating segments
Operating segments:
Non aeronautical services revenue	(1,266,291)	(1,749,181)	(1,684,654)
Construction services (Note 3.1.3)		1,236,193
Non-current assets	(33,757,400)	(31,165,267)	(29,335,081)
Total assets	(33,757,400)	(31,165,474)	(29,335,081)
Total liabilities		(206)
Consolidation adjustments | Operating segments | Transferred over a period time:
Operating segments:
Non aeronautical services revenue	(1,266,291)	(1,749,181)	(1,684,654)
Total	$ (1,266,291)	$ (1,749,181)	$ (1,684,654)

Segment information_ Additional

Segment information: Additional information (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating segments:
Agreement term	50 years
Aeropuerto de Cancun
Operating segments:
Proportion of interest in subsidiary	100.00%	100.00%
Airplan
Operating segments:
Proportion of interest in subsidiary	100.00%
Aerostar
Operating segments:
Proportion of interest in subsidiary	60.00%

Revenue from Contracts with C_3

Revenue from Contracts with Customers: Construction services (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contracts with Customers:
Compulsory works		$ 28,056
Construction services (Note 3.1.3)	$ 3,657,086	$ 1,236,193	$ 935,774

Revenue from Contracts with C_4

Revenue from Contracts with Customers: Airports law and regulations (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Revenue	$ 12,624,731	$ 16,821,638	$ 15,410,241
Commercial services	2,544,474	4,265,669	4,121,709
Construction services	3,657,086	1,236,193	935,774
Regulated services:
Revenue:
Revenue	5,637,758	9,890,230	9,222,535
Regulated services: | Passenger fees
Revenue:
Revenue	3,476,804	7,005,018	6,547,645
Regulated services: | Landing fees
Revenue:
Revenue	983,173	1,148,747	1,047,687
Regulated services: | Platform
Revenue:
Revenue	395,432	405,814	413,129
Regulated services: | Security services
Revenue:
Revenue	46,553	102,216	91,996
Regulated services: | Baggage inspection fees
Revenue:
Revenue	140,502	296,143	268,940
Regulated services: | Passenger walkway
Revenue:
Revenue	333,134	575,464	509,440
Regulated services: | Passengers documentation counters
Revenue:
Revenue	9,383	16,821	18,152
Regulated services: | Other airport services
Revenue:
Revenue	252,777	340,007	325,546
Non regulated services:
Revenue:
Commercial services	2,544,474	4,265,669	4,121,709
Revenue	3,329,887	5,695,215	5,251,932
Non regulated services: | Retail stores
Revenue:
Revenue	461,502	895,591	621,850
Non regulated services: | Access fees on nonpermanent ground transportation
Revenue:
Revenue	29,967	63,159	57,885
Non regulated services: | Car parking and related access fees
Revenue:
Revenue	171,193	319,200	298,536
Non regulated services: | Other airport services
Revenue:
Revenue	122,751	151,596	151,952
Non regulated services: | Non-regulated services excluding commercial services
Revenue:
Revenue	$ 785,413	$ 1,429,546	$ 1,130,223

Revenue from Contracts with C_5

Revenue from Contracts with Customers: Commercial services (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contracts with Customers:
Commercial services	$ 2,544,474	$ 4,265,669	$ 4,121,709
Duty free shops
Revenue from Contracts with Customers:
Commercial services	991,833	1,785,508	1,861,116
Food and beverage
Revenue from Contracts with Customers:
Commercial services	449,340	820,001	738,371
Advertising revenues
Revenue from Contracts with Customers:
Commercial services	92,683	187,192	161,214
Car rental companies
Revenue from Contracts with Customers:
Commercial services	485,725	673,969	611,864
Banking and currency exchange services
Revenue from Contracts with Customers:
Commercial services	72,563	115,927	119,855
Teleservices
Revenue from Contracts with Customers:
Commercial services	15,174	16,038	14,139
Ground transportations
Revenue from Contracts with Customers:
Commercial services	49,721	98,033	76,106
Other services
Revenue from Contracts with Customers:
Commercial services	$ 387,435	$ 569,001	$ 539,044

Revenue from Contracts with C_6

Revenue from Contracts with Customers: Domestic and international passenger traffic - (Details) - individual	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total domestic passengers	17,419	35,371
Total international passengers	8,171	20,291
Number of total passengers	25,590	55,662
Mexico
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total domestic passengers	9,246	16,684
Total international passengers	7,283	17,478
Puerto Rico (Aerostar)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total domestic passengers	4,548	8,456
Total international passengers	298	992
Colombia (Airplan)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total domestic passengers	3,625	10,231
Total international passengers	590	1,821

Revenue from Contracts with C_7

Revenue from Contracts with Customers: Decrease in passenger traffic as a result of COVID-19 - (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue	$ 5,412,418	$ 9,596,975	$ 8,942,910
Non aeronautical services revenue	3,555,227	5,988,470	$ 5,531,557
Total without construction revenue	$ 8,967,645	15,585,445
Change % compared to 2019, Total aeronautical revenue	(43.60%)
Change % compared to 2019, Total non-aeronautical revenue	(40.63%)
Change % compared to 2019, Total without construction revenue	(42.46%)
Mexico
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue	$ 3,115,335	6,334,890
Non aeronautical services revenue	$ 2,517,816	4,380,821
Change % compared to 2019, Total aeronautical revenue	(50.82%)
Change % compared to 2019, Total non-aeronautical revenue	(42.53%)
Puerto Rico (Aerostar)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue	$ 1,808,102	1,870,428
Non aeronautical services revenue	$ 740,450	1,100,573
Change % compared to 2019, Total aeronautical revenue	(3.33%)
Change % compared to 2019, Total non-aeronautical revenue	(32.72%)
Colombia (Airplan)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue	$ 488,981	1,391,657
Non aeronautical services revenue	$ 296,961	$ 507,076
Change % compared to 2019, Total aeronautical revenue	(64.86%)
Change % compared to 2019, Total non-aeronautical revenue	(41.44%)

Revenue from Contracts with C_8

Revenue from Contracts with Customers: Future lease income (Details) $ in Thousands	Dec. 31, 2020MXN ($)
2021
Future lease income:
Lease payments receivable	$ 2,515,572
2022
Future lease income:
Lease payments receivable	2,315,111
2023
Future lease income:
Lease payments receivable	2,184,496
2024
Future lease income:
Lease payments receivable	1,943,444
2025
Future lease income:
Lease payments receivable	1,857,885
2026 - 2028
Future lease income:
Lease payments receivable	$ 2,380,113

Revenue from Contracts with C_9

Revenue from Contracts with Customers: Additional information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2013USD ($)	Dec. 31, 2013MXN ($)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Prompt payment discount		$ 44,561,000		$ 47,374,000		$ 45,293,000
Non-aeronautical services		3,555,227,000		5,988,470,000		5,531,557,000
Operating lease income		1,931,965,000		3,435,381,000		3,371,630,000
Fixed lease income		612,509,000		830,288,000		750,079,000
Aeronautical services revenue		5,412,418,000		9,596,975,000		8,942,910,000
Revenue from rendering of transport services		225,340,000		293,256,000		279,625,000
Construction services		3,657,086,000		1,236,193,000		935,774,000
Revenue from construction contracts		3,657,086,000		1,236,193,000		935,774,000
Annual contributions		5,412,418,000		9,596,975,000		8,942,910,000
Aerostar
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue	$ 64,495	$ 1,391,462,000	$ 63,143	1,216,134,000	$ 62,000	1,249,254,000
Term of Use Agreement	15 years	15 years
Annual contributions	$ 64,495	$ 1,391,462,000	$ 63,143	1,216,134,000	$ 62,000	1,249,254,000
Mexico
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue		3,340,674,000		6,628,146,000		6,245,170,000
Construction services		3,296,482,000		725,047,000		263,395,000
Revenue from construction contracts		3,296,482,000		725,047,000		263,395,000
Annual contributions		3,340,674,000		6,628,146,000		6,245,170,000
Notes received pledged		185,140,000
Puerto Rico (Aerostar)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Construction services		353,686,000		335,148,000		360,004,000
Revenue from construction contracts		353,686,000		335,148,000		360,004,000
Colombia (Airplan)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Construction services		6,918,000		175,998,000		312,375
Revenue from construction contracts		6,918,000		175,998,000		312,375
Notes received pledged		60,617,000
Airplan
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue		488,981,000		1,391,657,000		1,276,506,000
Annual contributions		488,981,000		1,391,657,000		1,276,506,000
Aerostar
Disclosure of disaggregation of revenue from contracts with customers [line items]
Aeronautical services revenue	62,000	1,808,102,000		1,870,427,000		1,700,859,000	$ 62,000	$ 1,235,982,000
Annual contributions	$ 62,000	$ 1,808,102,000		$ 1,870,427,000		$ 1,700,859,000	$ 62,000	$ 1,235,982,000

Costs and expenses by nature__2

Costs and expenses by nature: (Details) $ in Thousands, $ in Millions	Sep. 20, 2017USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)
Costs and expenses by nature:
Short term benefits		$ 1,039,883	$ 1,199,217	$ 1,118,926
Electric power		382,026	474,719	458,827
Maintenance and conservation		447,884	699,557	673,603
Professional fees		251,621	308,740	306,169
Insurance and bonds		127,750	225,252	200,477
Surveillance services	$ 29.7	275,206	325,613	310,065
Cleaning services		207,599	232,219	229,003
Technical assistance (Note 15.4)		175,615	404,086	386,249
Right of use of assets under concession		535,379	986,850	898,253
Amortization and depreciation of intangible assets, furniture and equipment		1,934,766	1,836,897	1,760,741
Consumption of commercial items		169,298	323,899	300,845
Construction services (Note 3.1.3)		3,657,086	1,236,193	935,774
Termination benefits (Note 18.17)		2,382	1,922	1,595
Employees' statutory profit sharing		3,115	10,250	8,052
Impairment of accounts receivable (Note 6)		154,417	12,127	6,241
Other		143,409	267,521	171,089
Total aeronautical and non-aeronautical services costs, costs of construction services and administrative expenses		$ 9,507,436	$ 8,545,062	$ 7,765,909

Costs and expenses by nature_ A

Costs and expenses by nature: Additional information (Details) $ in Thousands, $ in Thousands	May 12, 2020USD ($)	May 12, 2020MXN ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)
Disclosure of geographical areas [line items]
Right of use of assets under concession				$ 535,379	$ 986,850	$ 898,253
Short term benefits				1,039,883	1,199,217	1,118,926
Maintenance and preservation				447,884	699,557	673,603
Mexico
Disclosure of geographical areas [line items]
Right of use of assets under concession				254,337	484,402	458,290
Colombia (Airplan)
Disclosure of geographical areas [line items]
Right of use of assets under concession				$ 149,602	361,029	$ 312,244
Percentage of revenue			19.00%	19.00%		19.00%
Puerto Rico (Aerostar)
Disclosure of geographical areas [line items]
Right of use of assets under concession				$ 131,440	$ 141,419	$ 127,719
Percentage of revenue						5.00%
Amount of grant offer	$ 33,417	$ 717,590	$ 33,417	717,590
Amount of subsidy received for reimbursements of invoices	$ 17,125	$ 367,752	$ 17,125	$ 367,752
Number of years fund usage	4 years	4 years
Pertinent expense, net		$ 339,681
Short term benefits		165,894
Amortization of insurance and bonding		142,274
Amortization of others		23,650
Maintenance and preservation		$ 7,863

Cash and cash equivalents_ (Det

Cash and cash equivalents: (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash and cash equivalents:
Cash and cash held at banks	$ 3,514,293	$ 3,642,037
Short term investments	1,678,335	2,550,642
Cash and cash equivalents	$ 5,192,628	$ 6,192,679	$ 4,584,507	$ 4,677,454

Cash and cash equivalents_ Rest

Cash and cash equivalents: Restricted (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents:
Restricted cash and cash equivalents used for passenger facility charge authorized by FAA	$ 5,055	$ 26,849
Restricted cash related to funds related to the recovery of insurance		$ 138,773

Accounts receivable - Net_ (Det

Accounts receivable - Net: (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts receivable - Net:
Clients	$ 1,458,653	$ 1,195,559
Less: impairment provision	(346,183)	(191,766)	$ (179,639)
Clients, accounts receivable, net	1,112,470	1,003,793
Documents receivable from clients	245,757
Total accounts receivable	$ 1,358,227	$ 1,003,793

Accounts receivable - Net_ Move

Accounts receivable - Net: Movement in provision (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Impairment provision:
Provision beginning balance	$ 191,766	$ 179,639
Application to provision	70,470	(369)
Provision impairment	128,000
Provision ending balance	346,183	191,766
Aerostar
Impairment provision:
Application to provision	50,842	(5,585)
Airplan
Impairment provision:
Provision impairment	$ 33,105	$ 18,081

Accounts receivable - Net_ Expe

Accounts receivable - Net: Expected loss rate (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Expected loss rate:
Accounts receivables	$ 1,458,653	$ 1,195,559
Impairment provision	346,183	191,766	$ 179,639
Mexico
Expected loss rate:
Accounts receivables	65,452
Impairment provision	$ 199,400	$ 128,930
Mexico | Current
Expected loss rate:
Expected credit loss rate	0.00%	0.02%
Accounts receivables	$ 474,854
Mexico | Three months
Expected loss rate:
Expected credit loss rate	0.02%	0.02%
Accounts receivables	$ 59,819	$ 1,012
Impairment provision	$ 784
Mexico | Six months
Expected loss rate:
Expected credit loss rate	19.20%	0.02%
Accounts receivables	$ 14,292	$ 1,733
Impairment provision	$ 2,744
Mexico | One year
Expected loss rate:
Expected credit loss rate	100.00%	100.00%
Accounts receivables	$ 66,816	$ 126
Impairment provision	$ 66,816
Mexico | More than 365
Expected loss rate:
Expected credit loss rate	100.00%	100.00%
Accounts receivables	$ 129,056	$ 128,930
Impairment provision	129,056	128,930
Puerto Rico (Aerostar)
Expected loss rate:
Impairment provision	$ 88,331	$ 37,489
Puerto Rico (Aerostar) | Current
Expected loss rate:
Expected credit loss rate	5.40%	1.00%
Accounts receivables	$ 444,515	$ 159,796
Impairment provision	$ 23,984	1,599
Puerto Rico (Aerostar) | Three months
Expected loss rate:
Expected credit loss rate	5.10%
Accounts receivables	$ 60,421	97,697
Impairment provision	$ 3,084	$ 3,611
Puerto Rico (Aerostar) | Three months | Minimum
Expected loss rate:
Expected credit loss rate		2.50%
Puerto Rico (Aerostar) | Three months | Maximum
Expected loss rate:
Expected credit loss rate		5.00%
Puerto Rico (Aerostar) | Six months
Expected loss rate:
Expected credit loss rate	43.70%	15.00%
Accounts receivables	$ 3,702	$ 2,176
Impairment provision	$ 1,619	$ 544
Puerto Rico (Aerostar) | One year
Expected loss rate:
Expected credit loss rate	88.00%	50.00%
Accounts receivables	$ 4,896	$ 712
Impairment provision	$ 4,284	$ 499
Puerto Rico (Aerostar) | More than 365
Expected loss rate:
Expected credit loss rate	100.00%	100.00%
Accounts receivables	$ 55,360	$ 31,236
Impairment provision	55,360	31,236
Colombia (Airplan)
Expected loss rate:
Impairment provision	$ 58,452	$ 25,347
Colombia (Airplan) | Current
Expected loss rate:
Expected credit loss rate	0.83%	0.83%
Colombia (Airplan) | Three months
Expected loss rate:
Expected credit loss rate	0.70%	0.83%
Accounts receivables	$ 73,865	$ 114,858
Impairment provision	$ 516	$ 953
Colombia (Airplan) | Six months
Expected loss rate:
Expected credit loss rate	0.83%	0.83%
Accounts receivables	$ 1,610	$ 52,410
Impairment provision	$ 110	$ 435
Colombia (Airplan) | One year
Expected loss rate:
Expected credit loss rate	100.00%	100.00%
Accounts receivables	$ 37,214	$ 15,357
Impairment provision	$ 25,593	$ 15,357
Colombia (Airplan) | More than 365
Expected loss rate:
Expected credit loss rate	100.00%	100.00%
Accounts receivables	$ 32,233	$ 8,602
Impairment provision	$ 32,233	$ 8,602

Accounts receivable - Net_ Addi

Accounts receivable - Net: Additional information (Details) - MXN ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 30, 2020	Apr. 01, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]
Trade and other current receivables	$ 1,358,227,000	$ 1,003,793,000
Points to add interest rate	1.25%	1.25%
Increase in impairment allowance for accounts receivable	$ 154,417	$ 154,417,000
Accounts receivables	1,458,653,000	1,195,559,000
Unimpaired past due
Disclosure of disaggregation of revenue from contracts with customers [line items]
Accounts receivables	474,854,000	580,914,000
Unimpaired past due | Three months
Disclosure of disaggregation of revenue from contracts with customers [line items]
Accounts receivables	189,721,000	209,003,000
Unimpaired past due | Later than one year
Disclosure of disaggregation of revenue from contracts with customers [line items]
Accounts receivables	217,085,000	264,682,000
Passenger fees
Disclosure of disaggregation of revenue from contracts with customers [line items]
Trade and other current receivables	$ 547,810,000	$ 615,223,000
Banco Popular De Puerto Rico
Disclosure of disaggregation of revenue from contracts with customers [line items]
Points to add interest rate			0.50%	0.50%
Mexico
Disclosure of disaggregation of revenue from contracts with customers [line items]
Points to add interest rate	7.00%
Notes received pledged	$ 185,140,000
Term of guaranteed notes receivable	1 year 6 months
Increase in impairment allowance for accounts receivable	$ 70,470,000
Accounts receivables	65,452,000
Colombia (Airplan)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Notes received pledged	60,617,000
Increase in impairment allowance for accounts receivable	33,105,000
Puerto Rico (Aerostar)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Increase in impairment allowance for accounts receivable	$ 50,842,000
International passenger traffic (in percent)	70.00%
Domestic traffic (in percent)	80.00%	85.00%

Land, furniture and equipment_3

Land, furniture and equipment - Net: (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Land, furniture and equipment:
Beginning balance	$ 520,623	$ 558,480
Foreign currency translation		1,852
Additions		28,056
Disposals transfers		(67,765)
Ending balance	504,385	520,623
Land
Land, furniture and equipment:
Beginning balance	302,323	302,323
Ending balance	302,323	302,323
Furniture equipment
Land, furniture and equipment:
Beginning balance	110,620	83,466
Foreign currency translation	515	(270)
Additions	5,927	27,424
Ending balance	117,062	110,620
Machinery
Land, furniture and equipment:
Beginning balance	106,843	80,511
Foreign currency translation	4,013	(3,869)
Additions	32,762	46,571
Disposals transfers		(16,370)
Ending balance	143,618	106,843
Computer equipment
Land, furniture and equipment:
Beginning balance	52,973	45,812
Foreign currency translation	931	980
Additions	17,667	6,181
Ending balance	71,571	52,973
Transportation equipment
Land, furniture and equipment:
Beginning balance	30,318	22,064
Foreign currency translation	1,420	(1,295)
Additions	1,531	9,549
Ending balance	33,269	30,318
Improvements to leased premises
Land, furniture and equipment:
Beginning balance	59,158	60,640
Foreign currency translation	569	5,040
Additions	3,723	4,615
Disposals transfers		(11,137)
Ending balance	63,450	59,158
Equipment in transit
Land, furniture and equipment:
Beginning balance		68,142
Foreign currency translation		(377)
Disposals transfers		(67,765)
Gross carrying amount
Land, furniture and equipment:
Beginning balance	520,623	490,338
Foreign currency translation	7,047	2,229
Additions	(23,285)	28,056
Ending balance	504,385	520,623
Accumulated depreciation
Land, furniture and equipment:
Beginning balance	(141,612)	(104,478)
Foreign currency translation	(401)	1,643
Additions	(84,895)	(66,284)
Disposals transfers		(27,507)
Ending balance	$ (226,908)	$ (141,612)

Land, furniture and equipment_4

Land, furniture and equipment - Net: Additional information (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Land, furniture and equipment:
Depreciation expense	$ 84,895	$ 66,284	$ 44,298
Mexico
Land, furniture and equipment:
Depreciation expense right-of-use assets	6,689	6,653
Aerostar
Land, furniture and equipment:
Depreciation expense	72,474	54,524	40,410
Airplan
Land, furniture and equipment:
Depreciation expense	$ 1,834	$ 1,506	$ 1,066

Land, furniture and equipment_5

Land, furniture and equipment - Net: Right-of-use assets of leasing assets (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Jan. 01, 2019
Disclosure of quantitative information about right-of-use assets [line items]
Weighted average interest rates of the lessee applied to lease liabilities		9.20%		9.04%
Current lease liabilities		$ 17,236	$ 20,422
Right-of-use assets with property leases		9,513	14,774
Lease liabilities		$ 17,260	$ 20,422
Corporate offices
Disclosure of quantitative information about right-of-use assets [line items]
Lease term of contract	5 years	5 years
Amount of monthly operating lease payments	$ 23,549	$ 469
Number of months rent for security deposit	2 months	2 months
Transportation equipment
Disclosure of quantitative information about right-of-use assets [line items]
Lease term of contract	48 months	48 months
Percentage of default monthly interest rate in th event of nonpayment of lease payment	3.00%	3.00%

Intangible assets, airport co_3

Intangible assets, airport concessions and goodwill - Net: - Movements of intangible assets of airport concessions (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Intangible assets:
Intangible assets and goodwill	$ 49,126,038	$ 49,586,322
Foreign currency translation	1,321,875	(1,309,886)
Additions	1,734,398
Additions		849,602
Intangible assets and goodwill	52,182,311	49,126,038
Accumulated amortization
Intangible assets:
Intangible assets and goodwill	10,395,094	8,703,731
Foreign currency translation	(79,297)	33,462
Additions	(1,849,871)	(1,770,613)
Intangible assets and goodwill	(14,061,413)	10,395,094
Concessions (Regulated Activity)
Intangible assets:
Intangible assets and goodwill	50,586,636	49,961,253
Foreign currency translation	1,059,370	(961,446)
Additions	107,144	591,315
Disposals transfers	932,376	995,514
Intangible assets and goodwill	52,685,526	50,586,636
Contracts assets
Intangible assets:
Intangible assets and goodwill	978,060	671,496
Foreign currency translation	1,295
Additions	3,036,386	1,236,196
Disposals transfers	(311,676)	(929,632)
Intangible assets and goodwill	3,704,065	978,060
Contractor advance
Intangible assets:
Intangible assets and goodwill	696,696
Additions	355,809	762,578
Disposals transfers	(620,700)	(65,882)
Intangible assets and goodwill	431,805	696,696
Licences and ODC
Intangible assets:
Intangible assets and goodwill	279,797	249,671
Additions	84,930	30,126
Intangible assets and goodwill	364,727	279,797
Commercial Right's (Unregulated Activity)
Intangible assets:
Intangible assets and goodwill	6,149,729	6,531,631
Foreign currency translation	340,507	(381,902)
Intangible assets and goodwill	6,490,236	6,149,729
Goodwill | Gross carrying amount
Intangible assets:
Intangible assets and goodwill	2,567,365	2,567,365
Intangible assets and goodwill	$ 2,567,365	$ 2,567,365

Intangible assets, airport co_4

Intangible assets, airport concessions and goodwill - Net: - Allocation of goodwill (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure by geographical areas:
Goodwill	$ 2,567,365	$ 2,567,365
Colombia (Airplan)
Disclosure by geographical areas:
Goodwill	1,509,714	1,509,714
Puerto Rico (Aerostar)
Disclosure by geographical areas:
Goodwill	$ 1,057,651	$ 1,057,651

Intangible assets, airport co_5

Intangible assets, airport concessions and goodwill - Net: - Impairment tests (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure by geographical areas:
Goodwill (Note 1.1)	$ 2,567,365	$ 2,567,365
Puerto Rico (Aerostar)
Disclosure by geographical areas:
Goodwill (Note 1.1)	$ 1,057,651	$ 1,057,651

Intangible assets, airport co_6

Intangible assets, airport concessions and goodwill - Net: - CGU with a significant amount of goodwill (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Colombia (Airplan)
Disclosure by geographical areas:
Discount rate	6.92%	9.66%
Operating costs and expenses annual average	3.00%	5.25%
Departing passenger growth rate		6.70%
Passenger growth rate in the recovery period of each CGU.	52.16%
Recovery period (years)	3 years
Average growth rate of passengers in the period
After the recovery of passengers for each CGU	4.90%
Hierarchy level of the fair value of the recoverable value of the CGU	3
Puerto Rico (Aerostar)
Disclosure by geographical areas:
Discount rate	9.54%	9.60%
Operating costs and expenses annual average	3.00%	4.45%
Departing passenger growth rate		2.50%
Passenger growth rate in the recovery period of each CGU.	19.37%
Recovery period (years)	5 years
Average growth rate of passengers in the period
After the recovery of passengers for each CGU	1.70%
Hierarchy level of the fair value of the recoverable value of the CGU	3
Mexico
Disclosure by geographical areas:
Discount rate	12.20%
Operating costs and expenses annual average	3.00%
Passenger growth rate in the recovery period of each CGU.	34.80%
Recovery period (years)	5 years
Average growth rate of passengers in the period
After the recovery of passengers for each CGU	2.30%
Hierarchy level of the fair value of the recoverable value of the CGU	3

Intangible assets, airport co_7

Intangible assets, airport concessions and goodwill - Net: - Additional information (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2020MXN ($)
Disclosure by geographical areas:
Amortisation expense		$ 1,820,239	$ 1,750,239	$ 1,694,252
Amortization commercial rights		$ 181,545	$ 172,020	179,199
Explanation of value assigned to key assumption	Taking the base scenario and applying a sensitivity analysis to the discount rate by +1% or -1% in each CGU, cash flow projections would have generated an effect of an excess of Ps.8,375,900 and Ps.18,213,261, respectively in Mexico, $563,239 and Ps.4,995,314 in Aerostar, respectively, and Ps.1,273,721 and Ps.1,857,402 in Airplan, respectively.	Taking the base scenario and applying a sensitivity analysis to the discount rate by +1% or -1% in each CGU, cash flow projections would have generated an effect of an excess of Ps.8,375,900 and Ps.18,213,261, respectively in Mexico, $563,239 and Ps.4,995,314 in Aerostar, respectively, and Ps.1,273,721 and Ps.1,857,402 in Airplan, respectively.
Impairment testing on all CGUs considering the entire value of intangible assets, airport concessions and goodwill		$ 52,182,311
Original concession period for operating rights	50 years	50 years
Airplan
Disclosure by geographical areas:
Original concession period for operating rights	40 years	40 years
Minimum | Airplan
Disclosure by geographical areas:
Original concession period for operating rights	24 years	24 years
Positive
Disclosure by geographical areas:
Expected probability-weighted cash flow	10.00%	10.00%
Base
Disclosure by geographical areas:
Expected probability-weighted cash flow	65.00%	65.00%
Negative
Disclosure by geographical areas:
Expected probability-weighted cash flow	25.00%	25.00%
CGU Mexico
Disclosure by geographical areas:
Explanation of period over which management has projected cash flows	P28Y	P28Y
CGU Mexico | Positive
Disclosure by geographical areas:
Percentage applied to passenger traffic	5.00%	5.00%
Amount in excess of cash flow projections					$ 8,375,900
CGU Mexico | Negative
Disclosure by geographical areas:
Percentage applied to passenger traffic	5.00%	5.00%
Amount in excess of cash flow projections					18,213,261
CGU Aerostar
Disclosure by geographical areas:
Explanation of period over which management has projected cash flows	P32Y	P32Y
Explanation of value assigned to key assumption			If the discount rate applied to the cash flow projections of this CGU had been + 1% or -1% (instead of 9.60%), management's estimate would have had the following effects, an excess of the flows of cash against the carrying amount of Ps.3,937,096 and Ps.9,876,930, respectively.
Cash payments	$ 2,500
CGU Aerostar | Positive
Disclosure by geographical areas:
Percentage applied to passenger traffic	10.00%	10.00%
Amount in excess of cash flow projections	$ 563,239		$ 3,937,096
CGU Aerostar | Negative
Disclosure by geographical areas:
Percentage applied to passenger traffic	10.00%	10.00%
Amount in excess of cash flow projections			9,876,930		4,995,314
CGU Airplan
Disclosure by geographical areas:
Period elapsed from date of execution of certificate of commencement of execution	12 years	12 years
Explanation of value assigned to key assumption	If the discount rate applied to the cash flow projections of this CGU had been + 1% or -1% (instead of 9.66)%, Management's estimate would have had the following effects, an excess of the flows of cash against the carrying amount of Ps.615,993 and Ps.1,102,280, respectively.	If the discount rate applied to the cash flow projections of this CGU had been + 1% or -1% (instead of 9.66)%, Management's estimate would have had the following effects, an excess of the flows of cash against the carrying amount of Ps.615,993 and Ps.1,102,280, respectively.
CGU Airplan | Positive
Disclosure by geographical areas:
Percentage applied to passenger traffic	10.00%	10.00%
Amount in excess of cash flow projections			615,993		1,273,721
CGU Airplan | Negative
Disclosure by geographical areas:
Percentage applied to passenger traffic	10.00%	10.00%
Amount in excess of cash flow projections			1,102,280		$ 1,857,402
Licences
Disclosure by geographical areas:
Amortisation expense		$ 29,632	20,374	22,191
Colombia (Airplan)
Disclosure by geographical areas:
Amortisation expense		357,934	384,169	351,885
Amortization commercial rights		$ 101,795	96,455	$ 100,479
Percent of obligation to pay consideration on gross income	19.00%	19.00%		19.00%
Puerto Rico (Aerostar)
Disclosure by geographical areas:
Amortisation expense		$ 492,505	433,328	$ 406,261
Percent of obligation to pay consideration on gross income				5.00%
Mexico
Disclosure by geographical areas:
Amortisation expense		$ 686,460	$ 664,267	$ 656,428

Accounts payable and accrued _3

Accounts payable and accrued expenses (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts payable and accrued expenses:
Suppliers	$ 353,885	$ 245,100
Taxes payable	57,174	175,573
Use rights of assets under concession	5,070	269,916
Accounts payable to related parties (Note 14.1)	53,256	97,312
Lease payable (Note 7.1)	17,236	20,422
Salaries payable	128,105	149,452
Sundry creditors for services provided	640,068	803,746
Accounts payable to contractors	343,610	37,809
Accounts payable and accrued expenses	$ 1,598,404	$ 1,799,330

Bank loans_ Credit lines (Detai

Bank loans: Credit lines (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2020COP ($)	Dec. 31, 2020MXN ($)	Sep. 11, 2020COP ($)	Sep. 11, 2020MXN ($)	Jun. 29, 2020MXN ($)	Dec. 31, 2019COP ($)	Dec. 31, 2019MXN ($)
Bank loans:
Credit line used				$ 7,135,795					$ 7,054,546
Principle amortization				(245,520)					(152,047)
Commissions and interest - Net	$ 37,895	$ 10,453
Short Term				808,515					238,235
Long-Term				6,641,941					6,488,569
Long- term				6,119,655					6,674,717
Fair value				6,400,498					6,712,834
Mexico
Bank loans:
Credit line used				3,980,000					4,000,000
Principle amortization				(20,000)
Commissions and interest - Net	11,210	(7,532)
Short Term				322,209					23,998
Long- term				3,649,001					3,968,470
Fair value				3,947,277					4,090,050
Colombia (Airplan)
Bank loans:
Credit line used			$ 375,525,853	2,956,708	$ 11,612,000,000	$ 67,041		$ 402,597,463	3,054,546
Principle amortization				(225,520)					(152,047)
Commissions and interest - Net	26,670	17,985
Short Term				287,204					214,237
Long- term				2,470,654					2,706,247
Fair value				2,254,033					2,622,784
Santandar
Bank loans:
Credit line used				2,000,000					2,000,000
Commissions and interest - Net	(5,133)	(7,933)
Long- term				1,994,867					1,992,067
Fair value				1,989,862					2,044,664
BBVA Bancomer, S. A.
Bank loans:
Credit line used				1,980,000					2,000,000
Principle amortization				(20,000)
Commissions and interest - Net	16,343	401
Short Term				322,209					23,998
Long- term				1,654,134					1,976,403
Fair value				1,957,415					2,045,386
Bancolombia
Bank loans:
Credit line used			125,250,000	984,985				137,250,000	1,041,415
Principle amortization				(69,959)					(51,834)
Commissions and interest - Net	9,410	6,474
Short Term				81,758					73,067
Long- term				842,678					922,987
Fair value				752,072					894,131
Bancolombia one
Bank loans:
Credit line used			8,128,400	67,697
Principle amortization				(20,309)
Commissions and interest - Net	91
Short Term				47,479
Fair value				47,957
Banco Popular De Puerto Rico
Bank loans:
Credit line used			10,000	199,087
Commissions and interest - Net	15
Short Term				199,102
Fair value				199,188
Banco Popular De Puerto Rico | Mexico
Bank loans:
Credit line used							$ 1,500,000
CorpBanca Columbia
Bank loans:
Credit line used			85,170,000	670,111				93,330,000	708,472
Principle amortization				(47,572)					(35,247)
Commissions and interest - Net	7,511	5,503
Short Term				55,565					49,657
Long- term				574,485					629,071
Fair value				511,409					608,009
Banco Davivienda
Bank loans:
Credit line used			75,149,985	591,130				82,349,995	624,983
Principle amortization				(41,975)					(31,101)
Commissions and interest - Net	6,098	4,332
Short Term				49,012					43,799
Long- term				506,241					554,416
Fair value				451,243					536,479
Banco de Bogota
Bank loans:
Credit line used			30,894,211	242,820				33,854,211	256,744
Principle amortization				(17,256)					(12,786)
Commissions and interest - Net	1,893	1,106
Short Term				20,227					18,014
Long- term				207,230					227,049
Fair value				185,511					220,552
Banco de Occidente
Bank loans:
Credit line used			30,894,228	242,818				33,854,228	256,742
Principle amortization				(17,256)					(12,786)
Commissions and interest - Net	1,758	1,098
Short Term				20,100					18,014
Long- term				207,220					227,040
Fair value				185,511					220,552
Banco Popular
Bank loans:
Credit line used			6,679,029	52,292				7,319,029	55,309
Principle amortization				(3,731)					(2,765)
Commissions and interest - Net	(213)	(348)
Short Term				4,475					4,023
Long- term				43,873					48,174
Fair value				40,110					47,687
Banco AV Villas
Bank loans:
Credit line used			6,680,000	52,558				7,320,000	55,566
Principle amortization				(3,731)					(2,764)
Commissions and interest - Net	589	432
Short Term				4,358					3,895
Long- term				45,058					49,339
Fair value				40,110					47,687
Servicios Financieros
Bank loans:
Credit line used			$ 6,680,000	52,297				$ 7,320,000	55,315
Principle amortization				(3,731)					(2,764)
Commissions and interest - Net	$ (467)	$ (612)
Short Term				4,230					3,768
Long- term				43,869					48,171
Fair value				$ 40,110					$ 47,687

Bank loans_ Syndicated loan (De

Bank loans: Syndicated loan (Details) $ in Thousands	Dec. 31, 2020COP ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)
Bank loans:
Borrowings	$ 440,000,000	$ 13,900,346	$ 13,712,893
Bancolombia
Bank loans:
Borrowings	150,000,000
CorpBanca Columbia
Bank loans:
Borrowings	102,000,000
Banco AV Villas
Bank loans:
Borrowings	8,000,000
Banco Davivienda
Bank loans:
Borrowings	90,000,000
Banco de Bogota
Bank loans:
Borrowings	37,000,000
Banco de Occidente
Bank loans:
Borrowings	37,000,000
Banco Popular
Bank loans:
Borrowings	8,000,000
Servicios Financieros
Bank loans:
Borrowings	$ 8,000,000

Bank loans_ Additional informat

Bank loans: Additional information (Details) $ in Thousands

Dec. 30, 2020USD ($)

Sep. 11, 2020COP ($)

Jun. 29, 2020MXN ($)

Oct. 19, 2017MXN ($)

Jun. 02, 2015COP ($)

Jun. 02, 2015MXN ($)

Oct. 31, 2017MXN ($)

Dec. 31, 2020MXN ($)

Dec. 31, 2019COP ($)

Dec. 31, 2019MXN ($)

Dec. 31, 2018MXN ($)

Dec. 30, 2020MXN ($)

Sep. 11, 2020MXN ($)

Apr. 01, 2020

Dec. 18, 2015USD ($)

Dec. 18, 2015MXN ($)

Bank loans:

Increase (decrease) in fair value measurement, liabilities

$ 605,382

$ 535,125,402

$ 3,408,442

Bank loans paid

$ 440,000,000,000

$ 2,897,404

$ 243,998

$ 152,047

$ 3,090,124

Proceeds from borrowings, classified as financing activities

$ 306,241

Borrowings, adjustment to interest rate basis

1.25%

1.25%

1.25%

Mexico

Bank loans:

Borrowings, adjustment to interest rate basis

7.00%

Colombia (Airplan)

Bank loans:

Borrowings, Term

1 year

BBVA Bancomer, S. A.

Bank loans:

Notional amount

$ 1,500,000

Bank loans paid

$ 2,000,000

Borrowings, interest rate basis

28-Day Interbank Equilibrium Interest Rate (28 Day TIIE)

TIIE rate of 28 days plus 1.25 points.

Borrowings, adjustment to interest rate basis

1.50%

Santandar

Bank loans:

Notional amount

$ 2,000,000

Bancolombia

Bank loans:

Notional amount

$ 11,612,000

$ 67,041

Borrowings, interest rate basis

DTF rate plus

Borrowings, adjustment to interest rate basis

1.70%

1.70%

Borrowings, interest rate

4.43%

4.43%

Banco Popular De Puerto Rico

Bank loans:

Notional amount

$ 20,000

$ 399,010

$ 10,000

$ 239,200

Borrowings, adjustment to interest rate basis

0.50%

0.50%

0.50%

Borrowings, Term

3 years

Unused credit line (in percent)

0.15%

Banco Popular De Puerto Rico | Mexico

Bank loans:

Borrowings, Term

18 months

Long-term debt_ (Details)

Long-term debt: (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)
Long-term debt:
Long					$ 6,641,941	$ 6,488,569
Fair value					6,400,498	6,712,834
Senior secured notes due on March 22, 2035
Long-term debt:
Credit line	$ 400,000		$ 400,000		7,011,281	6,843,134
Interest	$ (10,577)	$ (39,105)	$ (10,152)	$ (43,193)
Short					330,235	311,372
Long					6,641,941	6,488,569
Fair value					$ 7,697,476	$ 7,082,022

Long-term debt_ Additional info

Long-term debt: Additional information (Details) $ in Thousands	May 22, 2013MXN ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Jun. 24, 2015USD ($)	Jun. 24, 2015MXN ($)	Dec. 31, 2013USD ($)	Dec. 31, 2013MXN ($)
Aerostar
Long-term debt:
Notional amount								$ 350,000	$ 4,471,000,000
Borrowings, interest rate						6.75%	6.75%
Aerostar
Long-term debt:
Proportion of interest in subsidiary		60.00%
Senior secured notes due on March 22, 2035
Long-term debt:
Notional amount		$ 400,000	$ 7,011,281,000	$ 400,000	$ 6,843,134,000
Borrowings, interest rate	5.75%
Debt Instrument, Quoted Yield	2.39%
Spread Credit	336
Senior secured notes due on March 22, 2035 | Aerostar
Long-term debt:
Notional amount						$ 50,000	$ 737,000,000

Stockholders' Equity_ (Details)

Stockholders' Equity: (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity
Total shares	300,000,000	300,000,000
Capital stock	$ 7,767,276	$ 7,767,276
B Series
Stockholders' Equity
Total shares	277,050,000	277,050,000
Capital stock	$ 7,173,079	$ 7,173,079
BB Series
Stockholders' Equity
Total shares	22,950,000	22,950,000
Capital stock	$ 594,197	$ 594,197

Stockholders' Equity_ Additiona

Stockholders' Equity: Additional information (Details) - MXN ($) $ in Thousands	Apr. 23, 2020	Apr. 24, 2019	Apr. 26, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stockholders' Equity
Capital stock				$ 7,767,276	$ 7,767,276
Capital redemption reserve				$ 11,554,572	11,554,572
Dividends paid, classified as financing activities	$ 2,463,000	$ 3,000,000	$ 2,034,000		3,000,000	$ 2,034,000
Dividend Declared, Tax on Dividends, Percentage				42.86%
Retained earnings				$ 12,131,610	10,438,563
Additional paid-in capital				45,258,134	42,825,290
Capital Contribution				14,759,918	12,900,414
Fixed Capital Shares [Member]
Stockholders' Equity
Capital stock				1,000	1,000
Variable Capital Shares [Member]
Stockholders' Equity
Capital stock				$ 7,766,276	$ 7,766,276

Income tax incurred and defer_3

Income tax incurred and deferred: IT Provision (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure by geographical areas:
Deferred IT		$ 932	$ 932
IT provision	$ 729,155	1,978,102	1,795,961
Mexico
Disclosure by geographical areas:
Current IT	631,471	1,864,384	1,766,083
Deferred IT	117,924	57,023	13,116
IT provision	749,395	1,921,407	1,779,199
Puerto Rico (Aerostar)
Disclosure by geographical areas:
Current IT	(16)	433
Deferred IT	42,546	38,146	33,879
IT provision	42,530	38,579	33,879
Colombia (Airplan)
Disclosure by geographical areas:
Current IT	2,916	110,910	(20,098)
Deferred IT	(65,686)	(92,794)	2,981
IT provision	$ (62,770)	$ 18,116	$ (17,117)

Income tax incurred and defer_4

Income tax incurred and deferred: Reconciliation (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2014
Disclosure of geographical areas [line items]
Consolidated income before IT and joint venture equity method:			$ 2,855,692	$ 7,661,741	$ 6,916,699
Consolidated income before IT and joint venture equity method:			2,855,692	7,661,737	6,916,699
Net (loss) income before taxes of Airplan and Aerostar			(65,672)	(843,352)	(297,179)
Net (loss) income before taxes of subsidiaries in Mexico not subject to IT			4,337	(100,793)	(89,685)
Income before provisions for income taxes			$ 2,794,357	$ 6,717,596	$ 6,529,835
Statutory IT rate			30.00%	30.00%	30.00%	30.00%
IT that would result from applying the IT rate to book profit before income taxes			$ 838,307	$ 2,015,279	$ 1,958,951
Non-deductible items and other permanent differences			10,496	11,941	15,126
Annual adjustment for tax inflation			(18,958)	(12,783)	12,101
Accounting disconnect inflation			(80,450)	(93,030)	(189,237)
Other non-taxable earnings					(17,742)
IT provision			$ 729,155	$ 1,978,102	$ 1,795,961
Effective IT rate			26.00%	29.00%	28.00%
Puerto Rico (Aerostar)
Disclosure of geographical areas [line items]
Statutory IT rate			10.00%
Effect by difference in rate of IT			$ 42,530	$ 38,579	$ 33,879
IT provision			$ 42,530	$ 38,579	$ 33,879
Colombia (Airplan)
Disclosure of geographical areas [line items]
Statutory IT rate	30.00%	31.00%	32.00%	33.00%	33.00%
Effect by difference in rate of IT			$ (62,770)	$ 18,116	$ (17,117)
IT provision			$ (62,770)	$ 18,116	$ (17,117)

Income tax incurred and defer_5

Income tax incurred and deferred: Temporary differences (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income tax:
Net deferred tax assets	$ 260,202	$ 257,512
Deferred tax liability (asset)	3,165,145	3,004,584	$ 3,081,668
Later than one year
Income tax:
Deferred tax liabilities	3,425,347	3,262,096
Temporary differences
Income tax:
Net deferred tax assets	31,019	48,079
Fair Value of Long term Debt
Income tax:
Net deferred tax assets	162,574	175,137
Allowance for doubtful accounts
Income tax:
Net deferred tax assets	66,609	34,296
Deferred tax liability (asset)	(66,609)	(34,296)	$ (36,874)
Fixed and intangible assets
Income tax:
Deferred tax liabilities	3,198,632	2,974,108
Temporary assets
Income tax:
Deferred tax liabilities	226,106	287,172
Amortization of expenses
Income tax:
Deferred tax liabilities	609	816
Colombia (Airplan) | Fixed and intangible assets
Income tax:
Deferred tax liabilities	647,571	695,212
Puerto Rico (Aerostar) | Fixed and intangible assets
Income tax:
Deferred tax liabilities	$ 1,032,799	$ 942,519

Income tax incurred and defer_6

Income tax incurred and deferred: Movement (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income tax:
Beginning Balances	$ 3,004,584	$ 3,081,668
IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar	65,777	(79,459)
Increase (decrease) in deferred tax liability (asset)	94,784	2,375
Ending Balances	3,165,145	3,004,584
Colombia (Airplan)
Income tax:
Increase (decrease) in deferred tax liability (asset)	(65,686)	(92,794)
Mexico
Income tax:
Increase (decrease) in deferred tax liability (asset)	117,924	57,023
Puerto Rico (Aerostar)
Income tax:
Increase (decrease) in deferred tax liability (asset)	42,546	38,146
Allowance for doubtful accounts
Income tax:
Beginning Balances	(34,296)	(36,874)
Increase (decrease) in deferred tax liability (asset)	(32,313)	2,578
Ending Balances	(66,609)	(34,296)
Allowance for doubtful accounts | Colombia (Airplan)
Income tax:
Increase (decrease) in deferred tax liability (asset)	(11,390)	2,467
Allowance for doubtful accounts | Mexico
Income tax:
Increase (decrease) in deferred tax liability (asset)	(20,923)	111
Concessioned assets
Income tax:
Beginning Balances	3,016,922	3,079,749
Increase (decrease) in deferred tax liability (asset)	84,970	(62,827)
Ending Balances	3,101,892	3,016,922
Concessioned assets | Colombia (Airplan)
Income tax:
Increase (decrease) in deferred tax liability (asset)	(73,994)	(161,556)
Concessioned assets | Mexico
Income tax:
Increase (decrease) in deferred tax liability (asset)	115,197	60,315
Concessioned assets | Puerto Rico (Aerostar)
Income tax:
Increase (decrease) in deferred tax liability (asset)	43,767	38,414
Unrealised foreign exchange gains (losses)
Income tax:
Beginning Balances	(42,814)	60,008
IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar	141,236	(102,370)
Increase (decrease) in deferred tax liability (asset)	(1,682)	(452)
Ending Balances	96,740	(42,814)
Unrealised foreign exchange gains (losses) | Colombia (Airplan)
Income tax:
Increase (decrease) in deferred tax liability (asset)	(461)	(184)
Unrealised foreign exchange gains (losses) | Puerto Rico (Aerostar)
Income tax:
Increase (decrease) in deferred tax liability (asset)	(1,221)	(268)
Other temporary differences
Income tax:
Beginning Balances	64,772	(21,215)
IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar	(75,456)	22,911
Increase (decrease) in deferred tax liability (asset)	43,809	63,076
Ending Balances	33,125	64,772
Other temporary differences | Colombia (Airplan)
Income tax:
Increase (decrease) in deferred tax liability (asset)	20,159	66,479
Other temporary differences | Mexico
Income tax:
Increase (decrease) in deferred tax liability (asset)	$ 23,650	$ (3,403)

Income tax incurred and defer_7

Income tax incurred and deferred: Aerostar Tax loss Carry forwards (Details) $ in Thousands	Dec. 31, 2020USD ($)
Income tax:
Unused tax losses for which no deferred tax asset recognised	$ 191,699
Tax loss Year 2012 Expiring in 2022
Income tax:
Unused tax losses for which no deferred tax asset recognised	7,085
Tax loss Year 2013 Expiring in 2023
Income tax:
Unused tax losses for which no deferred tax asset recognised	37,256
Tax loss Year 2014 Expiring in 2024
Income tax:
Unused tax losses for which no deferred tax asset recognised	25,545
Tax loss Year 2015 Expiring in 2025
Income tax:
Unused tax losses for which no deferred tax asset recognised	28,520
Tax loss Year 2016 Expiring in 2026
Income tax:
Unused tax losses for which no deferred tax asset recognised	27,745
Tax Loss Year 2017 Expiring In 2027
Income tax:
Unused tax losses for which no deferred tax asset recognised	22,248
Tax Loss Year 2018 Expiring In 2028
Income tax:
Unused tax losses for which no deferred tax asset recognised	10,600
Tax Loss Year 2019 Expiring In 2029
Income tax:
Unused tax losses for which no deferred tax asset recognised	1,975
Tax Loss Year 2020 Expiring In 2030
Income tax:
Unused tax losses for which no deferred tax asset recognised	$ 30,725

Income tax incurred and defer_8

Income tax incurred and deferred: Temporal differences (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2014
Income tax incurred and deferred:
Undistributed utilities	$ 3,200,543	$ 3,424,951
Tax rate	30.00%	30.00%	30.00%	30.00%
Deferred income tax liabilities unrecognized with the previous temporary differences	$ 960,163	$ 1,027,485

Income tax incurred and defer_9

Income tax incurred and deferred: Additional information (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018COP ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2014
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Share of profit (loss) of associates accounted for using equity method			$ 2,163,740	$ 6,119,361		$ 5,984,043
Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce current tax expense			$ 41,977	$ 36,613		$ 3,196
Applicable tax rate			30.00%	30.00%	30.00%	30.00%	30.00%
Asset Tax, percentage Refundable				10.00%
Investments rate of return			20.00%
Tax expense (income)			$ 729,155	$ 1,978,102		$ 1,795,961
Asset tax				932		932
Income taxes recovery			32,017	21,121
Current tax assets, current			$ 631,999	230,030
Number of previous years of AT paid			10 years
Aerostar
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Share of profit (loss) of associates accounted for using equity method				42,770
Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce current tax expense			$ 6,604,040
Airplan
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Share of profit (loss) of associates accounted for using equity method			$ 9,133	$ 325,349
Applicable tax rate			33.00%	33.00%
Current tax expense (income)			$ 2,916	$ 107,365		$ 31,298
Colombia (Airplan)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Applicable tax rate	30.00%	31.00%	32.00%	33.00%	33.00%	33.00%
Current tax expense (income)			$ 2,916	$ 110,910		$ (20,098)
Applicable tax rate, surcharge				6.00%	6.00%	6.00%
Profit (loss) from continuing operations					$ 800,000
Tax expense (income)			(62,770)	$ 18,116		$ (17,117)
Asset tax			$ (65,686)	(92,794)		2,981
Percentage Of Net Income on Net Worth			3.50%
Percentage Of Presumptive Income		0.00%	0.50%
Puerto Rico (Aerostar)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Applicable tax rate			10.00%
Current tax expense (income)			$ (16)	433
Tax expense (income)			42,530	38,579		33,879
Asset tax			$ 42,546	$ 38,146		$ 33,879

Balances and transactions wit_3

Balances and transactions with related parties: Receivable/Payable (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Related parties:
Accounts receivable	$ 197	$ 284
Payables to related parties	(53,795)	(97,312)
Payables to related parties, net	(53,598)	(97,028)
Autobuses de Oriente
Related parties:
Accounts receivable	197	284
Payables to related parties	(127)
Inversiones y Tecnicas Aeroportuarias, S. A. de C. V.
Related parties:
Payables to related parties	(53,257)	(96,769)
Key Management
Related parties:
Payables to related parties	$ (411)	$ (543)

Balances and transactions wit_4

Balances and transactions with related parties: Transactions (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related parties:
Revenue	$ 12,624,731	$ 16,821,638	$ 15,410,241
Technical assistance (Note 15.4)	(175,615)	(404,086)	(386,249)
Leasing	(6,304)	(5,232)
Autobuses de Oriente
Related parties:
Revenue	7,968	14,349	14,455
Autobuses Golfo Pacfico
Related parties:
Revenue	4,862	7,290	7,014
Coordinados de Mxico de Oriente, S. A. de C. V.
Related parties:
Revenue	164	157	150
Related parties
Related parties:
Leasing	(6,061)	(5,340)	(5,232)
Cleaning services	$ (11,848)	$ (11,544)	$ (10,854)

Balances and transactions wit_5

Balances and transactions with related parties: Compensation of key personnel (Details) - Key Management - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related parties:
Short-term salaries and other benefits paid to key personnel (Note 18.17)	$ 137,272	$ 109,747	$ 119,202
Directors' remuneration expense	$ 8,571	$ 9,146	$ 8,695

Balances and transactions wit_6

Balances and transactions with related parties: Additional information (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of transactions between related parties [line items]
Explanation of nature and extent of renewal and termination options	The agreement is for an initial term of 15 years and renews automatically for subsequent five year periods, unless one of the parts issues the other a cancellation notice within a determined term prior to the programmed expiration date. The Company can only exercise its termination right through a resolution of the shareholders
Explanation of significant terms of service concession arrangement that may affect amount, timing and certainty of future cash flows	In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2,000 (approximately Ps.37,700).
Key management personnel compensation	$ 66,083	$ 41,411	$ 53,268
Technical assistance amount	175,615	404,086	386,249
Aerostar and Airplan
Disclosure of transactions between related parties [line items]
Key management personnel compensation	15,650	17,381	16,350
Inversiones y Tecnicas Aeroportuarias, S. A. de C. V.
Disclosure of transactions between related parties [line items]
Technical assistance amount	$ 175,615	$ 404,086	$ 386,249

Commitments and contingencies_2

Commitments and contingencies: Future payments (Details) $ in Thousands	Dec. 31, 2020MXN ($)
Commitments:
Minimum lease payments payable under non-cancellable operating lease	$ 24,848
2019
Commitments:
Minimum lease payments payable under non-cancellable operating lease	5,626
Later than one year
Commitments:
Minimum lease payments payable under non-cancellable operating lease	$ 19,222

Commitments and contingencies_3

Commitments and contingencies: Investment commitments (Details) $ in Thousands	Dec. 31, 2020MXN ($)
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	$ 8,260,774
2021
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	5,460,586
2022
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	1,907,832
2023
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	$ 892,356

Commitments and contingencies_4

Commitments and contingencies: Additional information (Details) $ in Thousands	Aug. 21, 2019MXN ($)	Sep. 20, 2017USD ($)	Mar. 21, 2015USD ($)	Mar. 21, 2015MXN ($)	Dec. 31, 2020USD ($)room	Dec. 31, 2020MXN ($)room	Dec. 31, 2019USD ($)D	Dec. 31, 2019MXN ($)D	Dec. 31, 2018MXN ($)	Sep. 30, 2020MXN ($)	Aug. 19, 2020MXN ($)
Commitments and contingencies:
Contingent rents recognised as expense			$ 23,550	$ 469
Leasing						$ 6,304		$ 5,232
Number of hotel rooms | room					450	450
Service expenses		$ 29,700,000				$ 275,206		325,613	$ 310,065
Insurance revenue					$ 7,300,000	158,906	$ 15,700,000	289,822
Other income						158,881		204,719	$ 134,637
Restricted cash and cash equivalents						$ 5,055		$ 165,622
Number of days extension for concession contracts | D							541	541
Percentage of amortization of concessionaries per year					15.00%	15.00%
Estimated financial effect	$ 73,000
Deferment investments										$ 2,292,355	$ 2,292,355
Maximum
Commitments and contingencies:
Period that Amparo proceedings will resolve	2 years
Aeropuerto de Cancun
Commitments and contingencies:
Estimated financial effect						$ 865,000
Aeropuerto de Cancun | Legal proceedings contingent liability
Commitments and contingencies:
Legal proceedings provision						$ 116,000

Summary of the main accountin_4

Summary of the main accounting policies: Consolidation (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Aeropuerto de Cancun
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Cozumel, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Mrida, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Huatulco, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Oaxaca, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Veracruz, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Villahermosa, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Tapachula, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aeropuerto de Minatitln, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Cancun Airport Services, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Aerostar Airport Holdings, LLC
Subsidiary
Proportion of interest in subsidiary	60.00%	60.00%
Sociedad Operadora de Aeropuertos Centro Norte, S.A.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
RH Asur, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Servicios Aeroportuarios del Sureste, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Asur FBO, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Caribbean Logistics, S. A. de C. V.
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%
Cargo RF, S. A. de C. V
Subsidiary
Proportion of interest in subsidiary	100.00%	100.00%

Summary of the main accountin_5

Summary of the main accounting policies: Condensed statement of financial position (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Financial Position
Cash and cash equivalents	$ 5,192,628	$ 6,192,679	$ 4,584,507	$ 4,677,454
Restricted cash and cash equivalents	5,055	165,622
Other current assets	221,792	160,905
Total current assets	7,716,049	7,845,856
Financial liabilities:
Current liabilities	(2,767,087)	(2,560,020)
Land, furniture and equipment	504,385	520,623	558,480
Long-term debt	(6,641,941)	(6,488,569)
Deferred income tax	(3,165,145)	(3,004,584)	(3,081,668)
Shareholders' equity	41,693,206	38,771,177	36,681,389	$ 33,688,301
Consolidated Statements of Comprehensive Income
Revenue	12,624,731	16,821,638	15,410,241
Other income	158,881	204,719	134,637
Deferred income tax		(932)	(932)
Net (loss) income for the year	2,126,537	5,683,635	5,119,806
Foreign currency translation	800,638	(588,575)	116,059
Total comprehensive income	2,922,029	5,089,788	5,240,557
Aerostar Airport Holdings, LLC
Consolidated Statements of Financial Position
Cash and cash equivalents	804,634	698,466	868,095
Restricted cash and cash equivalents	5,055	165,622	47,332
Other current assets	566,031	133,992	175,479
Total current assets	1,375,720	998,080	1,090,906
Financial liabilities:
Current liabilities	(606,433)	(672,943)	(640,785)
Working capital	769,287	325,137	450,121
Land, furniture and equipment	151,971	160,186	174,450
Intangible assets, airport concessions - Net	13,535,370	12,956,965	13,587,071
Other long term assets	32,578	16,759	544
Long-term debt	(7,171,278)	(6,799,941)	(7,282,268)
Accounts payable to the Company	(104,065)	(372,798)	(1,152,805)
Other long-term liabilities	(19,864)	(19,783)	(21,609)
Deferred income tax	(448,829)	(371,984)	(330,999)
Shareholders' equity	6,745,170	5,894,541	5,424,505
Consolidated Statements of Comprehensive Income
Revenue	2,902,238	3,306,149	3,025,267
Operating costs and expenses	(1,956,081)	(2,270,055)	(2,098,323)
Other income	158,906	204,074	134,637
Comprehensive financial cost - Net	(495,443)	(485,037)	(538,268)
Deferred income tax	(60,684)	(55,781)	(62,252)
Net (loss) income for the year	548,936	699,350	461,061
Foreign currency translation	(301,695)	(229,314)	(5,772)
Total comprehensive income	$ 247,241	$ 470,036	$ 455,289

Summary of the main accountin_6

Summary of the main accounting policies: Land, furniture and equipment (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Furniture equipment | Minimum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	10 years	10 years
Furniture equipment | Maximum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	20 years	20 years
Machinery | Minimum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	10 years	10 years
Machinery | Maximum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	20 years	20 years
Computer equipment | Minimum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	20 years	20 years
Computer equipment | Maximum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	33 years	33 years
Transportation equipment | Minimum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	20 years	20 years
Transportation equipment | Maximum
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	25 years	25 years
Improvements to leased premises
Land, furniture and equipment:
Useful life measured as period of time, property, plant and equipment	10 years	10 years

Summary of the main accountin_7

Summary of the main accounting policies: Licenses and commercial direct operation (Details)	12 Months Ended
	Dec. 31, 2020
Licences and ODC
Disclosure of detailed information about intangible assets [line items]
Useful lives or amortisation rates, intangible assets other than goodwill	29 years
ODC
Disclosure of detailed information about intangible assets [line items]
Useful lives or amortisation rates, intangible assets other than goodwill	29 years
Commercial Right's (Unregulated Activity) | Aerostar
Disclosure of detailed information about intangible assets [line items]
Useful lives or amortisation rates, intangible assets other than goodwill	34 years
Commercial Right's (Unregulated Activity) | Airplan
Disclosure of detailed information about intangible assets [line items]
Useful lives or amortisation rates, intangible assets other than goodwill	13 years

Summary of the main accountin_8

Summary of the main accounting policies: Additional information (Details) $ in Thousands, $ in Thousands, shares in Millions	Feb. 20, 2020USD ($)	Dec. 31, 2020MXN ($)$ / sharesshares	Dec. 31, 2019MXN ($)$ / sharesshares	Dec. 31, 2018MXN ($)	Dec. 31, 2014	Apr. 12, 2021	Feb. 20, 2020MXN ($)
Revenue From Regulated Services
Closing foreign exchange rate		19.91	18.86			20.305
Gain (loss) that relates to identifiable assets acquired or liabilities assumed in business combination and is of such size, nature or incidence that disclosure is relevant to understanding combined entity's financial statements				$ 7,029,200
Investments in joint ventures accounted for using equity method		$ 8,466
Restricted cash and cash equivalents		$ 5,055	$ 165,622
Original concession period for operating rights		50 years
Concession period for operating rights		28 years
Applicable tax rate		30.00%	30.00%	30.00%	30.00%
Termination benefits expense		$ 2,382	$ 1,922	$ 1,595
Income from continuing operations attributable to owners of parent		$ 1,972,319	$ 5,465,822	$ 4,987,601
Weighted average number of ordinary shares outstanding | shares		300	300
Basic earnings per share | $ / shares		$ 6.5744	$ 18.22
Airport Development Group, LLC
Revenue From Regulated Services
Percentage Of Equity Interest Acquired	50.00%
Investments in joint ventures accounted for using equity method	$ 500						$ 10,556
Airplan
Revenue From Regulated Services
Closing foreign exchange rate | $ / shares		171.530	173.630
Original concession period for operating rights		40 years
Concession period for operating rights		12 years
Applicable tax rate		33.00%	33.00%
Airplan | Minimum
Revenue From Regulated Services
Original concession period for operating rights		24 years
Aerostar
Revenue From Regulated Services
Closing foreign exchange rate | $ / shares		19.91	18.86
Restricted cash and cash equivalents		$ 5,055	$ 26,849
Original concession period for operating rights		40 years
Concession period for operating rights		33 years
Aerostar
Revenue From Regulated Services
Applicable tax rate		10.00%	10.00%

Financial risk management_ Exch

Financial risk management: Exchange rate risk (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial risk management:
Asset	$ 60,411,211	$ 57,515,881
Liability	(18,718,005)	(18,744,704)
Exchange rate risk
Financial risk management:
Asset	88,426	164,370
Liability	(5,578)	(4,853)
Net assets at period closing	$ 82,848	$ 159,517

Financial risk management_ Liqu

Financial risk management: Liquidity position (Details) $ in Thousands, $ in Thousands	Dec. 30, 2020	Sep. 11, 2020	Jun. 29, 2020	Apr. 23, 2020MXN ($)	Apr. 01, 2020USD ($)	Apr. 01, 2020MXN ($)	Apr. 24, 2019MXN ($)	Apr. 26, 2018MXN ($)	Jun. 02, 2015COP ($)	Jun. 02, 2015MXN ($)	Oct. 31, 2017MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2021MXN ($)	Dec. 31, 2020COP ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)	Sep. 30, 2020MXN ($)	Aug. 19, 2020MXN ($)	Dec. 31, 2017MXN ($)
Disclosure of risk management strategy related to hedge accounting [line items]
Cash and equivalents													$ 6,192,679	$ 4,584,507				$ 5,192,628			$ 4,677,454
Total Debt													13,712,893			$ 440,000,000		13,900,346
Debt term short													549,607					1,138,750
Debt term long													13,163,286					12,761,596
Deferment investments																			$ 2,292,355	$ 2,292,355
Dividends				$ 2,463,000			$ 3,000,000	$ 2,034,000					3,000,000	2,034,000
Disposal of loans									$ 440,000,000,000	$ 2,897,404		$ 243,998	152,047	$ 3,090,124
Mexico
Disclosure of risk management strategy related to hedge accounting [line items]
Cash and equivalents													4,991,567					4,058,495
Total Debt													3,992,467					3,971,210
Debt term short													23,998					322,209
Debt term long													3,968,469					3,649,001
Deferment investments																				$ 2,292,355
Loans received																		1,500,000
Puerto Rico (Aerostar)
Disclosure of risk management strategy related to hedge accounting [line items]
Cash and equivalents													698,466					804,634
Total Debt													6,799,941					7,171,278
Debt term short													311,372					529,337
Debt term long													6,488,569					6,641,941
Term of loan	3 years
Disposal of loans					$ 10,000	$ 239,200
Colombia (Airplan)
Disclosure of risk management strategy related to hedge accounting [line items]
Cash and equivalents													502,646					329,499
Total Debt													2,920,485					2,757,858
Debt term short													214,237					287,204
Debt term long													2,706,248					2,470,654
Term of loan		1 year
Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Cash and equivalents													$ 6,192,679					5,192,628
Forecast | Mexico
Disclosure of risk management strategy related to hedge accounting [line items]
Deferment investments															$ 5,460,586
BBVA Bancomer, S. A.
Disclosure of risk management strategy related to hedge accounting [line items]
Disposal of loans											$ 2,000,000
BBVA Bancomer, S. A. | Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Total Debt																		1,500,000
Bancolombia | Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Total Debt																	$ 20,000	$ 399,010
Banco Popular De Puerto Rico
Disclosure of risk management strategy related to hedge accounting [line items]
Term of loan	3 years
Banco Popular De Puerto Rico | Mexico
Disclosure of risk management strategy related to hedge accounting [line items]
Term of loan			18 months

Financial risk management_ Li_2

Financial risk management: Liquidity risk (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of risk management strategy related to hedge accounting [line items]
Long-term debt	$ 6,641,941	$ 6,488,569
Accounts payable and accrued expenses (Note 9)	1,598,404	1,799,330
Three months
Disclosure of risk management strategy related to hedge accounting [line items]
Bank loans and interest	11,176	14,639
Long-term debt	114,420	111,676
Suppliers	353,806	245,100
Accounts payable and accrued expenses (Note 9)	1,187,345	1,378,657
Later than three months and not later than one year [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Bank loans and interest	797,339	223,596
Long-term debt	215,815	199,696
2021
Disclosure of risk management strategy related to hedge accounting [line items]
Bank loans and interest	2,238,558	228,073
Long-term debt	233,123	204,492
Later than two years and not later than five years [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Bank loans and interest	3,881,097	6,446,644
Long-term debt	$ 6,408,818	$ 6,284,077

Financial risk management_ Shor

Financial risk management: Short term liquidity (Details) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial risk management:
Current assets	$ 7,716,049	$ 7,845,856
Current liabilities	2,767,087	2,560,020
Short term position (liquidity)	$ 4,948,962	$ 5,285,836

Financial risk management_ Addi

Financial risk management: Additional information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018	Apr. 12, 2021
Revenue From Regulated Services
Borrowings, adjustment to interest rate basis	1.25%	1.25%
Closing foreign exchange rate	19.91	18.86		20.305
Foreign exchange gain (loss)	$ 81,500	$ 150,400
Receivables due from related parties	197	$ 284
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets	$ 128,000
Percentage of increase decrease in foreign exchange rate		5.00%	5.00%
Cancun Airport Services, S. A. de C. V.
Revenue From Regulated Services
Percentage of entity's revenue	49.90%	55.02%
Grupo Mexicana
Revenue From Regulated Services
Receivables due from related parties	$ 128,000
Mexico
Revenue From Regulated Services
Borrowings, adjustment to interest rate basis	7.00%
Notes received pledged	$ 185,140
Colombia (Airplan)
Revenue From Regulated Services
Notes received pledged	$ 60,617

Critical accounting judgments_2

Critical accounting judgments and key sources of estimation uncertainty: (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Ifrs Statement [Line Items]
Expected Revenue From Airplan	$ 17,540,245	$ 19,217,035
Original concession period for operating rights	50 years
Airplan
Ifrs Statement [Line Items]
Original concession period for operating rights	40 years
Minimum | Airplan
Ifrs Statement [Line Items]
Original concession period for operating rights	24 years

Consolidated statements of ca_4

Consolidated statements of cash flows: (Details) $ in Thousands, $ in Thousands	Jun. 02, 2015COP ($)	Jun. 02, 2015MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]
Bank loans (Note 10)			$ 808,515	$ 238,235
Bank loans (Note 10)			6,119,655	6,674,717
Long-term debt (Note 11)			6,641,941	6,488,569
Interest expense			926,312	1,084,293	$ 1,230,651
Proceeds from bank loans			306,241
Interest paid			(962,993)	(1,064,764)	(1,139,071)
Bank loans paid (Note 10)	$ (440,000,000)	$ (2,897,404)	(243,998)	(152,047)	(3,090,124)
Long-term debt
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]
Accounts payable			330,235	311,372	324,590
Long-term debt (Note 11)			6,641,941	6,488,569	6,957,678
Non-current portion of non-current secured bank loans received			6,799,941	7,282,268	7,489,465
Interest expense			450,806	444,028	475,110
Interest paid			(476,927)	(486,164)	(646,418)
Bank loans paid (Note 10)			(253,925)	(205,308)
Foreign currency translation			452,281	(234,883)	(35,889)
Non-current portion of non-current secured bank loans received			6,972,176	6,799,941	7,282,268
Bank Loans
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]
Bank loans (Note 10)			808,515	238,235	175,515
Bank loans (Note 10)			6,119,655	6,674,717	7,042,598
Non-current portion of non-current secured bank loans received			6,912,952	7,218,113	10,494,853
Interest expense			398,899	601,873	696,641
Proceeds from bank loans			306,241
Interest paid			(466,066)	(578,600)	(492,653)
Bank loans paid (Note 10)			(245,520)	(152,047)	(3,090,124)
Foreign currency translation			21,664	(176,387)	(166,301)
Exchange (income) / loss on foreign currency					(224,303)
Non-current portion of non-current secured bank loans received			$ 6,928,170	$ 6,912,952	$ 7,218,113

Subsequent Event_ Investment co

Subsequent Event: Investment commitments (Details) - MXN ($) $ in Thousands	Apr. 07, 2021	Dec. 31, 2020
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments		$ 8,260,774
COVID-19
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	$ 5,315,429
2021
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments		5,460,586
2021 | COVID-19
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	3,064,148
2022
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments		1,907,832
2022 | COVID-19
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	1,793,811
2023
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments		$ 892,356
2023 | COVID-19
Disclosure of non-adjusting events after reporting period [line items]
Contractual capital commitments	$ 457,470

Subsequent Event_ (Details)

Subsequent Event: (Details) $ in Thousands, $ in Thousands	Mar. 03, 2021MXN ($)	Feb. 19, 2021MXN ($)	Feb. 18, 2021USD ($)	Feb. 18, 2021MXN ($)	May 12, 2020USD ($)	May 12, 2020MXN ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020MXN ($)
Puerto Rico (Aerostar)
Disclosure of non-adjusting events after reporting period [line items]
Amount Of Grant offer, CARES ACT					$ 33,417	$ 717,590	$ 33,417	$ 717,590
Impact on revenue from operations | Puerto Rico (Aerostar)
Disclosure of non-adjusting events after reporting period [line items]
Amount Of Grant offer, CARES ACT			$ 10,577	$ 210,574
Agreements With Third Parties
Disclosure of non-adjusting events after reporting period [line items]
Advance payment agreed to pay by FONATUR		$ 50,000
Total consideration for sale of land		286,283
Remaining balance to be paid before july1, 2021		$ 236,283
Initial Payment received for sale of land	$ 50,000