United Airlines 10-Q 20 Jul 23 2023 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2023	Jul. 13, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-06033
Entity Registrant Name	United Airlines Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-2675207
Entity Address, Address Line One	233 South Wacker Drive,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	(872)
Local Phone Number	825-4000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		327,979,705
Document Fiscal Period Focus	Q2
Amendment Flag	false
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000100517
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	UAL
Security Exchange Name	NASDAQ
Preferred Stock Purchase Rights
Entity Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
United Airlines, Inc.
Entity Information [Line Items]
Entity File Number	001-10323
Entity Registrant Name	United Airlines, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-2099724
Entity Address, Address Line One	233 South Wacker Drive,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	(872)
Local Phone Number	825-4000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,000
Entity Central Index Key	0000319687

Statements of Consolidated Oper

Statements of Consolidated Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating revenue:
Total operating revenue	$ 14,178	$ 12,112	$ 25,607	$ 19,678
Operating expense:
Salaries and related costs	3,710	2,836	7,032	5,623
Aircraft fuel	2,820	3,811	5,994	6,041
Landing fees and other rent	765	668	1,482	1,280
Aircraft maintenance materials and outside repairs	686	527	1,388	934
Depreciation and amortization	669	611	1,324	1,222
Regional capacity purchase	599	567	1,214	1,132
Distribution expenses	487	393	890	619
Aircraft rent	49	67	105	128
Special charges	859	112	873	104
Other operating expenses	2,017	1,642	3,831	3,093
Total operating expense	12,661	11,234	24,133	20,176
Operating income (loss)	1,517	878	1,474	(498)
Nonoperating income (expense):
Interest expense	(493)	(420)	(979)	(844)
Interest income	216	33	386	38
Interest capitalized	42	22	80	46
Unrealized gains (losses) on investments, net	84	(40)	108	(40)
Miscellaneous, net	21	(14)	62	5
Total nonoperating expense, net	(130)	(419)	(343)	(795)
Income (loss) before income tax expense (benefit)	1,387	459	1,131	(1,293)
Income tax expense (benefit)	312	130	250	(245)
Net income (loss)	$ 1,075	$ 329	$ 881	$ (1,048)
Earnings (loss) per share, basic (in dollars per share)	$ 3.28	$ 1.01	$ 2.69	$ (3.22)
Earnings (loss) per share, diluted (in dollars per share)	$ 3.24	$ 1	$ 2.66	$ (3.22)
Passenger revenue
Operating revenue:
Total operating revenue	$ 13,002	$ 10,829	$ 23,276	$ 17,177
Cargo
Operating revenue:
Total operating revenue	362	574	760	1,201
Other operating revenue
Operating revenue:
Total operating revenue	$ 814	$ 709	$ 1,571	$ 1,300

Statements of Consolidated Comp

Statements of Consolidated Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,075	$ 329	$ 881	$ (1,048)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(34)	4	(69)	9
Investments and other	(24)	(11)	(3)	(11)
Total other comprehensive loss, net of tax	(58)	(7)	(72)	(2)
Total comprehensive income (loss), net	$ 1,017	$ 322	$ 809	$ (1,050)

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 9,605	$ 7,166
Short-term investments	9,533	9,248
Restricted cash	38	45
Receivables, less allowance for credit losses (2023 — $15; 2022 — $11)	2,004	1,801
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2023 — $648; 2022 — $610)	1,290	1,109
Prepaid expenses and other	836	689
Total current assets	23,306	20,058
Operating property and equipment:
Flight equipment	45,784	42,775
Other property and equipment	9,822	9,334
Purchase deposits for flight equipment	3,102	2,820
Total operating property and equipment	58,708	54,929
Less — Accumulated depreciation and amortization	(21,580)	(20,481)
Total operating property and equipment, net	37,128	34,448
Operating lease right-of-use assets	3,995	3,889
Other assets:
Goodwill	4,527	4,527
Intangibles, less accumulated amortization (2023 — $1,477; 2022 — $1,472)	2,744	2,762
Restricted cash	238	210
Deferred income taxes	0	91
Investments in affiliates and other, less allowance for credit losses (2023 — $21; 2022 — $21)	1,403	1,373
Total other assets	8,912	8,963
Total assets	73,341	67,358
Current liabilities:
Accounts payable	4,172	3,395
Accrued salaries and benefits	3,223	1,971
Advance ticket sales	10,102	7,555
Frequent flyer deferred revenue	2,841	2,693
Current maturities of long-term debt	3,580	2,911
Current maturities of operating leases	571	561
Current maturities of finance leases	225	104
Current maturities of other financial liabilities	35	23
Other	826	779
Total current liabilities	25,575	19,992
Long-term debt	26,713	28,283
Long-term obligations under operating leases	4,607	4,459
Long-term obligations under finance leases	145	115
Other liabilities and deferred credits:
Frequent flyer deferred revenue	4,183	3,982
Pension liability	804	747
Postretirement benefit liability	641	671
Deferred income taxes	133	0
Other financial liabilities	1,468	844
Other	1,367	1,369
Total other liabilities and deferred credits	8,596	7,613
Commitments and contingencies
Stockholders' equity:
Preferred stock	0	0
Common stock at par, $0.01 par value; authorized 1,000,000,000 shares; outstanding 327,979,189 and 326,930,321 shares at June 30, 2023 and December 31, 2022, respectively	4	4
Additional capital invested	8,945	8,986
Stock held in treasury, at cost	(3,442)	(3,534)
Retained earnings	2,095	1,265
Accumulated other comprehensive income	103	175
Total stockholders' equity	7,705	6,896
Total liabilities and stockholders' equity	$ 73,341	$ 67,358

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Receivables, allowance for credit losses	$ 15	$ 11
Aircraft fuel, spare, parts and supplies, obsolescence allowance	648	610
Intangibles, accumulated amortization	1,477	1,472
Allowance for credit losses on investments in affiliates and other	$ 21	$ 21
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	1,000,000,000	1,000,000,000
Common shares, outstanding (in shares)	327,979,189	326,930,321

Condensed Statements of Consoli

Condensed Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Cash Flows from Operating Activities:
Net cash provided by operating activities		$ 6,941	$ 4,167
Cash Flows from Investing Activities:
Capital expenditures, net of flight equipment purchase deposit returns		(3,263)	(952)
Purchases of short-term and other investments		(6,876)	(3,302)
Proceeds from sale of short-term and other investments		6,702	215
Proceeds from sale of property and equipment		9	138
Other, net		1	(13)
Net cash used in investing activities		(3,427)	(3,914)
Cash Flows from Financing Activities:
Proceeds from issuance of debt and other financing liabilities, net of discounts and fees		1,591	212
Payments of long-term debt, finance leases and other financing liabilities		(2,614)	(1,795)
Other, net		(31)	(71)
Net cash used in financing activities		(1,054)	(1,654)
Net increase (decrease) in cash, cash equivalents and restricted cash		2,460	(1,401)
Cash, cash equivalents and restricted cash at beginning of the period		7,421	18,533
Cash, cash equivalents and restricted cash at end of the period	[1]	9,881	17,132
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt, finance leases and other		559	0
Right-of-use assets acquired through operating leases		434	84
Lease modifications and lease conversions		349	82
Investment interests received in exchange for goods and services		$ 25	$ 44
[1]The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the consolidated balance sheet: Current assets: Cash and cash equivalents $ 9,605 $ 16,885 Restricted cash — Current 38 43 Restricted cash — Non-Current 238 204 Total cash, cash equivalents and restricted cash $ 9,881 $ 17,132

Condensed Statements of Conso_2

Condensed Statements of Consolidated Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023		Dec. 31, 2022	Jun. 30, 2022		Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 9,605		$ 7,166	$ 16,885
Restricted cash — Current	38		45	43
Restricted cash — Non-Current	238		210	204
Total cash, cash equivalents and restricted cash	$ 9,881	[1]	$ 7,421	$ 17,132	[1]	$ 18,533
[1]The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the consolidated balance sheet: Current assets: Cash and cash equivalents $ 9,605 $ 16,885 Restricted cash — Current 38 43 Restricted cash — Non-Current 238 204 Total cash, cash equivalents and restricted cash $ 9,881 $ 17,132

Statements of Consolidated Stoc

Statements of Consolidated Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Capital Invested	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Balance beginning (in shares) at Dec. 31, 2021		323,800,000
Balance beginning at Dec. 31, 2021	$ 5,029	$ 4	$ 9,156	$ (3,814)	$ 625	$ (942)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,048)				(1,048)
Other comprehensive loss	(2)					(2)
Stock-settled share-based compensation	55		55
Stock issued for share-based awards, net of shares withheld for tax (in shares)		2,900,000
Stock issued for share-based awards, net of shares withheld for tax	(70)		(241)	263	(92)
Balance ending (in shares) at Jun. 30, 2022		326,700,000
Balance ending at Jun. 30, 2022	3,964	$ 4	8,970	(3,551)	(515)	(944)
Balance beginning (in shares) at Mar. 31, 2022		326,700,000
Balance beginning at Mar. 31, 2022	3,624	$ 4	8,953	(3,552)	(844)	(937)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	329				329
Other comprehensive loss	(7)					(7)
Stock-settled share-based compensation	17		17
Stock issued for share-based awards, net of shares withheld for tax	1			1
Balance ending (in shares) at Jun. 30, 2022		326,700,000
Balance ending at Jun. 30, 2022	$ 3,964	$ 4	8,970	(3,551)	(515)	(944)
Balance beginning (in shares) at Dec. 31, 2022	326,930,321	326,900,000
Balance beginning at Dec. 31, 2022	$ 6,896	$ 4	8,986	(3,534)	1,265	175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	881				881
Other comprehensive loss	(72)					(72)
Stock-settled share-based compensation	32		32
Stock issued for share-based awards, net of shares withheld for tax (in shares)		1,100,000
Stock issued for share-based awards, net of shares withheld for tax	$ (32)		(73)	92	(51)
Balance ending (in shares) at Jun. 30, 2023	327,979,189	328,000,000
Balance ending at Jun. 30, 2023	$ 7,705	$ 4	8,945	(3,442)	2,095	103
Balance beginning (in shares) at Mar. 31, 2023		328,000,000
Balance beginning at Mar. 31, 2023	6,668	$ 4	8,926	(3,443)	1,020	161
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,075				1,075
Other comprehensive loss	(58)					(58)
Stock-settled share-based compensation	21		21
Stock issued for share-based awards, net of shares withheld for tax	$ (1)		(2)	1	0
Balance ending (in shares) at Jun. 30, 2023	327,979,189	328,000,000
Balance ending at Jun. 30, 2023	$ 7,705	$ 4	$ 8,945	$ (3,442)	$ 2,095	$ 103

Statements of Consolidated Op_2

Statements of Consolidated Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating revenue:
Total operating revenue	$ 14,178	$ 12,112	$ 25,607	$ 19,678
Operating expense:
Salaries and related costs	3,710	2,836	7,032	5,623
Aircraft fuel	2,820	3,811	5,994	6,041
Landing fees and other rent	765	668	1,482	1,280
Aircraft maintenance materials and outside repairs	686	527	1,388	934
Depreciation and amortization	669	611	1,324	1,222
Regional capacity purchase	599	567	1,214	1,132
Distribution expenses	487	393	890	619
Aircraft rent	49	67	105	128
Special charges	859	112	873	104
Other operating expenses	2,017	1,642	3,831	3,093
Total operating expense	12,661	11,234	24,133	20,176
Operating income (loss)	1,517	878	1,474	(498)
Nonoperating income (expense):
Interest expense	(493)	(420)	(979)	(844)
Interest capitalized	42	22	80	46
Interest income	216	33	386	38
Unrealized gains (losses) on investments, net	84	(40)	108	(40)
Miscellaneous, net	21	(14)	62	5
Total nonoperating expense, net	(130)	(419)	(343)	(795)
Income (loss) before income tax expense (benefit)	1,387	459	1,131	(1,293)
Income tax expense (benefit)	312	130	250	(245)
Net income (loss)	1,075	329	881	(1,048)
United Airlines, Inc.
Operating revenue:
Total operating revenue	14,178	12,112	25,607	19,678
Operating expense:
Salaries and related costs	3,710	2,836	7,032	5,623
Aircraft fuel	2,820	3,811	5,994	6,041
Landing fees and other rent	765	668	1,482	1,280
Aircraft maintenance materials and outside repairs	686	527	1,388	934
Depreciation and amortization	669	611	1,324	1,222
Regional capacity purchase	599	567	1,214	1,132
Distribution expenses	487	393	890	619
Aircraft rent	49	67	105	128
Special charges	859	112	873	104
Other operating expenses	2,016	1,642	3,830	3,092
Total operating expense	12,660	11,234	24,132	20,175
Operating income (loss)	1,518	878	1,475	(497)
Nonoperating income (expense):
Interest expense	(493)	(420)	(979)	(844)
Interest capitalized	42	22	80	46
Interest income	216	33	386	38
Unrealized gains (losses) on investments, net	84	(40)	108	(40)
Miscellaneous, net	21	(14)	62	5
Total nonoperating expense, net	(130)	(419)	(343)	(795)
Income (loss) before income tax expense (benefit)	1,388	459	1,132	(1,292)
Income tax expense (benefit)	313	129	251	(245)
Net income (loss)	1,075	330	881	(1,047)
Passenger revenue
Operating revenue:
Total operating revenue	13,002	10,829	23,276	17,177
Passenger revenue | United Airlines, Inc.
Operating revenue:
Total operating revenue	13,002	10,829	23,276	17,177
Cargo
Operating revenue:
Total operating revenue	362	574	760	1,201
Cargo | United Airlines, Inc.
Operating revenue:
Total operating revenue	362	574	760	1,201
Other operating revenue
Operating revenue:
Total operating revenue	814	709	1,571	1,300
Other operating revenue | United Airlines, Inc.
Operating revenue:
Total operating revenue	$ 814	$ 709	$ 1,571	$ 1,300

Statements of Consolidated Co_2

Statements of Consolidated Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net income (loss)	$ 1,075	$ 329	$ 881	$ (1,048)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(34)	4	(69)	9
Investments and other	(24)	(11)	(3)	(11)
Total other comprehensive loss, net of tax	(58)	(7)	(72)	(2)
Total comprehensive income (loss), net	1,017	322	809	(1,050)
United Airlines, Inc.
Net income (loss)	1,075	330	881	(1,047)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(34)	4	(69)	9
Investments and other	(24)	(11)	(3)	(11)
Total other comprehensive loss, net of tax	(58)	(7)	(72)	(2)
Total comprehensive income (loss), net	$ 1,017	$ 323	$ 809	$ (1,049)

Consolidated Balance Sheets (_3

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 9,605	$ 7,166
Short-term investments	9,533	9,248
Restricted cash	38	45
Receivables, less allowance for credit losses (2023 — $15; 2022 — $11)	2,004	1,801
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2023 — $648; 2022 — $610)	1,290	1,109
Prepaid expenses and other	836	689
Total current assets	23,306	20,058
Operating property and equipment:
Flight equipment	45,784	42,775
Other property and equipment	9,822	9,334
Purchase deposits for flight equipment	3,102	2,820
Total operating property and equipment	58,708	54,929
Less — Accumulated depreciation and amortization	(21,580)	(20,481)
Total operating property and equipment, net	37,128	34,448
Operating lease right-of-use assets	3,995	3,889
Other assets:
Goodwill	4,527	4,527
Intangibles, less accumulated amortization (2023 — $1,477; 2022 — $1,472)	2,744	2,762
Restricted cash	238	210
Deferred income taxes	0	91
Investments in affiliates and other, less allowance for credit losses (2023 — $21; 2022 —$21)	1,403	1,373
Total other assets	8,912	8,963
Total assets	73,341	67,358
Current liabilities:
Accounts payable	4,172	3,395
Accrued salaries and benefits	3,223	1,971
Advance ticket sales	10,102	7,555
Frequent flyer deferred revenue	2,841	2,693
Current maturities of long-term debt	3,580	2,911
Current maturities of operating leases	571	561
Current maturities of finance leases	225	104
Current maturities of other financial liabilities	35	23
Other	826	779
Total current liabilities	25,575	19,992
Long-term debt	26,713	28,283
Long-term obligations under operating leases	4,607	4,459
Long-term obligations under finance leases	145	115
Other liabilities and deferred credits:
Frequent flyer deferred revenue	4,183	3,982
Pension liability	804	747
Postretirement benefit liability	641	671
Deferred income taxes	133	0
Other financial liabilities	1,468	844
Other	1,367	1,369
Total other liabilities and deferred credits	8,596	7,613
Commitments and contingencies
Stockholders' equity:
Common stock at par, $0.01 par value; authorized 1,000 shares; issued and outstanding 1,000 shares at both June 30, 2023 and December 31, 2022	4	4
Additional capital invested	8,945	8,986
Retained earnings	2,095	1,265
Accumulated other comprehensive income	103	175
Total stockholders' equity	7,705	6,896
Total liabilities and stockholders' equity	73,341	67,358
United Airlines, Inc.
Current assets:
Cash and cash equivalents	9,605	7,166
Short-term investments	9,533	9,248
Restricted cash	38	45
Receivables, less allowance for credit losses (2023 — $15; 2022 — $11)	2,004	1,801
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2023 — $648; 2022 — $610)	1,290	1,109
Prepaid expenses and other	836	689
Total current assets	23,306	20,058
Operating property and equipment:
Flight equipment	45,784	42,775
Other property and equipment	9,822	9,334
Purchase deposits for flight equipment	3,102	2,820
Total operating property and equipment	58,708	54,929
Less — Accumulated depreciation and amortization	(21,580)	(20,481)
Total operating property and equipment, net	37,128	34,448
Operating lease right-of-use assets	3,995	3,889
Other assets:
Goodwill	4,527	4,527
Intangibles, less accumulated amortization (2023 — $1,477; 2022 — $1,472)	2,744	2,762
Restricted cash	238	210
Deferred income taxes	0	62
Investments in affiliates and other, less allowance for credit losses (2023 — $21; 2022 —$21)	1,403	1,373
Total other assets	8,912	8,934
Total assets	73,341	67,329
Current liabilities:
Accounts payable	4,172	3,395
Accrued salaries and benefits	3,223	1,971
Advance ticket sales	10,102	7,555
Frequent flyer deferred revenue	2,841	2,693
Current maturities of long-term debt	3,580	2,911
Current maturities of operating leases	571	561
Current maturities of finance leases	225	104
Current maturities of other financial liabilities	35	23
Other	829	781
Total current liabilities	25,578	19,994
Long-term debt	26,713	28,283
Long-term obligations under operating leases	4,607	4,459
Long-term obligations under finance leases	145	115
Other liabilities and deferred credits:
Frequent flyer deferred revenue	4,183	3,982
Pension liability	804	747
Postretirement benefit liability	641	671
Deferred income taxes	162	0
Other financial liabilities	1,468	844
Other	1,366	1,369
Total other liabilities and deferred credits	8,624	7,613
Commitments and contingencies
Stockholders' equity:
Common stock at par, $0.01 par value; authorized 1,000 shares; issued and outstanding 1,000 shares at both June 30, 2023 and December 31, 2022	0	0
Additional capital invested	435	403
Retained earnings	4,597	3,716
Accumulated other comprehensive income	103	175
Payable to parent	2,539	2,571
Total stockholders' equity	7,674	6,865
Total liabilities and stockholders' equity	$ 73,341	$ 67,329

Consolidated Balance Sheets (_4

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Receivables, allowance for credit losses	$ 15	$ 11
Aircraft fuel, spare, parts and supplies, obsolescence allowance	648	610
Intangibles, accumulated amortization	1,477	1,472
Allowance for credit losses on investments in affiliates and other	$ 21	$ 21
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	1,000,000,000	1,000,000,000
Common shares, outstanding (in shares)	327,979,189	326,930,321
United Airlines, Inc.
Receivables, allowance for credit losses	$ 15	$ 11
Aircraft fuel, spare, parts and supplies, obsolescence allowance	648	610
Intangibles, accumulated amortization	1,477	1,472
Allowance for credit losses on investments in affiliates and other	$ 21	$ 21
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	1,000	1,000
Common shares, issued (in shares)	1,000	1,000
Common shares, outstanding (in shares)	1,000	1,000

Condensed Statements of Conso_3

Condensed Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Cash Flows from Operating Activities:
Net cash provided by operating activities		$ 6,941	$ 4,167
Cash Flows from Investing Activities:
Capital expenditures, net of flight equipment purchase deposit returns		(3,263)	(952)
Purchases of short-term and other investments		(6,876)	(3,302)
Proceeds from sale of short-term and other investments		6,702	215
Proceeds from sale of property and equipment		9	138
Other, net		1	(13)
Net cash used in investing activities		(3,427)	(3,914)
Cash Flows from Financing Activities:
Proceeds from issuance of debt and other financing liabilities, net of discounts and fees		1,591	212
Payments of long-term debt, finance leases and other financing liabilities		(2,614)	(1,795)
Other, net		(31)	(71)
Net cash used in financing activities		(1,054)	(1,654)
Net increase (decrease) in cash, cash equivalents and restricted cash		2,460	(1,401)
Cash, cash equivalents and restricted cash at beginning of the period		7,421	18,533
Cash, cash equivalents and restricted cash at end of the period	[1]	9,881	17,132
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt, finance leases and other		559	0
Right-of-use assets acquired through operating leases		434	84
Lease modifications and lease conversions		349	82
Investment interests received in exchange for goods and services		25	44
United Airlines, Inc.
Cash Flows from Operating Activities:
Net cash provided by operating activities		6,910	4,096
Cash Flows from Investing Activities:
Capital expenditures, net of flight equipment purchase deposit returns		(3,263)	(952)
Purchases of short-term and other investments		(6,876)	(3,302)
Proceeds from sale of short-term and other investments		6,702	215
Proceeds from sale of property and equipment		9	138
Other, net		1	(13)
Net cash used in investing activities		(3,427)	(3,914)
Cash Flows from Financing Activities:
Proceeds from issuance of debt and other financing liabilities, net of discounts and fees		1,591	212
Payments of long-term debt, finance leases and other financing liabilities		(2,614)	(1,795)
Other, net		0	0
Net cash used in financing activities		(1,023)	(1,583)
Net increase (decrease) in cash, cash equivalents and restricted cash		2,460	(1,401)
Cash, cash equivalents and restricted cash at beginning of the period		7,421	18,533
Cash, cash equivalents and restricted cash at end of the period	[2]	9,881	17,132
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt, finance leases and other		559	0
Right-of-use assets acquired through operating leases		434	84
Lease modifications and lease conversions		349	82
Investment interests received in exchange for goods and services		$ 25	$ 44
[1]The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the consolidated balance sheet: Current assets: Cash and cash equivalents $ 9,605 $ 16,885 Restricted cash — Current 38 43 Restricted cash — Non-Current 238 204 Total cash, cash equivalents and restricted cash $ 9,881 $ 17,132 Current assets: Cash and cash equivalents $ 9,605 $ 16,885 Restricted cash — Current 38 43 Restricted cash — Non-Current 238 204 Total cash, cash equivalents and restricted cash $ 9,881 $ 17,132

Condensed Statements of Conso_4

Condensed Statements of Consolidated Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023		Dec. 31, 2022	Jun. 30, 2022
Current assets:
Cash and cash equivalents	$ 9,605		$ 7,166	$ 16,885
Restricted cash — Current	38		45	43
Restricted cash — Non-Current	238		210	204
Total cash, cash equivalents and restricted cash	9,881	[1]	7,421	17,132	[1]
United Airlines, Inc.
Current assets:
Cash and cash equivalents	9,605		7,166	16,885
Restricted cash — Current	38		45	43
Restricted cash — Non-Current	238		210	204
Total cash, cash equivalents and restricted cash	$ 9,881	[2]	$ 7,421	$ 17,132	[2]
[1]The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the consolidated balance sheet: Current assets: Cash and cash equivalents $ 9,605 $ 16,885 Restricted cash — Current 38 43 Restricted cash — Non-Current 238 204 Total cash, cash equivalents and restricted cash $ 9,881 $ 17,132 Current assets: Cash and cash equivalents $ 9,605 $ 16,885 Restricted cash — Current 38 43 Restricted cash — Non-Current 238 204 Total cash, cash equivalents and restricted cash $ 9,881 $ 17,132

Statements of Consolidated St_2

Statements of Consolidated Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Additional Capital Invested	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	United Airlines, Inc.	United Airlines, Inc. Additional Capital Invested	United Airlines, Inc. Retained Earnings	United Airlines, Inc. Accumulated Other Comprehensive Income (Loss)	United Airlines, Inc. Payable to Parent
Balance beginning at Dec. 31, 2021	$ 5,029	$ 9,156	$ 625	$ (942)	$ 4,998	$ 317	$ 2,977	$ (942)	$ 2,646
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,048)		(1,048)		(1,047)		(1,047)
Other comprehensive loss	(2)			(2)	(2)			(2)
Stock-settled share-based compensation	55	55			56	56
Other					(72)				(72)
Balance ending at Jun. 30, 2022	3,964	8,970	(515)	(944)	3,933	373	1,930	(944)	2,574
Balance beginning at Mar. 31, 2022	3,624	8,953	(844)	(937)	3,593	355	1,600	(937)	2,575
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	329		329		330		330
Other comprehensive loss	(7)			(7)	(7)			(7)
Stock-settled share-based compensation	17	17			18	18
Other					(1)				(1)
Balance ending at Jun. 30, 2022	3,964	8,970	(515)	(944)	3,933	373	1,930	(944)	2,574
Balance beginning at Dec. 31, 2022	6,896	8,986	1,265	175	6,865	403	3,716	175	2,571
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	881		881		881		881
Other comprehensive loss	(72)			(72)	(72)			(72)
Stock-settled share-based compensation	32	32			32	32
Other					(32)				(32)
Balance ending at Jun. 30, 2023	7,705	8,945	2,095	103	7,674	435	4,597	103	2,539
Balance beginning at Mar. 31, 2023	6,668	8,926	1,020	161	6,636	414	3,522	161	2,539
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,075		1,075		1,075		1,075
Other comprehensive loss	(58)			(58)	(58)			(58)
Stock-settled share-based compensation	21	21			21	21
Other					0
Balance ending at Jun. 30, 2023	$ 7,705	$ 8,945	$ 2,095	$ 103	$ 7,674	$ 435	$ 4,597	$ 103	$ 2,539

Combined Notes to Condensed Con

Combined Notes to Condensed Consolidated Financial Statements (Unaudited)	6 Months Ended
	Jun. 30, 2023
Unusual or Infrequent Items, or Both [Abstract]
COMBINED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)	COMBINED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) United Airlines Holdings, Inc. (together with its consolidated subsidiaries, "UAL" or the "Company") is a holding company and its wholly-owned subsidiary is United Airlines, Inc. (together with its consolidated subsidiaries, "United"). This Quarterly Report on Form 10-Q is a combined report of UAL and United, including their respective consolidated financial statements. As UAL consolidates United for financial statement purposes, disclosures that relate to activities of United also apply to UAL, unless otherwise noted. United's operating revenues and operating expenses comprise nearly 100% of UAL's revenues and operating expenses. In addition, United comprises approximately the entire balance of UAL's assets, liabilities and operating cash flows. When appropriate, UAL and United are named specifically for their individual contractual obligations and related disclosures, and any significant differences between the operations and results of UAL and United are separately disclosed and explained. We sometimes use the words "we," "our," "us," and the "Company" in this report for disclosures that relate to all of UAL and United. The UAL and United unaudited condensed consolidated financial statements shown here have been prepared as required by the U.S. Securities and Exchange Commission (the "SEC"). Some information and footnote disclosures normally included in financial statements that comply with accounting principles generally accepted in the United States ("GAAP") have been condensed or omitted as permitted by the SEC. The financial statements include all adjustments, including normal recurring adjustments and other adjustments, which are considered necessary for a fair presentation of the Company's financial position and results of operations for interim periods presented. The UAL and United financial statements should be read together with the information included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2022 (the "2022 Form 10-K"). The Company's quarterly financial data is subject to seasonal fluctuations. Historically its second and third quarter financial results have reflected higher travel demand, and were better than its first and fourth quarter financial results.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
REVENUE	REVENUE Revenue by Geography. The table below presents the Company's operating revenue by principal geographic region (as defined by the U.S. Department of Transportation) (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Domestic (U.S. and Canada) $ 8,417 $ 7,819 $ 15,584 $ 12,905 Atlantic (including Europe, Africa, India and Middle East destinations) 3,229 2,481 5,061 3,570 Latin America 1,273 1,195 2,589 2,104 Pacific 1,259 617 2,373 1,099 Total $ 14,178 $ 12,112 $ 25,607 $ 19,678 Advance Ticket Sales. The Company defers amounts related to future travel in its Advance ticket sales liability account. All tickets sold at any given point in time have travel dates through the next 12 months. The Company's Advance ticket sales liability also includes credits issued to customers for future flights ("FFCs") and electronic travel certificates ("ETCs"), primarily for ticket cancellations, which can be applied towards a purchase of a new ticket. FFCs and ETCs are valid up to one year from the date of issuance; however, all credits issued on or before December 31, 2022 have been extended to December 31, 2023. The Company estimates the value of Advance ticket sales that will expire unused ("breakage") and recognizes revenue in proportion to the usage of the related tickets. To determine breakage, the Company uses its historical experience with expired tickets and certificates and other facts, such as recent aging trends, program changes and modifications that could affect the ultimate expiration patterns. Changes in our estimates of FFCs and ETCs that may expire unused could have a material impact on revenue. Changes in estimates of breakage are recognized prospectively in proportion to the remaining usage of the related tickets. In the six months ended June 30, 2023 and 2022, the Company recognized approximately $4.6 billion and $2.6 billion, respectively, of passenger revenue for tickets that were included in Advance ticket sales at the beginning of those periods. Ancillary Fees. The Company charges fees, separately from ticket sales, for certain ancillary services that are directly related to passengers' travel, such as baggage fees, premium seat fees, inflight amenity fees and other ticket-related fees. These ancillary fees are part of the travel performance obligation and, as such, are recognized as passenger revenue when the travel occurs. The Company recorded $1.0 billion and $1.9 billion of ancillary fees within passenger revenue in the three and six months ended June 30, 2023, respectively. The Company recorded $0.9 billion and $1.5 billion of ancillary fees within passenger revenue in the three and six months ended June 30, 2022, respectively. Frequent Flyer Accounting. The table below presents a roll forward of Frequent flyer deferred revenue (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Total Frequent flyer deferred revenue - beginning balance $ 6,860 $ 6,417 $ 6,675 $ 6,282 Total miles awarded 902 666 1,649 1,143 Travel miles redeemed (712) (566) (1,243) (888) Non-travel miles redeemed (26) (22) (57) (42) Total Frequent flyer deferred revenue - ending balance $ 7,024 $ 6,495 $ 7,024 $ 6,495

Earnings (Loss) Per Share

Earnings (Loss) Per Share	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
EARNINGS (LOSS) PER SHARE	EARNINGS (LOSS) PER SHARE The computations of UAL's basic and diluted earnings (loss) per share are set forth below (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Earnings (loss) available to common stockholders $ 1,075 $ 329 $ 881 $ (1,048) Basic weighted-average shares outstanding 328.0 326.7 327.7 325.9 Dilutive effect of employee stock awards 1.2 1.7 1.5 — Dilutive effect of stock warrants (a) 2.3 1.9 2.3 — Diluted weighted-average shares outstanding 331.5 330.3 331.5 325.9 Earnings (loss) per share, basic $ 3.28 $ 1.01 $ 2.69 $ (3.22) Earnings (loss) per share, diluted $ 3.24 $ 1.00 $ 2.66 $ (3.22) Potentially dilutive securities (b) Stock warrants (a) 1.5 1.5 1.5 1.5 Employee stock awards 0.7 0.7 0.7 0.7 (a) Represent warrants issued to the U.S. Treasury Department ("Treasury") pursuant to the payroll support program, including extensions, and the loan program established under the Coronavirus Aid, Relief, and Economic Security Act. The Company issued, to Treasury, warrants to purchase up to approximately 10 million shares of UAL common stock at exercise prices ranging from $31.50 to $53.92 and expiration dates ranging from April 20, 2025 to June 10, 2026. All warrants were outstanding as of June 30, 2023. (b) Weighted-average potentially dilutive securities outstanding excluded from the computation of diluted earnings per share because the securities would have had an antidilutive effect.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The table below presents the components of the Company's accumulated other comprehensive income (loss), net of tax ("AOCI") (in millions): Pension and Other Postretirement Liabilities Investments and Other Deferred Taxes (a) Total Balance at March 31, 2023 $ 582 $ (8) $ (413) $ 161 Changes in value (8) (31) 8 (31) Amounts reclassified to earnings (35) (b) — 8 (27) Balance at June 30, 2023 $ 539 $ (39) $ (397) $ 103 Balance at December 31, 2022 $ 626 $ (35) $ (416) $ 175 Changes in value (17) (4) 4 (17) Amounts reclassified to earnings (70) (b) — 15 (55) Balance at June 30, 2023 $ 539 $ (39) $ (397) $ 103 Balance at March 31, 2022 $ (839) $ — $ (98) $ (937) Changes in value 6 (14) 2 (6) Amounts reclassified to earnings (1) (b) — — (1) Balance at June 30, 2022 $ (834) $ (14) $ (96) $ (944) Balance at December 31, 2021 $ (847) $ — $ (95) $ (942) Changes in value 14 (14) (1) (1) Amounts reclassified to earnings (1) (b) — — (1) Balance at June 30, 2022 $ (834) $ (14) $ (96) $ (944) (a) Includes approximately $285 million of deferred income tax expense that will not be recognized in net income until the related pension and postretirement benefit obligations are fully extinguished. We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to results from operations. (b) This AOCI component is included in the computation of net periodic pension and other postretirement costs, specifically the following components: amortization of unrecognized (gain) loss, amortization of prior service credit and other (see Note 5 of this report for additional information).

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2023
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXESThe Company's effective tax rates for the three and six months ended June 30, 2023 were 22.5% and 22.1%, respectively. The Company's effective tax rates for the three and six months ended June 30, 2022 were 28.3% and 18.9%, respectively. The provision for income taxes for the three and six months ended June 30, 2023 is based on the estimated annual effective tax rate, which represents a blend of federal, state and foreign taxes and includes the impact of certain nondeductible items. The provision for income taxes for the three and six months ended June 30, 2022 was calculated using a discrete effective tax rate method. We determined that applying an estimate of the annual effective tax rate to income or loss for the interim reporting period would not provide a reliable estimate for the three and six months ended June 30, 2022, since small changes in estimated income would have resulted in significant changes in the estimated annual effective tax rate.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2023
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS The Company's net periodic benefit cost includes the following components for the three months ended June 30 (in millions): Pension Benefits Other Postretirement Benefits Affected Line Item 2023 2022 2023 2022 Service cost $ 31 $ 51 $ 1 $ 2 Salaries and related costs Interest cost 55 47 11 8 Miscellaneous, net Expected return on plan assets (63) (76) (1) (1) Miscellaneous, net Amortization of unrecognized (gain) loss 2 31 (10) (4) Miscellaneous, net Amortization of prior service credit — — (28) (28) Miscellaneous, net Other 1 — — — Miscellaneous, net Total $ 26 $ 53 $ (27) $ (23) The Company's net periodic benefit cost includes the following components for the six months ended June 30 (in millions): Pension Benefits Other Postretirement Benefits Affected Line Item 2023 2022 2023 2022 Service cost $ 62 $ 102 $ 2 $ 4 Salaries and related costs Interest cost 110 94 21 15 Miscellaneous, net Expected return on plan assets (126) (154) (1) (1) Miscellaneous, net Amortization of unrecognized (gain) loss 4 61 (19) (7) Miscellaneous, net Amortization of prior service credit — — (56) (56) Miscellaneous, net Other 1 1 — — Miscellaneous, net Total $ 51 $ 104 $ (53) $ (45)

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS	FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS The table below presents disclosures about the financial assets and liabilities measured at fair value on a recurring basis in UAL's financial statements (in millions): June 30, 2023 December 31, 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 9,605 $ 9,605 $ — $ — $ 7,166 $ 7,166 $ — $ — Restricted cash - current 38 38 — — 45 45 — — Restricted cash - non-current 238 238 — — 210 210 — — Short-term investments: U.S. government and agency notes 9,300 — 9,300 — 8,914 — 8,914 — Asset-backed securities 160 — 160 — 325 — 325 — Certificates of deposit placed through an account registry service ("CDARS") 73 — 73 — — — — — Corporate debt — — — — 9 — 9 — Long-term investments: Equity securities 206 206 — — 189 189 — — Investments presented in the table above have the same fair value as their carrying value. Restricted cash - current — Primarily includes amounts to be used for the payment of fees, principal and interest on senior secured notes and a secured term loan facility (the "MileagePlus Financing") secured by substantially all of the assets of Mileage Plus Holdings, LLC, a direct wholly-owned subsidiary of United. Restricted cash - non-current — Primarily includes collateral associated with the MileagePlus Financing, collateral for letters of credit and collateral associated with facility leases and other insurance-related obligations. Short-term investments — The short-term investments shown in the table above are classified as available-for-sale and have remaining maturities of approximately two years or less. Long-term investments: Equity securities — Represents equity and equity-linked securities (such as vested warrants) that make up United's investments in Azul Linhas Aéreas Brasileiras S.A., Archer Aviation Inc., Eve Holding, Inc., Mesa Air Group, Inc. and Clear Secure, Inc. Other fair value information. The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above (in millions). Carrying amounts include any related discounts, premiums and issuance costs: June 30, 2023 December 31, 2022 Carrying Amount Fair Value Carrying Amount Fair Value Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Long-term debt $ 30,293 $ 29,231 $ — $ 23,562 $ 5,669 $ 31,194 $ 29,371 $ — $ 23,990 $ 5,381 Fair value of the financial instruments included in the tables above was determined as follows: Description Fair Value Methodology Cash and cash equivalents and Restricted cash (current and non-current) The carrying amounts of these assets approximate fair value. Short-term and Long-term investments Fair value is based on (a) the trading prices of the investment or similar instruments or (b) broker quotes obtained by third-party valuation services. Long-term debt Fair values were based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities or assets. Equity Method Investments. As of June 30, 2023, United holds the following investments, accounted for using the equity method, with a combined carrying value of approximately $214 million: • CommuteAir LLC. United owns a 40% minority ownership stake in CommuteAir LLC. CommuteAir currently operates 56 regional aircraft under a capacity purchase agreement ("CPA") that has a term through 2026. • Republic Airways Holdings Inc. United holds a 19% minority interest in Republic Airways Holdings Inc., which is the parent company of Republic Airways Inc. ("Republic"). Republic currently operates 66 regional aircraft under CPAs that have terms through 2036. • United Airlines Ventures Sustainable Flight Fund (the "Fund"). During the first quarter of 2023, United launched, through its corporate venture capital arm, United Airlines Ventures ("UAV"), an investment vehicle designed to support start-ups focused on decarbonizing air travel by accelerating the research, production and technologies associated with sustainable aviation fuel ("SAF"). The Fund started with more than $100 million in commitments from United and other corporate investors, collectively, as limited partners. UAV transferred certain of its existing SAF investments to the Fund's portfolio. As of June 30, 2023, the Company indirectly holds a 49.99% ownership interest in the Fund. • Blue Blade Energy, LLC ("Blue Blade"). UAV holds a 20% minority interest in Blue Blade, a joint venture with Tallgrass Energy Partners, LP, and Green Plains Inc. to develop and then commercialize a novel SAF technology that uses ethanol as its feedstock. Other Investments. As of June 30, 2023, United has equity investments in Avianca Group International Limited, a multinational airline holding company, JetSuiteX, Inc., an independent air carrier doing business as JSX as well as a number of companies with emerging technologies and sustainable solutions. None of these investments have readily determinable fair values. We account for these investments at cost less impairment, adjusted for observable price changes in orderly transactions for an identical or similar investment of the same issuer. As of June 30, 2023, the carrying value of these investments was $417 million.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Commitments. As of June 30, 2023, United had firm commitments to purchase aircraft from The Boeing Company ("Boeing") and Airbus S.A.S. ("Airbus") as presented in the table below: Contractual Aircraft Deliveries Expected Aircraft Deliveries (b) Aircraft Type Number of Firm Last Six Months 2024 After 2024 Last Six Months 2024 After 2024 787 100 — 8 92 — 8 92 737 MAX 392 91 91 210 50 74 268 A321neo 70 12 21 37 4 29 37 A321XLR 50 — — 50 — — 50 A350 45 — — 45 — — 45 (a) United also has options and purchase rights for additional aircraft. (b) Expected aircraft deliveries reflect adjustments communicated by Boeing and Airbus or estimated by United. The aircraft listed in the table above are scheduled for delivery through 2033. The amount and timing of the Company's future capital commitments could change to the extent that: (i) the Company and the aircraft manufacturers, with whom the Company has existing orders for new aircraft, agree to modify the contracts governing those orders; (ii) rights are exercised pursuant to the relevant agreements to modify the timing of deliveries; or (iii) the aircraft manufacturers are unable to deliver in accordance with the terms of those orders. During the first half of 2023, United entered into agreements with third parties to finance through sale and leaseback transactions new Boeing model 737 MAX aircraft subject to purchase agreements between United and Boeing. For certain aircraft, United assigned its right to purchase such aircraft to the buyer, and simultaneous with the buyer's purchase from Boeing, United entered into a long-term lease for such aircraft with the buyer as lessor. Upon delivery of the aircraft in these sale and leaseback transactions, the Company accounted for these aircraft as part of Flight equipment on the Company's consolidated balance sheet and the related obligation recorded in Current maturities of other financial liabilities and Other financial liabilities since they did not qualify for sale recognition (failed sale and leaseback). The table below summarizes United's commitments as of June 30, 2023, which include aircraft and related spare engines, aircraft improvements and non-aircraft capital commitments. Aircraft commitments are based on contractual scheduled aircraft deliveries without any adjustments communicated by Boeing and Airbus or estimated by United. (in billions) Last six months of 2023 $ 6.8 2024 6.9 2025 8.2 2026 6.2 2027 4.6 After 2027 16.6 $ 49.3 Regional CPAs . In the first quarter of 2023, United amended its CPA agreements with one of its regional carriers to increase the contractually agreed fees (carrier costs) paid to that carrier. The Company terminated its CPA and related regional flight operations with Air Wisconsin in June 2023. Our future commitments under our CPAs are dependent on numerous variables, and are, therefore, difficult to predict. The most important of these variables is the number of scheduled block hours. Although we are not required to purchase a minimum number of block hours under certain of our CPAs, we have set forth below estimates of our future payments under the CPAs based on our assumptions. The actual amounts we pay to our regional operators under CPAs could differ materially from these estimates. United's estimates of its future payments under all of the CPAs do not include the portion of the underlying obligation for any aircraft leased to a regional carrier or deemed to be leased from other regional carriers and facility rent. For purposes of calculating these estimates, we have assumed (1) the number of block hours flown is based on our anticipated level of flight activity or at any contractual minimum utilization levels if applicable, whichever is higher, (2) that we will reduce the fleet as rapidly as contractually allowed under each CPA, (3) that aircraft utilization, stage length and load factors will remain constant, (4) that each carrier's operational performance will remain at recent historic levels and (5) an annual projected inflation rate. Based on these assumptions as of June 30, 2023 , our estimated future payments through the end of the terms of our CPAs are presented in the table below : (in billions) Last six months of 2023 $ 1.1 2024 2.3 2025 1.9 2026 1.8 2027 1.3 After 2027 4.0 $ 12.4 Guarantees. As of June 30, 2023, United is the guarantor of approximately $2.0 billion in aggregate principal amount of tax-exempt special facilities revenue bonds and interest thereon. These bonds, issued by various airport municipalities, are payable solely from rentals paid under long-term agreements with the respective governing bodies. The leasing arrangements associated with these obligations are accounted for as operating leases recognized on the Company's consolidated balance sheet with the associated expense recorded on a straight-line basis over the expected lease term. All of these bonds are due between 2023 and 2041. As of June 30, 2023, United is the guarantor of $84 million of aircraft mortgage debt issued by one of United's regional carriers. The aircraft mortgage debt is subject to similar increased cost provisions as described below for the Company's debt, and the Company would potentially be responsible for those costs under the guarantees. Increased Cost Provisions. In United's financing transactions that include loans in which United is the borrower, United typically agrees to reimburse lenders for any reduced returns with respect to the loans due to any change in capital requirements and, in the case of loans with respect to which the interest rate is based on the London Interbank Offered Rate (LIBOR) or the Secured Overnight Financing Rate (SOFR), for certain other increased costs that the lenders incur in carrying these loans as a result of any change in law, subject, in most cases, to obligations of the lenders to take certain limited steps to mitigate the requirement for, or the amount of, such increased costs. At June 30, 2023, the Company had $11.6 billion of floating rate debt with remaining terms of up to approximately 12 years that are subject to these increased cost provisions. In several financing transactions involving loans or leases from non-U.S. entities, with remaining terms of up to approximately 12 years and an aggregate balance of $8.5 billion, the Company bears the risk of any change in tax laws that would subject loan or lease payments thereunder to non-U.S. entities to withholding taxes, subject to customary exclusions. Labor . As of June 30, 2023, the Company had approximately 99,800 employees, of whom approximately 83% were represented by various U.S. labor organizations. In January 2023, United and the International Brotherhood of Teamsters ratified an extension to its labor contract covering the Company's more than 8,000 technicians and related employees. The agreement becomes amendable in December 2024 and includes a one-year early opener that allows for bargaining on a successor agreement to begin in December 2023. On May 1, 2023, the Company and the International Association of Machinists & Aerospace Workers ("IAM") ratified five contracts covering nearly 30,000 IAM-represented fleet service, passenger service, storekeepers, maintenance instructors and fleet technical instructors and related employees. The Company recorded a one-time $48 million expense in conjunction with the ratification. Negotiations will continue for agreements to cover security guards in California and central load planners. The ratified agreements are effective through 2025. In July 2023, the Company reached an Agreement in Principle ("AIP") with its employees represented by the Air Line Pilots Association ("ALPA") regarding a contract that became amendable in January 2019. The AIP includes numerous work rule changes and pay rate increases during the four-year term. The agreement also includes a provision for a one-time payment upon ratification. In the three and six months ended June 30, 2023, the Company recorded $765 million of expenses associated with this AIP relating to wages for 2022 and prior years.

Debt

Debt	6 Months Ended
	Jun. 30, 2023
Debt Disclosure [Abstract]
DEBT	DEBT As of June 30, 2023, we had $1.75 billion undrawn and available under our revolving credit facility. Our debt agreements contain customary terms and conditions as well as various affirmative, negative and financial covenants that, among other things, restrict the ability of the Company and its subsidiaries to incur additional indebtedness and pay dividends or repurchase stock. As of June 30, 2023, UAL and United were in compliance with their respective debt covenants. Equipment Notes . On June 20, 2023, the Company and Wilmington Trust, National Association, as subordination agent and pass through trustee (the "Trustee") under a certain pass through trust newly formed by the Company, entered into the Note Purchase Agreement, dated as of June 20, 2023 (the "Note Purchase Agreement"). The Note Purchase Agreement provides for the issuance by the Company of equipment notes (the "Equipment Notes") in the aggregate principal amount of $1.3 billion to finance 39 Boeing aircraft delivered new to the Company from August 2022 to May 2023. Pursuant to the Note Purchase Agreement, the Trustee purchased Equipment Notes issued under a trust indenture and mortgage (each, an "Indenture" and, collectively, the "Indentures") with respect to each aircraft entered into by the Company and Wilmington Trust, National Association, as mortgagee. Each Indenture provides for the issuance of Equipment Notes in a single series, Series A, bearing interest at the rate of 5.80% per annum. The Equipment Notes were purchased by the Trustee, using the proceeds from the sale of Pass Through Certificates, Series 2023-1A (the "Certificates"), issued by a pass through trust newly-formed by the Company to facilitate the financing of the aircraft. The interest on the Equipment Notes is payable semi-annually on each January 15 and July 15, beginning on January 15, 2024. The principal payments on the Equipment Notes are scheduled on January 15 and July 15 of each year, beginning on July 15, 2024. The final payments on the Equipment Notes will be due on January 15, 2036. In the second quarter of 2023, United prepaid $1.0 billion of a 2021 term loan facility. See Note 9 for information related to charges recorded as a result of this prepayment. The table below presents the Company's contractual principal payments (not including $329 million of unamortized debt discount, premiums and debt issuance costs) at June 30, 2023 under then-outstanding long-term debt agreements (in millions): Last six months of 2023 $ 1,451 2024 3,965 2025 3,450 2026 5,244 2027 2,468 After 2027 14,044 $ 30,622

Special Charges

Special Charges	6 Months Ended
	Jun. 30, 2023
Other Income and Expenses [Abstract]
SPECIAL CHARGES	SPECIAL CHARGES For the three and six months ended June 30, operating and nonoperating special charges and unrealized (gains) losses on investments in the statements of consolidated operations consisted of the following (in millions): Three Months Ended Six Months Ended 2023 2022 2023 2022 Labor contract ratification bonuses $ 813 $ — $ 813 $ — (Gains) losses on sale of assets and other special charges 46 112 60 104 Total operating special charges 859 112 873 104 Nonoperating unrealized (gains) losses on investments, net (84) 40 (108) 40 Nonoperating debt extinguishment and modification fees 11 — 11 7 Total nonoperating special charges and unrealized (gains) losses on investments, net (73) 40 (97) 47 Total operating and nonoperating special charges and unrealized (gains) losses on investments, net 786 152 776 151 Income tax benefit, net of valuation allowance (194) (10) (197) (10) Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes $ 592 $ 142 $ 579 $ 141 2023 Labor contract ratification bonuses. During the three and six months ended June 30, 2023, the Company recorded $813 million of expense associated with the recently completed AIP with ALPA and ratified contracts with IAM. See Note 7 for additional information. (Gains) losses on sale of assets and other special charges. During the three and six months ended June 30, 2023, the Company recorded $46 million and $60 million, respectively, of net charges primarily comprised of reserves for various legal matters, accelerated depreciation related to certain of the Company's assets that will be retired early and other gains and losses on the sale of assets. Nonoperating unrealized (gains) losses on investments, net. During the three and six months ended June 30, 2023, the Company recorded gains of $84 million and $108 million, respectively, primarily for the change in the market value of its investments in equity securities. Nonoperating debt extinguishment and modification fees . During the three and six months ended June 30, 2023, the Company recorded $11 million of charges primarily related to the prepayment of $1.0 billion of the outstanding principal amount under a 2021 term loan facility. 2022 (Gains) losses on sale of assets and other special charges. During the three and six months ended June 30, 2022, the Company recorded $112 million and $104 million, respectively, of net charges primarily comprised of $94 million for various legal matters. Nonoperating unrealized (gains) losses on investments, net. During the three and six months ended June 30, 2022, the Company recorded losses of $40 million, primarily related to the change in the market value of its investments in equity securities. Nonoperating debt extinguishment and modification fees . During the six months ended June 30, 2022, the Company recorded $7 million of charges primarily related to the early redemption of $400 million of the outstanding principal amount of its 4.25% senior notes due 2022.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Schedule of Operating Revenue by Geographic Region	The table below presents the Company's operating revenue by principal geographic region (as defined by the U.S. Department of Transportation) (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Domestic (U.S. and Canada) $ 8,417 $ 7,819 $ 15,584 $ 12,905 Atlantic (including Europe, Africa, India and Middle East destinations) 3,229 2,481 5,061 3,570 Latin America 1,273 1,195 2,589 2,104 Pacific 1,259 617 2,373 1,099 Total $ 14,178 $ 12,112 $ 25,607 $ 19,678
Schedule of Roll Forward of Frequent Flyer Deferred Revenue	The table below presents a roll forward of Frequent flyer deferred revenue (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Total Frequent flyer deferred revenue - beginning balance $ 6,860 $ 6,417 $ 6,675 $ 6,282 Total miles awarded 902 666 1,649 1,143 Travel miles redeemed (712) (566) (1,243) (888) Non-travel miles redeemed (26) (22) (57) (42) Total Frequent flyer deferred revenue - ending balance $ 7,024 $ 6,495 $ 7,024 $ 6,495

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings (Loss) Per Share	The computations of UAL's basic and diluted earnings (loss) per share are set forth below (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Earnings (loss) available to common stockholders $ 1,075 $ 329 $ 881 $ (1,048) Basic weighted-average shares outstanding 328.0 326.7 327.7 325.9 Dilutive effect of employee stock awards 1.2 1.7 1.5 — Dilutive effect of stock warrants (a) 2.3 1.9 2.3 — Diluted weighted-average shares outstanding 331.5 330.3 331.5 325.9 Earnings (loss) per share, basic $ 3.28 $ 1.01 $ 2.69 $ (3.22) Earnings (loss) per share, diluted $ 3.24 $ 1.00 $ 2.66 $ (3.22) Potentially dilutive securities (b) Stock warrants (a) 1.5 1.5 1.5 1.5 Employee stock awards 0.7 0.7 0.7 0.7 (a) Represent warrants issued to the U.S. Treasury Department ("Treasury") pursuant to the payroll support program, including extensions, and the loan program established under the Coronavirus Aid, Relief, and Economic Security Act. The Company issued, to Treasury, warrants to purchase up to approximately 10 million shares of UAL common stock at exercise prices ranging from $31.50 to $53.92 and expiration dates ranging from April 20, 2025 to June 10, 2026. All warrants were outstanding as of June 30, 2023. (b) Weighted-average potentially dilutive securities outstanding excluded from the computation of diluted earnings per share because the securities would have had an antidilutive effect.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Schedule of Components of Accumulated Other Comprehensive Income, Net of Tax	The table below presents the components of the Company's accumulated other comprehensive income (loss), net of tax ("AOCI") (in millions): Pension and Other Postretirement Liabilities Investments and Other Deferred Taxes (a) Total Balance at March 31, 2023 $ 582 $ (8) $ (413) $ 161 Changes in value (8) (31) 8 (31) Amounts reclassified to earnings (35) (b) — 8 (27) Balance at June 30, 2023 $ 539 $ (39) $ (397) $ 103 Balance at December 31, 2022 $ 626 $ (35) $ (416) $ 175 Changes in value (17) (4) 4 (17) Amounts reclassified to earnings (70) (b) — 15 (55) Balance at June 30, 2023 $ 539 $ (39) $ (397) $ 103 Balance at March 31, 2022 $ (839) $ — $ (98) $ (937) Changes in value 6 (14) 2 (6) Amounts reclassified to earnings (1) (b) — — (1) Balance at June 30, 2022 $ (834) $ (14) $ (96) $ (944) Balance at December 31, 2021 $ (847) $ — $ (95) $ (942) Changes in value 14 (14) (1) (1) Amounts reclassified to earnings (1) (b) — — (1) Balance at June 30, 2022 $ (834) $ (14) $ (96) $ (944) (a) Includes approximately $285 million of deferred income tax expense that will not be recognized in net income until the related pension and postretirement benefit obligations are fully extinguished. We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to results from operations. (b) This AOCI component is included in the computation of net periodic pension and other postretirement costs, specifically the following components: amortization of unrecognized (gain) loss, amortization of prior service credit and other (see Note 5 of this report for additional information).

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2023
Retirement Benefits [Abstract]
Schedule of Components of Net Periodic Benefit Cost	The Company's net periodic benefit cost includes the following components for the three months ended June 30 (in millions): Pension Benefits Other Postretirement Benefits Affected Line Item 2023 2022 2023 2022 Service cost $ 31 $ 51 $ 1 $ 2 Salaries and related costs Interest cost 55 47 11 8 Miscellaneous, net Expected return on plan assets (63) (76) (1) (1) Miscellaneous, net Amortization of unrecognized (gain) loss 2 31 (10) (4) Miscellaneous, net Amortization of prior service credit — — (28) (28) Miscellaneous, net Other 1 — — — Miscellaneous, net Total $ 26 $ 53 $ (27) $ (23) The Company's net periodic benefit cost includes the following components for the six months ended June 30 (in millions): Pension Benefits Other Postretirement Benefits Affected Line Item 2023 2022 2023 2022 Service cost $ 62 $ 102 $ 2 $ 4 Salaries and related costs Interest cost 110 94 21 15 Miscellaneous, net Expected return on plan assets (126) (154) (1) (1) Miscellaneous, net Amortization of unrecognized (gain) loss 4 61 (19) (7) Miscellaneous, net Amortization of prior service credit — — (56) (56) Miscellaneous, net Other 1 1 — — Miscellaneous, net Total $ 51 $ 104 $ (53) $ (45)

Financial Instruments and Fai_2

Financial Instruments and Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The table below presents disclosures about the financial assets and liabilities measured at fair value on a recurring basis in UAL's financial statements (in millions): June 30, 2023 December 31, 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 9,605 $ 9,605 $ — $ — $ 7,166 $ 7,166 $ — $ — Restricted cash - current 38 38 — — 45 45 — — Restricted cash - non-current 238 238 — — 210 210 — — Short-term investments: U.S. government and agency notes 9,300 — 9,300 — 8,914 — 8,914 — Asset-backed securities 160 — 160 — 325 — 325 — Certificates of deposit placed through an account registry service ("CDARS") 73 — 73 — — — — — Corporate debt — — — — 9 — 9 — Long-term investments: Equity securities 206 206 — — 189 189 — —
Schedule of Carrying Values and Estimated Fair Values of Financial Instruments	The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above (in millions). Carrying amounts include any related discounts, premiums and issuance costs: June 30, 2023 December 31, 2022 Carrying Amount Fair Value Carrying Amount Fair Value Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Long-term debt $ 30,293 $ 29,231 $ — $ 23,562 $ 5,669 $ 31,194 $ 29,371 $ — $ 23,990 $ 5,381
Schedule of Fair Value Measurement Inputs and Valuation Techniques	Fair value of the financial instruments included in the tables above was determined as follows: Description Fair Value Methodology Cash and cash equivalents and Restricted cash (current and non-current) The carrying amounts of these assets approximate fair value. Short-term and Long-term investments Fair value is based on (a) the trading prices of the investment or similar instruments or (b) broker quotes obtained by third-party valuation services. Long-term debt Fair values were based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities or assets.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Firm Commitments and Options to Purchase Aircraft and Summary of Commitments	As of June 30, 2023, United had firm commitments to purchase aircraft from The Boeing Company ("Boeing") and Airbus S.A.S. ("Airbus") as presented in the table below: Contractual Aircraft Deliveries Expected Aircraft Deliveries (b) Aircraft Type Number of Firm Last Six Months 2024 After 2024 Last Six Months 2024 After 2024 787 100 — 8 92 — 8 92 737 MAX 392 91 91 210 50 74 268 A321neo 70 12 21 37 4 29 37 A321XLR 50 — — 50 — — 50 A350 45 — — 45 — — 45 (a) United also has options and purchase rights for additional aircraft. (b) Expected aircraft deliveries reflect adjustments communicated by Boeing and Airbus or estimated by United.
Summary of Commitments	The table below summarizes United's commitments as of June 30, 2023, which include aircraft and related spare engines, aircraft improvements and non-aircraft capital commitments. Aircraft commitments are based on contractual scheduled aircraft deliveries without any adjustments communicated by Boeing and Airbus or estimated by United. (in billions) Last six months of 2023 $ 6.8 2024 6.9 2025 8.2 2026 6.2 2027 4.6 After 2027 16.6 $ 49.3
Summary Of Estimated Future payments Of Contractual Obligation	Based on these assumptions as of June 30, 2023 , our estimated future payments through the end of the terms of our CPAs are presented in the table below : (in billions) Last six months of 2023 $ 1.1 2024 2.3 2025 1.9 2026 1.8 2027 1.3 After 2027 4.0 $ 12.4

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2023
Debt Disclosure [Abstract]
Schedule of Contractual Principal Payments under Long-Term Debt Agreements	The table below presents the Company's contractual principal payments (not including $329 million of unamortized debt discount, premiums and debt issuance costs) at June 30, 2023 under then-outstanding long-term debt agreements (in millions): Last six months of 2023 $ 1,451 2024 3,965 2025 3,450 2026 5,244 2027 2,468 After 2027 14,044 $ 30,622

Special Charges (Tables)

Special Charges (Tables)	6 Months Ended
	Jun. 30, 2023
Other Income and Expenses [Abstract]
Schedule of Components of Special Charges	For the three and six months ended June 30, operating and nonoperating special charges and unrealized (gains) losses on investments in the statements of consolidated operations consisted of the following (in millions): Three Months Ended Six Months Ended 2023 2022 2023 2022 Labor contract ratification bonuses $ 813 $ — $ 813 $ — (Gains) losses on sale of assets and other special charges 46 112 60 104 Total operating special charges 859 112 873 104 Nonoperating unrealized (gains) losses on investments, net (84) 40 (108) 40 Nonoperating debt extinguishment and modification fees 11 — 11 7 Total nonoperating special charges and unrealized (gains) losses on investments, net (73) 40 (97) 47 Total operating and nonoperating special charges and unrealized (gains) losses on investments, net 786 152 776 151 Income tax benefit, net of valuation allowance (194) (10) (197) (10) Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes $ 592 $ 142 $ 579 $ 141

Revenue - Operating Revenue by

Revenue - Operating Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 14,178	$ 12,112	$ 25,607	$ 19,678
Domestic (U.S. and Canada)
Disaggregation of Revenue [Line Items]
Total operating revenue	8,417	7,819	15,584	12,905
Atlantic (including Europe, Africa, India and Middle East destinations)
Disaggregation of Revenue [Line Items]
Total operating revenue	3,229	2,481	5,061	3,570
Latin America
Disaggregation of Revenue [Line Items]
Total operating revenue	1,273	1,195	2,589	2,104
Pacific
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 1,259	$ 617	$ 2,373	$ 1,099

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue From Contract With Customer [Line Items]
Total operating revenue	$ 14,178	$ 12,112	$ 25,607	$ 19,678
Advance Ticket Sales
Revenue From Contract With Customer [Line Items]
Revenue recognized			4,600	2,600
Ancillary Fees
Revenue From Contract With Customer [Line Items]
Total operating revenue	1,000	900	1,900	1,500
Other Operating Revenue
Revenue From Contract With Customer [Line Items]
Total operating revenue	814	709	1,571	1,300
Other Operating Revenue | Chase and Other Partner Agreements
Revenue From Contract With Customer [Line Items]
Total operating revenue	$ 700	$ 600	$ 1,300	$ 1,100

Revenue - Roll Forward of Frequ

Revenue - Roll Forward of Frequent Flyer Deferred Revenue (Details) - Frequent Flyer - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Frequent Flyer Deferred Revenue [Roll Forward]
Total Frequent flyer deferred revenue - beginning balance	$ 6,860	$ 6,417	$ 6,675	$ 6,282
Total miles awarded	902	666	1,649	1,143
Travel miles redeemed	(712)	(566)	(1,243)	(888)
Non-travel miles redeemed	(26)	(22)	(57)	(42)
Total Frequent flyer deferred revenue - ending balance	$ 7,024	$ 6,495	$ 7,024	$ 6,495

Earnings (Loss) Per Share - Com

Earnings (Loss) Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Earnings (loss) available to common stockholders	$ 1,075	$ 329		$ (1,048)
Basic weighted-average shares outstanding(in shares)	328	326.7	327.7	325.9
Dilutive effect of employee stock awards (in shares)	1.2	1.7	1.5	0
Dilutive effect of stock warrants (in shares)	2.3	1.9	2.3	0
Diluted weighted-average shares outstanding (in shares)	331.5	330.3	331.5	325.9
Earnings (loss) per share, basic (in dollars per share)	$ 3.28	$ 1.01	$ 2.69	$ (3.22)
Earnings (loss) per share, diluted (in dollars per share)	$ 3.24	$ 1	$ 2.66	$ (3.22)
CARES Act Loan Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrants to purchase securities (in shares)	10		10
CARES Act Loan Warrants | Minimum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrant exercise price (in dollars per share)	$ 31.50		$ 31.50
CARES Act Loan Warrants | Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrant exercise price (in dollars per share)	$ 53.92		$ 53.92
Stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1.5	1.5	1.5	1.5
Employee stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0.7	0.7	0.7	0.7

Earnings (Loss) Per Share - Nar

Earnings (Loss) Per Share - Narrative (Details) - 2021 ATM Offering - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Mar. 03, 2021
Class of Stock [Line Items]
Number of shares issuable (in shares)				37,000,000
Number of shares issued (in shares)	0	0	4,000,000
Sale price (in dollars per share)			$ 57.50
Proceeds from the issuance of common stock			$ 250

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Deferred Taxes
Balance beginning	$ (413)	$ (98)	$ (416)	$ (95)
Changes in value	8	2	4	(1)
Amounts reclassified to earnings	8	0	15	0
Balance ending	(397)	(96)	(397)	(96)
Total
Balance beginning	6,668	3,624	6,896	5,029
Changes in value	(31)	(6)	(17)	(1)
Amounts reclassified to earnings	(27)	(1)	(55)	(1)
Balance ending	7,705	3,964	7,705	3,964
Accumulated Other Comprehensive Income (Loss)
Total
Balance beginning	161	(937)	175	(942)
Balance ending	103	(944)	103	(944)
Deferred income tax expense			285	285
Pension and Other Postretirement Liabilities
Before Tax
Balance beginning	582	(839)	626	(847)
Changes in value	(8)	6	(17)	14
Amounts reclassified to earnings	(35)	(1)	(70)	(1)
Balance ending	539	(834)	539	(834)
Investments and Other
Before Tax
Balance beginning	(8)	0	(35)	0
Changes in value	(31)	(14)	(4)	(14)
Amounts reclassified to earnings	0	0	0	0
Balance ending	$ (39)	$ (14)	$ (39)	$ (14)

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Effective income tax rate	22.50%	28.30%	22.10%	18.90%

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 31	$ 51	$ 62	$ 102
Interest cost	55	47	110	94
Expected return on plan assets	(63)	(76)	(126)	(154)
Amortization of unrecognized (gain) loss	2	31	4	61
Amortization of prior service credit	0	0	0	0
Other	1	0	1	1
Total	26	53	51	104
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	2	2	4
Interest cost	11	8	21	15
Expected return on plan assets	(1)	(1)	(1)	(1)
Amortization of unrecognized (gain) loss	(10)	(4)	(19)	(7)
Amortization of prior service credit	(28)	(28)	(56)	(56)
Other	0	0	0	0
Total	$ (27)	$ (23)	$ (53)	$ (45)

Financial Instruments and Fai_3

Financial Instruments and Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Measured on a Recurring Basis - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 9,605	$ 7,166
Restricted cash - current	38	45
Restricted cash - non-current	238	210
Equity securities	206	189
U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	9,300	8,914
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	160	325
Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	73	0
Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	9
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	9,605	7,166
Restricted cash - current	38	45
Restricted cash - non-current	238	210
Equity securities	206	189
Level 1 | U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 1 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 1 | Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 1 | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Restricted cash - current	0	0
Restricted cash - non-current	0	0
Equity securities	0	0
Level 2 | U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	9,300	8,914
Level 2 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	160	325
Level 2 | Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	73	0
Level 2 | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	9
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Restricted cash - current	0	0
Restricted cash - non-current	0	0
Equity securities	0	0
Level 3 | U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 3 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 3 | Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	0	0
Level 3 | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments:	$ 0	$ 0

Financial Instruments and Fai_4

Financial Instruments and Fair Value Measurements - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($) aircraft	Mar. 31, 2023 USD ($)
Fair Value [Line Items]
Equity method investments	$ 214
CommuteAir LLC
Fair Value [Line Items]
Ownership stake	40%
Number of aircraft operated | aircraft	56
Republic Airways Holdings Inc.
Fair Value [Line Items]
Ownership stake	19%
Number of aircraft operated | aircraft	66
United Airlines Ventures Sustainable Flight Fund
Fair Value [Line Items]
Ownership stake	49.99%
Initial commitment		$ 100
Blue Blade Energy, LLC
Fair Value [Line Items]
Ownership stake	20%
Fulcrum BioEnergy, Inc., Boom, Alder Fuels LLC, Heart Aerospace Incorporated and ZeroAvia, Inc.
Fair Value [Line Items]
Investment carrying value	$ 417
Corporate Debt | Maximum
Fair Value [Line Items]
Available-for-sale securities remaining maturities	2 years

Financial Instruments and Fai_5

Financial Instruments and Fair Value Measurements - Carrying Values and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying amount	$ 30,293	$ 31,194
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	29,231	29,371
Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	23,562	23,990
Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 5,669	$ 5,381

Commitments and Contingencies -

Commitments and Contingencies - Firm Commitments and Options to Purchase Aircraft (Details)	Jun. 30, 2023 aircraft_commitment aircraft
787
Long-term Purchase Commitment [Line Items]
Number of Firm Commitments | aircraft_commitment	100
Number Of Aircrafts Expected To Take Delivery [Abstract]
Last Six Months of 2023	0
2024	8
After 2024	92
Last Six Months of 2023	0
2024	8
After 2024	92
737 MAX
Long-term Purchase Commitment [Line Items]
Number of Firm Commitments | aircraft_commitment	392
Number Of Aircrafts Expected To Take Delivery [Abstract]
Last Six Months of 2023	91
2024	91
After 2024	210
Last Six Months of 2023	50
2024	74
After 2024	268
A321neo
Long-term Purchase Commitment [Line Items]
Number of Firm Commitments | aircraft_commitment	70
Number Of Aircrafts Expected To Take Delivery [Abstract]
Last Six Months of 2023	12
2024	21
After 2024	37
Last Six Months of 2023	4
2024	29
After 2024	37
A321XLR
Long-term Purchase Commitment [Line Items]
Number of Firm Commitments | aircraft_commitment	50
Number Of Aircrafts Expected To Take Delivery [Abstract]
Last Six Months of 2023	0
2024	0
After 2024	50
Last Six Months of 2023	0
2024	0
After 2024	50
A350
Long-term Purchase Commitment [Line Items]
Number of Firm Commitments | aircraft_commitment	45
Number Of Aircrafts Expected To Take Delivery [Abstract]
Last Six Months of 2023	0
2024	0
After 2024	45
Last Six Months of 2023	0
2024	0
After 2024	45

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Commitments (Details) $ in Billions	Jun. 30, 2023 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Last six months of 2023	$ 1.1
2024	2.3
2025	1.9
2026	1.8
2027	1.3
After 2027	4
Total commitments	12.4
Capital Commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Last six months of 2023	6.8
2024	6.9
2025	8.2
2026	6.2
2027	4.6
After 2027	16.6
Total commitments	$ 49.3

Commitment and Contingencies -

Commitment and Contingencies - Summary of Estimated Future Payments of Contractual Obligations (Details) $ in Billions	Jun. 30, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Last six months of 2023	$ 1.1
2024	2.3
2025	1.9
2026	1.8
2027	1.3
After 2027	4
Total commitments	$ 12.4

Commitments and Contingencies_3

Commitments and Contingencies - Narrative (Details) technician in Thousands, $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
	May 01, 2023 USD ($) Contract employee	Jun. 30, 2023 USD ($) employee technician	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) employee technician	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Commitments and Contingencies [Line Items]
Labor contract ratification bonuses		$ 813	$ 0	$ 813	$ 0
International Association Of Machinists National Pension Plan
Commitments and Contingencies [Line Items]
Number of employees | employee	30,000
Number of contracts ratified | Contract	5
Payment for ratification of contracts and taxes	$ 48
Air Line Pilots Association
Commitments and Contingencies [Line Items]
Labor contract ratification bonuses						$ 765
United Airlines, Inc.
Commitments and Contingencies [Line Items]
Number of employees | employee		99,800		99,800
Percentage of employees represented by various U.S. labor organizations				83%
Number of technicians | technician		8		8
Bargaining on successor agreement, term				1 year
Tax-Exempt Special Facilities Revenue Bonds
Commitments and Contingencies [Line Items]
Aggregate principal amount of guarantee		$ 2,000		$ 2,000
Aircraft Mortgage Debt
Commitments and Contingencies [Line Items]
Aggregate principal amount of guarantee		84		84
Floating Rate Debt
Commitments and Contingencies [Line Items]
Long-term debt		11,600		$ 11,600
Remaining term of debt				12 years
Loans and Leases from Non-U.S. Entities
Commitments and Contingencies [Line Items]
Remaining term of debt				12 years
Aggregate balance		$ 8,500		$ 8,500

Debt - Narrative (Details)

Debt - Narrative (Details) $ in Millions	3 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 20, 2023 USD ($) aircraft
Debt Instrument [Line Items]
Unamortized debt discount	$ 329
Secured Debt | Aircraft Purchase Financing Loans
Debt Instrument [Line Items]
Face amount		$ 1,300
Number of aircrafts delivered | aircraft		39
Stated interest rate		5.80%
Secured Debt | Term Loan Due 2021
Debt Instrument [Line Items]
Repayments of debt	1,000
Revolving Credit Facility | United Airlines, Inc. | Secured Debt
Debt Instrument [Line Items]
Available under revolving credit facility	$ 1,750

Debt - Contractual Principal Pa

Debt - Contractual Principal Payments (Details) - UAL And United $ in Millions	Jun. 30, 2023 USD ($)
Debt Instrument [Line Items]
Last six months of 2023	$ 1,451
2024	3,965
2025	3,450
2026	5,244
2027	2,468
After 2027	14,044
Total long-term debt	$ 30,622

Special Charges - Components of

Special Charges - Components of Special Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Other Income and Expenses [Abstract]
Labor contract ratification bonuses	$ 813	$ 0	$ 813	$ 0
(Gains) losses on sale of assets and other special charges	46	112	60	104
Total operating special charges	859	112	873	104
Nonoperating unrealized (gains) losses on investments, net	(84)	40	(108)	40
Nonoperating debt extinguishment and modification fees	11	0	11	7
Total nonoperating special charges and unrealized (gains) losses on investments, net	(73)	40	(97)	47
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net	786	152	776	151
Income tax benefit, net of valuation allowance	(194)	(10)	(197)	(10)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes	$ 592	$ 142	$ 579	$ 141

Special Charges - Narrative (De

Special Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Restructuring Cost and Reserve [Line Items]
Labor contract ratification bonuses	$ 813	$ 0	$ 813	$ 0
(Gains) losses on sale of assets and other special charges	(46)	(112)	(60)	(104)
Nonoperating unrealized gains (losses)	84	(40)	108	(40)
Deferred debt issuance cost, writeoff	11		11	7
Loss contingency, loss in period				94
Unsecured Debt
Restructuring Cost and Reserve [Line Items]
Repayments of debt	$ 1,000		$ 1,000
Long-term debt		$ 400		$ 400
Stated interest rate		4.25%		4.25%