JetBlue Airways (JBLU) 10-Q 26 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2019shares
Cover page.
Entity Central Index Key	0001158463
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	000-49728
Entity Registrant Name	JETBLUE AIRWAYS CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-0617894
Entity Address, Address Line One	27-01 Queens Plaza North
Entity Address, City or Town	Long Island City
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11101
City Area Code	718
Local Phone Number	286-7900
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	JBLU
Security Exchange Name	NASDAQ
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	296,266,931

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 461	$ 474
Investment securities	448	413
Receivables, less allowance (2019-$2; 2018-$1)	282	211
Inventory, Net	85	78
Prepaid expenses and other	193	212
Total current assets	1,469	1,388
PROPERTY AND EQUIPMENT
Flight equipment	9,814	9,525
Predelivery deposits for flight equipment	408	293
Flight Equipment, gross plus deposits	10,222	9,818
Less accumulated depreciation	2,609	2,448
Flight Equipment, Net	7,613	7,370
Other property and equipment	1,102	1,074
Less accumulated depreciation	494	461
Property plant and equipment other net	608	613
Total property and equipment	8,221	7,983
Operating Lease, Right-of-Use Asset	998	1,056
OTHER ASSETS
Investment securities	4	3
Restricted cash	61	59
Other	483	470
Total other assets	548	532
TOTAL ASSETS	11,236	10,959
CURRENT LIABILITIES
Accounts payable	504	437
Air traffic liability	1,290	1,035
Accrued salaries, wages and benefits	335	313
Other accrued liabilities	352	298
Operating Lease, Liability, Current	133	133
Current maturities of long-term debt and finance leases	275	309
Total current liabilities	2,889	2,525
LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS	1,217	1,361
Operating Lease, Liability, Noncurrent	753	798
DEFERRED TAXES AND OTHER LIABILITIES
Deferred income taxes	1,158	1,112
Frequent Flier Liability, Noncurrent	470	447
Other	52	31
Total deferred taxes and other liabilities	1,680	1,590
STOCKHOLDERS’ EQUITY
Preferred stock, $0.01 par value; 25 shares authorized, none issued	0	0
Common stock, $0.01 par value; 900 shares authorized, 425 and 422 shares issued and 296 and 306 shares outstanding at June 30, 2019 and December 31, 2018, respectively	4	4
Treasury stock, at cost; 129 and 116 shares at June 30, 2019 and December 31, 2018, respectively	(1,503)	(1,272)
Additional paid-in capital	2,221	2,203
Retained earnings	3,974	3,753
Accumulated other comprehensive income (loss)	1	(3)
Total stockholders’ equity	4,697	4,685
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 11,236	$ 10,959

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 2	$ 1
Inventory Valuation Reserves	$ 20	$ 18
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	25	25
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	900	900
Common stock, shares issued	425	422
Common stock, shares, outstanding	296	306
Treasury stock, shares	129	116

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,105	$ 1,928	$ 3,977	$ 3,682
OPERATING EXPENSES
Aircraft fuel and related taxes	484	491	921	908
Salaries, wages and benefits	576	486	1,151	985
Landing fees and other rents	121	122	237	230
Depreciation and amortization	127	114	251	226
Aircraft rent	25	24	50	48
Sales and marketing	75	75	141	142
Maintenance materials and repairs	168	188	324	329
Other operating expenses	277	261	563	522
Special Items	2	319	14	319
Total operating expenses	1,855	2,080	3,652	3,709
OPERATING INCOME (LOSS)	250	(152)	325	(27)
OTHER INCOME (EXPENSE)
Interest expense	(19)	(16)	(38)	(32)
Capitalized interest	3	3	6	5
Interest income and other	2	3	1	5
Total other income (expense)	(14)	(10)	(31)	(22)
INCOME (LOSS) BEFORE INCOME TAXES	236	(162)	294	(49)
Income tax expense (benefit)	57	(41)	73	(18)
NET INCOME (LOSS)	$ 179	$ (121)	$ 221	$ (31)
EARNINGS PER COMMON SHARE:
Earnings Per Share, Basic	$ 0.60	$ (0.39)	$ 0.73	$ (0.10)
Earnings Per Share, Diluted	$ 0.59	$ (0.39)	$ 0.73	$ (0.10)
Passenger [Member]
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,031	$ 1,858	$ 3,833	$ 3,549
Product and Service, Other [Member]
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 74	$ 70	$ 144	$ 133

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 179	$ (121)	$ 221	$ (31)
Changes in fair value of derivative instruments, net of reclassifications into earnings (net of tax benefit/(expense) of $1 and $0 in 2019 and 2018, respectively)	2	0	4	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	1	0	1	0
Total other comprehensive income	2	0	4	0
COMPREHENSIVE INCOME (LOSS)	$ 181	$ (121)	$ 225	$ (31)

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net Income	$ 221	$ (31)
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	46	(36)
Depreciation	229	205
Amortization	22	21
Stock-based compensation	17	14
Impairment of Long-Lived Assets Held-for-use	0	319
Changes in certain operating assets and liabilities	430	233
Other, net	3	(3)
Net cash provided by operating activities	968	722
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(328)	(368)
Predelivery deposits for flight equipment	(142)	(38)
Purchase of held-to-maturity investments	(289)	(175)
Proceeds from the maturities of held-to-maturity investments	250	211
Purchase of available-for-sale securities	(609)	(210)
Proceeds from the sale of available-for-sale securities	545	250
Other, net	5	(11)
Net cash used in investing activities	(568)	(341)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common stock	27	24
Proceeds from Issuance of Long-term Debt	0	279
Repayment of long-term debt and finance lease obligations	(182)	(124)
Acquisition of treasury stock	(256)	(257)
Net cash used in financing activities	(411)	(78)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	(11)	303
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	522	662
Interest Paid, Excluding Capitalized Interest, Operating Activities	33	26
Income Taxes Paid, Net	(88)	10
Cash and cash equivalents	461	603
Restricted Cash and Cash Equivalents, Noncurrent	$ 61	$ 59

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity Statement - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	AOCI Attributable to Noncontrolling Interest [Member]
Common Stock, Shares, Outstanding		418
Treasury Stock, Shares			97
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 4,805	$ 4	$ (890)	$ 2,127	$ 3,564		$ 0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		1
Stock Issued During Period, Shares, Employee Stock Purchase Plans				2
Stock Repurchased During Period, Shares			11
NET INCOME (LOSS)	(31)				(31)
Other Comprehensive Income (Loss), Net of Tax	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(7)		$ (7)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	14			$ 14
Stock Issued During Period, Value, Employee Stock Purchase Plan				23
Stock Repurchased During Period, Value	(250)		$ 225	25
Common Stock, Shares, Outstanding		419
Treasury Stock, Shares			103
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,771	$ 4	$ (1,021)	2,134	3,654		0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		0
Stock Issued During Period, Shares, Employee Stock Purchase Plans		2
Stock Repurchased During Period, Shares			5
NET INCOME (LOSS)	(121)				(121)
Other Comprehensive Income (Loss), Net of Tax	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(1)		$ (1)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	6			6
Stock Issued During Period, Value, Employee Stock Purchase Plan				24
Stock Repurchased During Period, Value	(125)		$ 100	25
Common Stock, Shares, Outstanding		421
Treasury Stock, Shares			108
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 4,554	$ 4	$ (1,122)	2,139	3,533		0
Common Stock, Shares, Outstanding	306	422
Treasury Stock, Shares	116		116
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 4,685	$ 4	$ (1,272)	$ 2,203	3,753		(3)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		1
Stock Issued During Period, Shares, Employee Stock Purchase Plans				2
Stock Repurchased During Period, Shares			13
NET INCOME (LOSS)	221				221
Other Comprehensive Income (Loss), Net of Tax	4					$ 4
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(6)		$ (6)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	17			$ 17
Stock Issued During Period, Value, Employee Stock Purchase Plan				26
Stock Repurchased During Period, Value	(250)		$ 225	25
Common Stock, Shares, Outstanding		423
Treasury Stock, Shares			122
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,607	$ 4	$ (1,377)	$ 2,186	3,795		(1)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		0
Stock Issued During Period, Shares, Employee Stock Purchase Plans				2
Stock Repurchased During Period, Shares			7
NET INCOME (LOSS)	179				179
Other Comprehensive Income (Loss), Net of Tax	2
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(1)		$ (1)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	8			$ 8
Stock Issued During Period, Value, Employee Stock Purchase Plan				27
Stock Repurchased During Period, Value	$ (125)		$ 125	0
Common Stock, Shares, Outstanding	296	425
Treasury Stock, Shares	129		129
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 4,697	$ 4	$ (1,503)	$ 2,221	$ 3,974		$ 1

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation JetBlue Airways Corporation, or JetBlue, provides air transportation services across the United States, the Caribbean and Latin America. Our condensed consolidated financial statements include the accounts of JetBlue and our subsidiaries which are collectively referred to as “we” or the “Company”. All majority-owned subsidiaries are consolidated on a line by line basis, with all intercompany transactions and balances being eliminated. These condensed consolidated financial statements and related notes should be read in conjunction with our 2018 audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2018 , or our 2018 Form 10-K. These condensed consolidated financial statements are unaudited and have been prepared by us following the rules and regulations of the U.S. Securities and Exchange Commission, or the SEC. In our opinion they reflect all adjustments, including normal recurring items, that are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the U.S., or GAAP, have been condensed or omitted as permitted by such rules and regulations; however, we believe that the disclosures are adequate to make the information presented not misleading. Due to seasonal variations in the demand for air travel, the volatility of aircraft fuel prices and other factors, our operating results for the periods presented herein are not necessarily indicative of the results that may be expected for other interim periods or the entire fiscal year. We recast financial information previously filed under Accounting Standards Codification (ASC), or the Codification, Topic 840, Leases for the periods presented to reflect the modified retrospective method of transition to Accounting Standards Update (ASU) 2016-02, Leases (Topic 842) of the Codification. Refer to Note 4 to our consolidated financial statements for more information. Investment Securities Investment securities consist of available-for-sale investment securities and held-to-maturity investment securities. We use a specific identification method to determine the cost of the securities when they are sold. Held-to-maturity investment securities. The contractual maturities of the held-to-maturity investments we held as of June 30, 2019 were not greater than 24 months. We did not record any significant gains or losses on these securities during the three and six months ended June 30, 2019 or 2018 . The estimated fair value of these investments approximated their carrying value as of June 30, 2019 and December 31, 2018 , respectively. The carrying values of investment securities consisted of the following at June 30, 2019 and December 31, 2018 (in millions): June 30, 2019 December 31, 2018 Available-for-sale securities Time deposits $ 290 $ 190 U.S. Treasury — 39 Debt securities 7 7 Total available-for-sale securities 297 236 Held-to-maturity securities U.S. Treasury 155 180 Total investment securities $ 452 $ 416 Other Investments Our wholly-owned subsidiary, JetBlue Technology Ventures, LLC, or JTV, has equity investments in emerging companies which do not have readily determinable fair values. In accordance with ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , we account for these investments using a measurement alternative which allows entities to measure these investments at cost, less any impairment, adjusted for changes from observable price changes in orderly transactions for identifiable or similar investments of the same issuer. The carrying amount of these investments were $26 million and $25 million as of June 30, 2019 and December 31, 2018 , respectively. Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board, or FASB, issued ASU 2016-02, Leases (Topic 842) of the Codification, which requires lessees to recognize leases on the balance sheet and disclose key information about leasing arrangements. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842 ; ASU 2018-10, Codification Improvements to Topic 842, Leases ; ASU 2018-11, Targeted Improvements; ASU 2018-20, Narrow-Scope Improvements for Lessors ; and ASU 2019-01, Leases (Topic 842): Codification Improvements . Under the new standard, a lessee will recognize liabilities on the balance sheet, initially measured at the present value of the lease payments, and right-of-use (ROU) assets representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less at the commencement date, a lessee is permitted to make an accounting policy election not to recognize lease assets and lease liabilities. The new standard also eliminates the build-to-suit lease accounting guidance which results in the derecognition of build-to-suit assets and liabilities that remained on the balance sheet after the end of the construction period. We adopted the requirements of ASU 2016-02 as of January 1, 2019, utilizing the modified retrospective method of transition for all leases existing at or commencing after the date of initial application. We recorded a $58 million cumulative adjustment to retained earnings as of January 1, 2017, the beginning of the retrospective reporting period, for the impact of the new accounting standard. The adjustment to retained earnings was driven principally by the derecognition of our existing assets constructed for others and construction obligation related to our Terminal 5 (T5) build-to-suit project at John F. Kennedy International Airport in New York. We elected to use the package of transition provisions available for expired or existing contracts, which allowed us to carryforward our historical assessment of whether contracts are or contain leases, lease classification, and initial direct costs. Refer to Note 4 to our consolidated financial statements for more information. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement . The update eliminates, adds, and modifies certain disclosure requirements for fair value measurements. ASU 2018-13 is effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted of the entire standard or only the provisions that eliminate or modify disclosure requirements. We are still evaluating the full impact of adopting the amendments on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other— Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The update provides guidance for determining if a cloud computing arrangement is within the scope of internal-use software guidance, and would require capitalization of certain implementation costs. ASU 2018-15 is effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted. We adopted the requirements of ASU 2018-15 on April 1, 2019 using the prospective transition method. The adoption of this amendment did not have a material impact on our consolidated financial statements.

Revenue Recognition (Notes)

Revenue Recognition (Notes)	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue Recognition The Company categorizes the revenues received from contracts with its customers by revenue source as we believe it best depicts the nature, amount, timing, and uncertainty of our revenue and cash flow. The following table provides the revenues recognized by revenue source for the three and six months ended June 30, 2019 and 2018 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Passenger revenue Passenger travel $ 1,981 $ 1,820 $ 3,733 $ 3,471 Loyalty revenue - air transportation 50 38 100 78 Other revenue Loyalty revenue 49 44 93 80 Other revenue 25 26 51 53 Total revenues $ 2,105 $ 1,928 $ 3,977 $ 3,682 Contract Liabilities Our contract liabilities primarily consist of ticket sales for which transportation has not yet been provided, unused credits available to customers, and outstanding loyalty points available for redemption. (in millions) June 30, 2019 December 31, 2018 Contract liabilities Air traffic liability - passenger travel $ 1,133 $ 892 Air traffic liability - loyalty program (air transportation) 617 580 Deferred revenue 10 10 Total contract liabilities $ 1,760 $ 1,482 During the six months ended June 30, 2019 and 2018 , we recognized revenue of $819 million and $759 million , respectively, which was included in contract liabilities at the beginning of the respective periods. The Company elected the practical expedient that allows entities to not disclose the amount of the remaining transaction price and its expected timing of recognition for passenger tickets if the contract has an original expected duration of one year or less or if certain other conditions are met. We elected to apply this practical expedient to our contract liabilities relating to passenger travel and ancillary services as our tickets or any related passenger credits expire one year from the date of issuance. TrueBlue ® points are combined in one homogeneous pool and are not separately identifiable. As such, the revenue is comprised of the points that were part of the air traffic liability balance at the beginning of the period as well as points that were issued during the period. The table below presents the activity of the current and non-current air traffic liability for TrueBlue ® points, and includes points earned and sold to participating companies (in millions): Balance at December 31, 2018 $ 580 TrueBlue® points redeemed (100 ) TrueBlue® points earned and sold 137 Balance at June 30, 2019 $ 617 Balance at December 31, 2017 $ 502 TrueBlue® points redeemed (78 ) TrueBlue® points earned and sold 112 Balance at June 30, 2018 $ 536 The timing of our TrueBlue ® point redemptions can vary; however, the majority of our points are redeemed within approximately three years of the date of issuance.

Long-term Debt and Short-term B

Long-term Debt and Short-term Borrowings (Notes)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Long-term Debt, Short-term Borrowings, and Capital Lease Obligations	Long-Term Debt, Short-Term Borrowings, and Finance Lease Obligations During the six months ended June 30, 2019 , we made scheduled principal payments of $182 million on our outstanding long-term debt and finance lease obligations. We had pledged aircraft, engines, other equipment and facilities with a net book value of $2.8 billion at June 30, 2019 as security under various financing arrangements. At June 30, 2019 , scheduled maturities of all of our long-term debt and finance lease obligations were $128 million for the remainder of 2019 , $273 million in 2020 , $263 million in 2021 , $240 million in 2022 , $223 million in 2023 , and $365 million thereafter. The carrying amounts and estimated fair values of our long-term debt, net of debt acquisition costs, at June 30, 2019 and December 31, 2018 were as follows (in millions): June 30, 2019 December 31, 2018 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Public Debt Fixed rate special facility bonds, due through 2036 $ 42 $ 45 $ 42 $ 44 Non-Public Debt Fixed rate enhanced equipment notes, due through 2023 140 147 151 153 Floating rate equipment notes, due through 2028 223 225 245 245 Fixed rate equipment notes, due through 2028 988 1,054 1,125 1,135 Total (1) $ 1,393 $ 1,471 $ 1,563 $ 1,577 (1) Total excludes finance lease obligations of $99 million for June 30, 2019 and $107 million for December 31, 2018 . The estimated fair values of our publicly held long-term debt are classified as Level 2 in the fair value hierarchy. The fair values of our enhanced equipment notes and our special facility bonds were based on quoted market prices in markets with low trading volumes. The fair value of our non-public debt was estimated using a discounted cash flow analysis based on our borrowing rates for instruments with similar terms and therefore classified as Level 3 in the fair value hierarchy. The fair values of our other financial instruments approximate their carrying values. Refer to Note 9 to our consolidated financial statements for an explanation of the fair value hierarchy structure. We have financed certain aircraft with Enhanced Equipment Trust Certificates, or EETCs. One of the benefits of this structure is being able to finance several aircraft at one time, rather than individually. The structure of EETC financing is that we create pass-through trusts in order to issue pass-through certificates. The proceeds from the issuance of these certificates are then used to purchase equipment notes which are issued by us and are secured by our aircraft. These trusts meet the definition of a variable interest entity, or VIE, as defined in the Consolidations topic of the Codification, and must be considered for consolidation in our condensed consolidated financial statements. Our assessment of our EETCs considers both quantitative and qualitative factors including the purpose for which these trusts were established and the nature of the risks in each. The main purpose of the trust structure is to enhance the credit worthiness of our debt obligation through certain bankruptcy protection provisions, liquidity facilities and lower our total borrowing cost. We concluded that we are not the primary beneficiary in these trusts because our involvement in them is limited to principal and interest payments on the related notes, the trusts were not set up to pass along variability created by credit risk to us and the likelihood of our defaulting on the notes. Therefore, we have not consolidated these trusts in our condensed consolidated financial statements. Short-term Borrowings Citibank Line of Credit We have a revolving Credit and Guaranty Agreement with Citibank, N.A. as the administrative agent, for up to approximately $425 million . The term of the facility runs through April 2021. Borrowings under the Credit and Guaranty Agreement bear interest at a variable rate equal to LIBOR, plus a margin . The Credit and Guaranty Agreement is secured by Slots at John F. Kennedy International Airport, LaGuardia Airport and Reagan National Airport as well as certain other assets. Slots are rights to take-off or land at a specific airport during a specific time period and are a means by which airport capacity and congestion can be managed. The Credit and Guaranty Agreement includes covenants that require us to maintain certain minimum balances in unrestricted cash, cash equivalents, and unused commitments available under revolving credit facilities. In addition, the covenants restrict our ability to, among other things, dispose of certain collateral, or merge, consolidate, or sell assets. As of and for the periods ended June 30, 2019 and December 31, 2018 , we did not have a balance outstanding or any borrowings under this line of credit. Morgan Stanley Line of Credit We have a revolving line of credit with Morgan Stanley for up to approximately $200 million . This line of credit is secured by a portion of our investment securities held by Morgan Stanley and the amount available to us under this line of credit may vary accordingly. This line of credit bears interest at a floating rate based upon LIBOR, plus a margin . As of and for the periods ended June 30, 2019 and December 31, 2018 , we did not

Leases (Notes)

Leases (Notes)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Lessee, Operating Leases [Text Block]	Leases As discussed in Note 1 to our consolidated financial statements, we adopted ASU 2016-02, Leases (Topic 842) of the Codification, as of January 1, 2019. The new standard requires leases with durations greater than twelve months to be recognized on the balance sheet. Our 2018 and 2017 financial statements have been recast to reflect the retrospective application of the new standard. Operating lease assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease assets and liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. Leases with a term of 12 months or less are not recorded on the balance sheet. Our lease agreements do not contain any residual value guarantees. For facility leases, we account for the lease and non-lease components as a single lease component. The table below presents the lease-related assets and liabilities recorded on our consolidated balance sheets (in millions): Classification on Balance Sheet June 30, December 31, Assets Operating lease assets Operating lease assets $ 998 $ 1,056 Finance lease assets Property and equipment, net 174 181 Total lease assets $ 1,172 $ 1,237 Liabilities Current: Operating lease liabilities Current operating lease liabilities $ 133 $ 133 Finance lease liabilities Current maturities of long-term debt and finance leases 18 18 Long-term: Operating lease liabilities Long-term operating lease liabilities 753 798 Finance lease liabilities Long-term debt and finance lease obligations 81 89 Total lease liabilities $ 985 $ 1,038 June 30, December 31, Weighted-average remaining lease term (in years) Operating leases 11 11 Finance leases 3 4 Weighted-average discount rate Operating leases 5.96 % 5.95 % Finance leases 4.79 % 4.73 % Flight Equipment Leases We operated a fleet of 254 aircraft as of June 30, 2019 . Of our fleet, 42 aircraft were under operating leases and six aircraft were under finance leases. Our aircraft leases generally have long durations with remaining terms of three months to nine years. The majority of aircraft operating leases can be renewed at rates based on fair market value at the end of the lease term for one or two years. None of our aircraft operating leases have variable rate rent payments. We have purchase options for 42 of our aircraft leases at the end of their lease term. These purchase options are at fair market value and have a one-time option during the term at fixed amounts that were expected to approximate the fair market value at lease inception. Facility Leases Our facility leases are primarily for space at the airports we serve. These leases are classified as operating leases and reflect our use of passenger terminal service facilities consisting of ticket counters, gate space, operations support area, and baggage service offices. We generally lease space directly or indirectly from the local airport authority on varying terms dependent on prevailing practices at each airport. The remaining terms of our airport leases vary from six months to 16 years. Our leases at certain airports contain provisions for periodic adjustments of rental rates based on the operating costs of the airports or the frequency of use of the facilities. Because of the variable nature of the rates, these leases are not recorded as operating lease assets and operating lease liabilities on our condensed consolidated balance sheets. We also have leases for our corporate offices, training center, and various hangars and airport support facilities at our focus cities. Other Ground Property and Equipment We lease certain IT assets, ground support equipment, and various other pieces of equipment. The lease terms of our ground support equipment are less than 12 months, while the amount of other equipment we have is not significant. Lease Costs The table below presents certain information related to our lease costs during the three and six months ended June 30, 2019 and 2018 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Operating lease cost $ 46 $ 44 $ 92 $ 89 Short-term lease cost 1 1 1 1 Finance lease cost: Amortization of assets 2 2 4 4 Interest on lease liabilities 1 1 2 2 Variable lease cost 99 101 194 188 Sublease income (4 ) (4 ) (7 ) (7 ) Total net lease cost $ 145 $ 145 $ 286 $ 277 Other Information The table below presents supplemental cash flow information related to leases during the three and six months ended June 30, 2019 and 2018 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows for operating leases $ 35 $ 44 $ 75 $ 80 Operating cash flows for finance leases 1 1 3 3 Financing cash flows for finance leases 2 2 9 8 Lease Commitments The table below presents scheduled future minimum lease payments for operating and finance leases recorded on our consolidated balance sheets, as of June 30, 2019 (in millions): As of June 30, 2019 Operating Leases Finance Leases 2019 $ 66 $ 11 2020 132 35 2021 127 39 2022 118 10 2023 109 10 Thereafter 678 5 Total minimum lease payments 1,230 110 Less: amount of lease payments representing interest (344 ) (11 ) Present value of future minimum lease payments 886 99 Less: current obligations under leases (133 ) (18 ) Long-term lease obligations $ 753 $ 81 We do not have any lease commitments that have not yet commenced as of June 30, 2019 .

Earnings Per Share (Notes)

Earnings Per Share (Notes)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Earnings Per Share Basic earnings per share is calculated by dividing net income by the weighted average number of shares outstanding during the period. Diluted earnings per share is calculated similarly but includes potential dilution from restricted stock units, the Crewmember Stock Purchase Plan, and any other potentially dilutive instruments using the treasury stock method. There were no anti-dilutive common stock equivalents during the three and six months ended June 30, 2019. Anti-dilutive common stock equivalents excluded from the computation of diluted earnings per shares amounts were 1.4 million and 1.5 million for the three and six months ended June 30, 2018, respectively. The following is a reconciliation of weighted average shares and a calculation of earnings per share (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net income (loss) (1) $ 179 $ (121 ) $ 221 $ (31 ) Weighted average basic shares 300.3 315.0 303.1 318.0 Effect of dilutive securities 1.5 — 1.5 — Weighted average diluted shares 301.8 315.0 304.6 318.0 Earnings per common share Basic $ 0.60 $ (0.39 ) $ 0.73 $ (0.10 ) Diluted 0.59 (0.39 ) 0.73 (0.10 ) (1) As discussed in Note 1 to our consolidated financial statements, we adopted ASC 842, Leases, as of January 1, 2019. The adoption of this standard impacted previously reported net income by approximately $(1) million and $1 million for the three and six months ended June 30, 2018 . On June 13, 2019, JetBlue entered into an accelerated share repurchase agreement, or ASR, paying $125 million for an initial delivery of 5.2 million shares. The term of the ASR is expected to be completed by the end of the third quarter of 2019, and the final number of shares to be received or returned will be determined. On March 11, 2019, JetBlue entered into an ASR paying $125 million for an initial delivery of 6.1 million shares. The term of the ASR concluded on May 21, 2019 with delivery of 1.3 million additional shares to JetBlue on May 22, 2019. A total of 7.4 million shares, at an average price of $16.93 per share, were repurchased under the agreement. On May 24, 2018, JetBlue entered into an ASR paying $125 million for an initial delivery of 5.3 million shares. The term of the ASR concluded on July 23, 2018 with delivery of 1.3 million additional shares to JetBlue on July 25, 2018. A total of 6.6 million shares, at an average price of $18.85 per share, were repurchased under the agreement. On March 1, 2018, JetBlue entered into an ASR paying $125 million for an initial delivery of 4.7 million shares. The term of the ASR concluded on March 23, 2018 with delivery of 1.1 million additional shares to JetBlue on March 26, 2018. A total of 5.8 million shares, at an average price of $21.49 per share, were repurchased under the agreement.

Employee Retirement Plan (Notes

Employee Retirement Plan (Notes)	6 Months Ended
	Jun. 30, 2019
Retirement Benefits [Abstract]
Compensation and Employee Benefit Plans [Text Block]	Crewmember Retirement Plan We sponsor a retirement savings 401(k) defined contribution plan, or the Plan, covering all of our Crewmembers where we match 100% of our Crewmembers' contributions up to 5% of their eligible wages. The contributions vest over three years and are measured from a Crewmember's hire date. Crewmembers are immediately vested in their voluntary contributions. Another component of the Plan is a Company discretionary contribution of 5% of eligible non-management Crewmember compensation, which we refer to as Retirement Plus. Retirement Plus contributions vest over three years and are measured from a Crewmember's hire date. Certain Federal Aviation Administration, or FAA, licensed Crewmembers receive an additional contribution of 3% of eligible compensation, which we refer to as Retirement Advantage. Effective August 1, 2018, JetBlue pilots receive a non-elective Company contribution of 15% of eligible pilot compensation per the terms of the finalized collective bargaining agreement between JetBlue and the Air Line Pilots Association, or ALPA, in lieu of the above 401(k) Company matching contribution, Retirement Plus , and Retirement Advantage contributions. Refer to Note 11 to our consolidated financial statements for additional information. The Company's non-elective contribution of 15% of eligible pilot compensation vests after three years of service. Our non-management Crewmembers are eligible to receive profit sharing, calculated as 10% of adjusted pre-tax income before profit sharing and special items up to a pre-tax margin of 18% with the result reduced by Retirement Plus contributions and the equivalent of Retirement Plus contributions for pilots. If JetBlue's resulting pre-tax margin exceeds 18% , non-management Crewmembers will receive 20% profit sharing above an 18% pre-tax margin. Total 401(k) company match, Retirement Plus, Retirement Advantage , pilot retirement contribution, and profit sharing expensed for the three months ended June 30, 2019 and 2018 was $49 million and $37 million , respectively, while the total amount expensed for the six months ended June 30, 2019 and 2018 was $98 million and $78 million

Commitments and Contingencies (

Commitments and Contingencies (Notes)	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Commitments and Contingencies Flight Equipment Commitments In April 2019, we announced our intention to launch multiple daily flights from John F. Kennedy International Airport and Boston Logan International Airport to London in 2021. In connection with our plans to launch flights to London, we amended our purchase agreement with Airbus to convert 13 A321 new engine option (A321neo) deliveries into A321 Long Range (A321LR) deliveries. In June 2019, we further amended our purchase agreement with Airbus to convert an additional 13 A321neo deliveries into A321 Xtra Long Range (A321XLR) deliveries. In addition, we also converted 10 of our options for the Airbus A220-300 aircraft into firm orders. As of June 30, 2019 , our firm aircraft orders consisted of 84 Airbus A321neo aircraft and 70 Airbus A220 aircraft, all scheduled for delivery through 2026. Expenditures for these aircraft and related flight equipment and engines, including estimated amounts for contractual price escalations and predelivery deposits, will be approximately $871 million for the remainder of 2019 , $1.2 billion in 2020 , $1.4 billion in 2021 , $1.3 billion in 2022 , $1.7 billion in 2023 , and $2.2 billion thereafter . The amount of committed expenditures stated above represents the current delivery schedule set forth in our Airbus order book as of June 30, 2019 . In October 2018 and May 2019, we received notice from Airbus of anticipated delivery delays for the A321neo aircraft. We expect a delivery of a maximum of six A321neo aircraft in 2019 as a result of the delays. Other Commitments We utilize several credit card processors to process our ticket sales. Our agreements with these processors do not contain covenants, but do generally allow the processor to withhold cash reserves to protect the processor from potential liability for tickets purchased, but not yet used for travel. While we currently do not have any collateral requirements related to our credit card processors, we may be required to issue collateral to our credit card processors, or other key business partners, in the future. As of June 30, 2019 , we had approximately $27 million in assets serving as collateral for letters of credit relating to a certain number of our leases. These are included in restricted cash and expire at the end of the related lease terms. Additionally, we had approximately $33 million in assets pledged related to our workers compensation insurance policies and other business partner agreements which will expire according to the terms of the related policies or agreements. In April 2014, ALPA was certified by the National Mediation Board, or NMB, as the representative body for JetBlue pilots after winning a representation election. We reached a final agreement for our first collective bargaining agreement which was ratified by the pilots in July 2018. The agreement is a four-year, renewable contract, which became effective August 1, 2018 and included compensation, benefits, work rules, and other policies. In April 2018, JetBlue inflight Crewmembers elected to be solely represented by the Transport Workers Union of America, or TWU. The NMB certified the TWU as the representative body for JetBlue inflight Crewmembers and we are working with the TWU to reach a collective bargaining agreement. Except as noted above, our Crewmembers do not have third party representation. Legal Matters Occasionally, we are involved in various claims, lawsuits, regulatory examinations, investigations and other legal matters arising, for the most part, in the ordinary course of business. The outcome of litigation and other legal matters is always uncertain. The Company believes it has valid defenses to the legal matters currently pending against it, is defending itself vigorously and has recorded accruals determined in accordance with GAAP, where appropriate. In making a determination regarding accruals, using available information, we evaluate the likelihood of an unfavorable outcome in legal or regulatory proceedings to which we are a party and record a loss contingency when it is probable a liability has been incurred and the amount of the loss can be reasonably estimated. These subjective determinations are based on the status of such legal or regulatory proceedings, the merits of our defenses and consultation with legal counsel. Actual outcomes of these legal and regulatory proceedings may materially differ from our current estimates. It is possible that resolution of one or more of the legal matters currently pending or threatened could result in losses material to our consolidated results of operations, liquidity or financial condition. To date, none of these types of litigation matters, most of which are typically covered by insurance, has had a material impact on our operations or financial condition. We have insured and continue to insure against most of these types of claims. A judgment on any claim not covered by, or in excess of, our insurance coverage could materially adversely affect our financial condition or results of operations.

Financial Derivative Instrument

Financial Derivative Instruments and Risk Management (Notes)	6 Months Ended
	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivative Instruments and Risk Management	Financial Derivative Instruments and Risk Management As part of our risk management techniques, we periodically purchase over the counter energy derivative instruments and enter into fixed forward price agreements, or FFPs, to manage our exposure to the effect of changes in the price of aircraft fuel. Prices for the underlying commodities have historically been highly correlated to aircraft fuel, making derivatives of them effective at providing short-term protection against sharp increases in average fuel prices. We also periodically enter into jet fuel basis swaps for the differential between heating oil and jet fuel, to further limit the variability in fuel prices at various locations. We do not hold or issue any derivative financial instruments for trading purposes. Aircraft Fuel Derivatives We attempt to obtain cash flow hedge accounting treatment for each fuel derivative that we enter into. This treatment is provided for under the Derivatives and Hedging topic of the Codification which allows for gains and losses on the effective portion of qualifying hedges to be deferred until the underlying planned jet fuel consumption occurs, rather than recognizing the gains and losses on these instruments into earnings during each period they are outstanding. The effective portion of realized fuel hedging derivative gains and losses is recognized in aircraft fuel expense in the period during which the underlying fuel is consumed. Ineffectiveness occurs, in certain circumstances, when the change in the total fair value of the derivative instrument differs from the change in the value of our expected future cash outlays for the purchase of aircraft fuel. ASU 2017-12 Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities eliminated the requirement for companies to separately measure and record ineffectiveness after initial qualification. If a hedge does not qualify for hedge accounting, the periodic changes in its fair value are also recognized in interest income and other. When aircraft fuel is consumed and the related derivative contract settles, any gain or loss previously recorded in other comprehensive income is recognized in aircraft fuel expense. All cash flows related to our fuel hedging derivatives are classified as operating cash flows. Our current approach to fuel hedging is to enter into hedges on a discretionary basis without a specific target of hedge percentage needs. We view our hedge portfolio as a form of insurance to help mitigate the impact of price volatility and protect us against severe spikes in oil prices, when possible. The following table illustrates the approximate hedged percentages of our projected fuel usage by quarter as of June 30, 2019 related to our outstanding fuel hedging contracts that were designated as cash flow hedges for accounting purposes. Jet fuel call option spread agreements Total Third Quarter 2019 — % — % Fourth Quarter 2019 10 % 10 % First Quarter 2020 10 % 10 % Second Quarter 2020 10 % 10 % The table below reflects quantitative information related to our derivative instruments and where these amounts are recorded in our financial statements (dollar amounts in millions): Fuel derivatives June 30, December 31, Asset fair value recorded in prepaid expense and other (1) $ 5 $ — Longest remaining term (months) 12 6 Hedged volume (barrels, in thousands) 1,572 756 Estimated amount of existing (gains) losses expected to be reclassified into earnings in the next 12 months $ (1 ) $ 4 Three Months Ended June 30, Six Months Ended June 30, Fuel derivatives 2019 2018 2019 2018 Hedge effectiveness (gains) losses recognized in aircraft fuel expense $ 2 $ — $ 4 $ — Hedge (gains) losses on derivatives recognized in comprehensive income (1 ) — (1 ) — Percentage of actual consumption economically hedged 7 % — % 7 % — % (1) Gross asset of each contract prior to consideration of offsetting positions with each counterparty and prior to the impact of collateral paid. Any outstanding derivative instrument exposes us to credit loss in connection with our fuel contracts in the event of nonperformance by the counterparties to our agreements, but we do not expect that any of our counterparties will fail to meet their obligations. The amount of such credit exposure is generally the fair value of our outstanding contracts for which we are in a receivable position. To manage credit risks we select counterparties based on credit assessments, limit our overall exposure to any single counterparty and monitor the market position with each counterparty. Some of our agreements require cash deposits from either JetBlue or our counterparty if market risk exposure exceeds a specified threshold amount. We have master netting arrangements with our counterparties allowing us the right of offset to mitigate credit risk in derivative transactions. The financial derivative instrument agreements we have with our counterparties may require us to fund all, or a portion of, outstanding loss positions related to these contracts prior to their scheduled maturities. The amount of collateral posted, if any, is periodically adjusted based on the fair value of the hedge contracts. Our policy is to offset the liabilities represented by these contracts with any cash collateral paid to the counterparties. There were no offsetting derivative instruments as of June 30, 2019 and December 31, 2018 .

Fair Value of Financial Instrum

Fair Value of Financial Instruments (Notes)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value Under the Fair Value Measurements and Disclosures topic of the Codification, disclosures are required about how fair value is determined for assets and liabilities and a hierarchy for which these assets and liabilities must be grouped is established, based on significant levels of inputs as follows: Level 1 quoted prices in active markets for identical assets or liabilities; Level 2 quoted prices in active markets for similar assets and liabilities and inputs that are observable for the asset or liability; or Level 3 unobservable inputs for the asset or liability, such as discounted cash flow models or valuations. The determination of where assets and liabilities fall within this hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following is a listing of our assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within the fair value hierarchy as of June 30, 2019 and December 31, 2018 (in millions): June 30, 2019 Assets Level 1 Level 2 Level 3 Total Cash equivalents $ 136 $ — $ — $ 136 Available-for-sale investment securities — 297 — 297 Aircraft fuel derivatives — 5 — 5 December 31, 2018 Assets Level 1 Level 2 Level 3 Total Cash equivalents $ 198 $ — $ — $ 198 Available-for-sale investment securities 39 197 — 236 Aircraft fuel derivatives — — — — Refer to Note 3 to our consolidated financial statements for fair value information related to our outstanding debt obligations as of June 30, 2019 and December 31, 2018 . Cash Equivalents Our cash equivalents include money market securities and commercial paper which are readily convertible into cash, have maturities of 90 days or less when purchased and are considered to be highly liquid and easily tradable. These securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within our fair value hierarchy. Available-For-Sale Investment Securities Included in our available-for-sale investment securities are U.S. Treasury bills, time deposits, commercial paper and debt securities. The U.S. Treasury bills are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within the fair value hierarchy. The fair values of the remaining instruments are based on observable inputs in non-active markets, which are therefore classified as Level 2 in the hierarchy. We did not record any material gains or losses on these securities during the three and six months ended June 30, 2019 and 2018 . Aircraft Fuel Derivatives

Comprehensive Income (Notes)

Comprehensive Income (Notes)	6 Months Ended
	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive Income (Loss) Note [Text Block]	Accumulated Other Comprehensive Income (Loss) Comprehensive income (loss) includes changes in fair value of our aircraft fuel derivatives which qualify for hedge accounting. A rollforward of the amounts included in the accumulated other comprehensive income (loss), net of taxes for the three months ended June 30, 2019 and 2018 are as follows (in millions): Aircraft Fuel Derivatives (1) Total Balance of accumulated (losses) at March 31, 2019 $ (1 ) $ (1 ) Reclassifications into earnings, net of tax benefit $1 1 1 Change in fair value, net of tax benefit $0 1 1 Balance of accumulated income at June 30, 2019 $ 1 $ 1 Balance of accumulated income at March 31, 2018 $ — $ — Reclassifications into earnings, net of tax benefit $0 — — Change in fair value, net of tax benefit of $0 — — Balance of accumulated income at June 30, 2018 $ — $ — (1) Reclassified to aircraft fuel expense A rollforward of the amounts included in the accumulated other comprehensive income (loss), net of taxes for the six months ended June 30, 2019 and 2018 are as follows (in millions): Aircraft Fuel Derivatives (1) Total Balance of accumulated (losses) at December 31, 2018 $ (3 ) $ (3 ) Reclassifications into earnings, net of tax benefit $1 3 3 Change in fair value, net of tax benefit $0 1 1 Balance of accumulated income at June 30, 2019 $ 1 $ 1 Balance of accumulated income at December 31, 2017 $ — $ — Reclassifications into earnings, net of tax benefit $0 — — Change in fair value, net of tax benefit $0 — — Balance of accumulated income at June 30, 2018 $ — $ — (1) Reclassified to aircraft fuel expense

Special Items (Notes)

Special Items (Notes)	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Unusual or Infrequent Items, or Both, Disclosure [Text Block]	Special Items The following is a listing of special items presented on our consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, Special Items 2019 2018 2019 2018 Embraer E190 fleet transition costs (1) $ — $ 319 $ 9 $ 319 Union contract costs (2) 2 — 5 — Total $ 2 $ 319 $ 14 $ 319 (1) In July 2018, we announced our decision to exit the Embraer E190 fleet and order 60 Airbus A220-300 aircraft, formerly known as the Bombardier CS300, for expected deliveries beginning in 2020 with the option for 60 additional aircraft. As discussed in Note 7, we exercised our option in June 2019 and converted 10 additional A220-300 aircraft into firm deliveries. We expect to transition Embraer E190 aircraft starting in 2020, and we expect the transition to be completed through 2025. Fleet transition costs for the six months ended June 30, 2019, include certain contract termination costs associated with the transition. For the three and six months ended June 30, 2018, fleet transition costs include a $319 million impairment charge of flight equipment and other property and equipment related to our fleet review. Additional expenses may be recorded in future periods as we continue to work through the transition of our Embraer E190 fleet.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of presentation	Basis of Presentation JetBlue Airways Corporation, or JetBlue, provides air transportation services across the United States, the Caribbean and Latin America. Our condensed consolidated financial statements include the accounts of JetBlue and our subsidiaries which are collectively referred to as “we” or the “Company”. All majority-owned subsidiaries are consolidated on a line by line basis, with all intercompany transactions and balances being eliminated. These condensed consolidated financial statements and related notes should be read in conjunction with our 2018 audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2018 , or our 2018 Form 10-K. These condensed consolidated financial statements are unaudited and have been prepared by us following the rules and regulations of the U.S. Securities and Exchange Commission, or the SEC. In our opinion they reflect all adjustments, including normal recurring items, that are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the U.S., or GAAP, have been condensed or omitted as permitted by such rules and regulations; however, we believe that the disclosures are adequate to make the information presented not misleading. Due to seasonal variations in the demand for air travel, the volatility of aircraft fuel prices and other factors, our operating results for the periods presented herein are not necessarily indicative of the results that may be expected for other interim periods or the entire fiscal year. We recast financial information previously filed under Accounting Standards Codification (ASC), or the Codification, Topic 840, Leases for the periods presented to reflect the modified retrospective method of transition to Accounting Standards Update (ASU) 2016-02, Leases (Topic 842) of the Codification. Refer to Note 4 to our consolidated financial statements for more information.
Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block]	Investment Securities Investment securities consist of available-for-sale investment securities and held-to-maturity investment securities. We use a specific identification method to determine the cost of the securities when they are sold. Held-to-maturity investment securities. The contractual maturities of the held-to-maturity investments we held as of June 30, 2019 were not greater than 24 months. We did not record any significant gains or losses on these securities during the three and six months ended June 30, 2019 or 2018 . The estimated fair value of these investments approximated their carrying value as of June 30, 2019 and December 31, 2018 , respectively. The carrying values of investment securities consisted of the following at June 30, 2019 and December 31, 2018 (in millions): June 30, 2019 December 31, 2018 Available-for-sale securities Time deposits $ 290 $ 190 U.S. Treasury — 39 Debt securities 7 7 Total available-for-sale securities 297 236 Held-to-maturity securities U.S. Treasury 155 180 Total investment securities $ 452 $ 416 Available-For-Sale Investment Securities Included in our available-for-sale investment securities are U.S. Treasury bills, time deposits, commercial paper and debt securities. The U.S. Treasury bills are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within the fair value hierarchy. The fair values of the remaining instruments are based on observable inputs in non-active markets, which are therefore classified as Level 2 in the hierarchy. We did not record any material gains or losses on these securities during the three and six months ended June 30, 2019 and 2018 .
Cost Method Investments, Policy [Policy Text Block]	Other Investments Our wholly-owned subsidiary, JetBlue Technology Ventures, LLC, or JTV, has equity investments in emerging companies which do not have readily determinable fair values. In accordance with ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , we account for these investments using a measurement alternative which allows entities to measure these investments at cost, less any impairment, adjusted for changes from observable price changes in orderly transactions for identifiable or similar investments of the same issuer. The carrying amount of these investments were $26 million and $25 million as of June 30, 2019 and December 31, 2018 , respectively.
New Accounting Pronouncements [Policy Text Block]	Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board, or FASB, issued ASU 2016-02, Leases (Topic 842) of the Codification, which requires lessees to recognize leases on the balance sheet and disclose key information about leasing arrangements. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842 ; ASU 2018-10, Codification Improvements to Topic 842, Leases ; ASU 2018-11, Targeted Improvements; ASU 2018-20, Narrow-Scope Improvements for Lessors ; and ASU 2019-01, Leases (Topic 842): Codification Improvements . Under the new standard, a lessee will recognize liabilities on the balance sheet, initially measured at the present value of the lease payments, and right-of-use (ROU) assets representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less at the commencement date, a lessee is permitted to make an accounting policy election not to recognize lease assets and lease liabilities. The new standard also eliminates the build-to-suit lease accounting guidance which results in the derecognition of build-to-suit assets and liabilities that remained on the balance sheet after the end of the construction period. We adopted the requirements of ASU 2016-02 as of January 1, 2019, utilizing the modified retrospective method of transition for all leases existing at or commencing after the date of initial application. We recorded a $58 million cumulative adjustment to retained earnings as of January 1, 2017, the beginning of the retrospective reporting period, for the impact of the new accounting standard. The adjustment to retained earnings was driven principally by the derecognition of our existing assets constructed for others and construction obligation related to our Terminal 5 (T5) build-to-suit project at John F. Kennedy International Airport in New York. We elected to use the package of transition provisions available for expired or existing contracts, which allowed us to carryforward our historical assessment of whether contracts are or contain leases, lease classification, and initial direct costs. Refer to Note 4 to our consolidated financial statements for more information. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement . The update eliminates, adds, and modifies certain disclosure requirements for fair value measurements. ASU 2018-13 is effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted of the entire standard or only the provisions that eliminate or modify disclosure requirements. We are still evaluating the full impact of adopting the amendments on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other— Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The update provides guidance for determining if a cloud computing arrangement is within the scope of internal-use software guidance, and would require capitalization of certain implementation costs. ASU 2018-15 is effective for annual reporting periods beginning after December 15, 2019, with early adoption permitted. We adopted the requirements of ASU 2018-15 on April 1, 2019 using the prospective transition method. The adoption of this amendment did not have a material impact on our consolidated financial statements.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Equivalents Our cash equivalents include money market securities and commercial paper which are readily convertible into cash, have maturities of 90 days or less when purchased and are considered to be highly liquid and easily tradable. These securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within our fair value hierarchy.
Derivatives, Policy [Policy Text Block]	Aircraft Fuel Derivatives

Long-term Debt and Short-term_2

Long-term Debt and Short-term Borrowings Short-Term Borrowings (Policies)	6 Months Ended
	Jun. 30, 2019
Short-Term Borrowing Disclosure [Abstract]
Short-term Debt [Text Block]	Short-term Borrowings Citibank Line of Credit We have a revolving Credit and Guaranty Agreement with Citibank, N.A. as the administrative agent, for up to approximately $425 million . The term of the facility runs through April 2021. Borrowings under the Credit and Guaranty Agreement bear interest at a variable rate equal to LIBOR, plus a margin . The Credit and Guaranty Agreement is secured by Slots at John F. Kennedy International Airport, LaGuardia Airport and Reagan National Airport as well as certain other assets. Slots are rights to take-off or land at a specific airport during a specific time period and are a means by which airport capacity and congestion can be managed. The Credit and Guaranty Agreement includes covenants that require us to maintain certain minimum balances in unrestricted cash, cash equivalents, and unused commitments available under revolving credit facilities. In addition, the covenants restrict our ability to, among other things, dispose of certain collateral, or merge, consolidate, or sell assets. As of and for the periods ended June 30, 2019 and December 31, 2018 , we did not have a balance outstanding or any borrowings under this line of credit. Morgan Stanley Line of Credit We have a revolving line of credit with Morgan Stanley for up to approximately $200 million . This line of credit is secured by a portion of our investment securities held by Morgan Stanley and the amount available to us under this line of credit may vary accordingly. This line of credit bears interest at a floating rate based upon LIBOR, plus a margin . As of and for the periods ended June 30, 2019 and December 31, 2018 , we did not

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Schedule of marketable securities	The carrying values of investment securities consisted of the following at June 30, 2019 and December 31, 2018 (in millions): June 30, 2019 December 31, 2018 Available-for-sale securities Time deposits $ 290 $ 190 U.S. Treasury — 39 Debt securities 7 7 Total available-for-sale securities 297 236 Held-to-maturity securities U.S. Treasury 155 180 Total investment securities $ 452 $ 416

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	The following table provides the revenues recognized by revenue source for the three and six months ended June 30, 2019 and 2018 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Passenger revenue Passenger travel $ 1,981 $ 1,820 $ 3,733 $ 3,471 Loyalty revenue - air transportation 50 38 100 78 Other revenue Loyalty revenue 49 44 93 80 Other revenue 25 26 51 53 Total revenues $ 2,105 $ 1,928 $ 3,977 $ 3,682
Contract with Customer, Asset and Liability [Table Text Block]	Our contract liabilities primarily consist of ticket sales for which transportation has not yet been provided, unused credits available to customers, and outstanding loyalty points available for redemption. (in millions) June 30, 2019 December 31, 2018 Contract liabilities Air traffic liability - passenger travel $ 1,133 $ 892 Air traffic liability - loyalty program (air transportation) 617 580 Deferred revenue 10 10 Total contract liabilities $ 1,760 $ 1,482 The table below presents the activity of the current and non-current air traffic liability for TrueBlue ® points, and includes points earned and sold to participating companies (in millions): Balance at December 31, 2018 $ 580 TrueBlue® points redeemed (100 ) TrueBlue® points earned and sold 137 Balance at June 30, 2019 $ 617 Balance at December 31, 2017 $ 502 TrueBlue® points redeemed (78 ) TrueBlue® points earned and sold 112 Balance at June 30, 2018 $ 536

Long-term Debt and Short-term_3

Long-term Debt and Short-term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of Long Term Debt	The carrying amounts and estimated fair values of our long-term debt, net of debt acquisition costs, at June 30, 2019 and December 31, 2018 were as follows (in millions): June 30, 2019 December 31, 2018 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Public Debt Fixed rate special facility bonds, due through 2036 $ 42 $ 45 $ 42 $ 44 Non-Public Debt Fixed rate enhanced equipment notes, due through 2023 140 147 151 153 Floating rate equipment notes, due through 2028 223 225 245 245 Fixed rate equipment notes, due through 2028 988 1,054 1,125 1,135 Total (1) $ 1,393 $ 1,471 $ 1,563 $ 1,577 (1) Total excludes finance lease obligations of $99 million for June 30, 2019 and $107 million for December 31, 2018 .

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Schedule of Lease Assets and Liabilities [Table Text Block]	The table below presents the lease-related assets and liabilities recorded on our consolidated balance sheets (in millions): Classification on Balance Sheet June 30, December 31, Assets Operating lease assets Operating lease assets $ 998 $ 1,056 Finance lease assets Property and equipment, net 174 181 Total lease assets $ 1,172 $ 1,237 Liabilities Current: Operating lease liabilities Current operating lease liabilities $ 133 $ 133 Finance lease liabilities Current maturities of long-term debt and finance leases 18 18 Long-term: Operating lease liabilities Long-term operating lease liabilities 753 798 Finance lease liabilities Long-term debt and finance lease obligations 81 89 Total lease liabilities $ 985 $ 1,038 June 30, December 31, Weighted-average remaining lease term (in years) Operating leases 11 11 Finance leases 3 4 Weighted-average discount rate Operating leases 5.96 % 5.95 % Finance leases 4.79 % 4.73 %
Lease, Cost [Table Text Block]	The table below presents certain information related to our lease costs during the three and six months ended June 30, 2019 and 2018 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Operating lease cost $ 46 $ 44 $ 92 $ 89 Short-term lease cost 1 1 1 1 Finance lease cost: Amortization of assets 2 2 4 4 Interest on lease liabilities 1 1 2 2 Variable lease cost 99 101 194 188 Sublease income (4 ) (4 ) (7 ) (7 ) Total net lease cost $ 145 $ 145 $ 286 $ 277
Schedule of Leases, Supplemental Cash Flows [Table Text Block]	The table below presents supplemental cash flow information related to leases during the three and six months ended June 30, 2019 and 2018 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows for operating leases $ 35 $ 44 $ 75 $ 80 Operating cash flows for finance leases 1 1 3 3 Financing cash flows for finance leases 2 2 9 8
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	The table below presents scheduled future minimum lease payments for operating and finance leases recorded on our consolidated balance sheets, as of June 30, 2019 (in millions): As of June 30, 2019 Operating Leases Finance Leases 2019 $ 66 $ 11 2020 132 35 2021 127 39 2022 118 10 2023 109 10 Thereafter 678 5 Total minimum lease payments 1,230 110 Less: amount of lease payments representing interest (344 ) (11 ) Present value of future minimum lease payments 886 99 Less: current obligations under leases (133 ) (18 ) Long-term lease obligations $ 753 $ 81

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Earnings Per Share Basic earnings per share is calculated by dividing net income by the weighted average number of shares outstanding during the period. Diluted earnings per share is calculated similarly but includes potential dilution from restricted stock units, the Crewmember Stock Purchase Plan, and any other potentially dilutive instruments using the treasury stock method. There were no anti-dilutive common stock equivalents during the three and six months ended June 30, 2019. Anti-dilutive common stock equivalents excluded from the computation of diluted earnings per shares amounts were 1.4 million and 1.5 million for the three and six months ended June 30, 2018, respectively. The following is a reconciliation of weighted average shares and a calculation of earnings per share (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net income (loss) (1) $ 179 $ (121 ) $ 221 $ (31 ) Weighted average basic shares 300.3 315.0 303.1 318.0 Effect of dilutive securities 1.5 — 1.5 — Weighted average diluted shares 301.8 315.0 304.6 318.0 Earnings per common share Basic $ 0.60 $ (0.39 ) $ 0.73 $ (0.10 ) Diluted 0.59 (0.39 ) 0.73 (0.10 ) (1) As discussed in Note 1 to our consolidated financial statements, we adopted ASC 842, Leases, as of January 1, 2019. The adoption of this standard impacted previously reported net income by approximately $(1) million and $1 million for the three and six months ended June 30, 2018 . On June 13, 2019, JetBlue entered into an accelerated share repurchase agreement, or ASR, paying $125 million for an initial delivery of 5.2 million shares. The term of the ASR is expected to be completed by the end of the third quarter of 2019, and the final number of shares to be received or returned will be determined. On March 11, 2019, JetBlue entered into an ASR paying $125 million for an initial delivery of 6.1 million shares. The term of the ASR concluded on May 21, 2019 with delivery of 1.3 million additional shares to JetBlue on May 22, 2019. A total of 7.4 million shares, at an average price of $16.93 per share, were repurchased under the agreement. On May 24, 2018, JetBlue entered into an ASR paying $125 million for an initial delivery of 5.3 million shares. The term of the ASR concluded on July 23, 2018 with delivery of 1.3 million additional shares to JetBlue on July 25, 2018. A total of 6.6 million shares, at an average price of $18.85 per share, were repurchased under the agreement. On March 1, 2018, JetBlue entered into an ASR paying $125 million for an initial delivery of 4.7 million shares. The term of the ASR concluded on March 23, 2018 with delivery of 1.1 million additional shares to JetBlue on March 26, 2018. A total of 5.8 million shares, at an average price of $21.49 per share, were repurchased under the agreement.
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following is a reconciliation of weighted average shares and a calculation of earnings per share (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net income (loss) (1) $ 179 $ (121 ) $ 221 $ (31 ) Weighted average basic shares 300.3 315.0 303.1 318.0 Effect of dilutive securities 1.5 — 1.5 — Weighted average diluted shares 301.8 315.0 304.6 318.0 Earnings per common share Basic $ 0.60 $ (0.39 ) $ 0.73 $ (0.10 ) Diluted 0.59 (0.39 ) 0.73 (0.10 ) (1) As discussed in Note 1 to our consolidated financial statements, we adopted ASC 842, Leases, as of January 1, 2019. The adoption of this standard impacted previously reported net income by approximately $(1) million and $1 million for the three and six months ended June 30, 2018 .

Financial Derivative Instrume_2

Financial Derivative Instruments and Risk Management (Tables)	6 Months Ended
	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Percentage fuel covered under derivative contracts	The following table illustrates the approximate hedged percentages of our projected fuel usage by quarter as of June 30, 2019 related to our outstanding fuel hedging contracts that were designated as cash flow hedges for accounting purposes. Jet fuel call option spread agreements Total Third Quarter 2019 — % — % Fourth Quarter 2019 10 % 10 % First Quarter 2020 10 % 10 % Second Quarter 2020 10 % 10 %
Derivative instrument in statement of financial position and financial performance	The table below reflects quantitative information related to our derivative instruments and where these amounts are recorded in our financial statements (dollar amounts in millions): Fuel derivatives June 30, December 31, Asset fair value recorded in prepaid expense and other (1) $ 5 $ — Longest remaining term (months) 12 6 Hedged volume (barrels, in thousands) 1,572 756 Estimated amount of existing (gains) losses expected to be reclassified into earnings in the next 12 months $ (1 ) $ 4 Three Months Ended June 30, Six Months Ended June 30, Fuel derivatives 2019 2018 2019 2018 Hedge effectiveness (gains) losses recognized in aircraft fuel expense $ 2 $ — $ 4 $ — Hedge (gains) losses on derivatives recognized in comprehensive income (1 ) — (1 ) — Percentage of actual consumption economically hedged 7 % — % 7 % — % (1) Gross asset of each contract prior to consideration of offsetting positions with each counterparty and prior to the impact of collateral paid.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair value, by balance sheet grouping	The following is a listing of our assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within the fair value hierarchy as of June 30, 2019 and December 31, 2018 (in millions): June 30, 2019 Assets Level 1 Level 2 Level 3 Total Cash equivalents $ 136 $ — $ — $ 136 Available-for-sale investment securities — 297 — 297 Aircraft fuel derivatives — 5 — 5 December 31, 2018 Assets Level 1 Level 2 Level 3 Total Cash equivalents $ 198 $ — $ — $ 198 Available-for-sale investment securities 39 197 — 236 Aircraft fuel derivatives — — — — Refer to Note 3 to our consolidated financial statements for fair value information related to our outstanding debt obligations as of June 30, 2019 and December 31, 2018 .

Comprehensive Income (Tables)

Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	Comprehensive income (loss) includes changes in fair value of our aircraft fuel derivatives which qualify for hedge accounting. A rollforward of the amounts included in the accumulated other comprehensive income (loss), net of taxes for the three months ended June 30, 2019 and 2018 are as follows (in millions): Aircraft Fuel Derivatives (1) Total Balance of accumulated (losses) at March 31, 2019 $ (1 ) $ (1 ) Reclassifications into earnings, net of tax benefit $1 1 1 Change in fair value, net of tax benefit $0 1 1 Balance of accumulated income at June 30, 2019 $ 1 $ 1 Balance of accumulated income at March 31, 2018 $ — $ — Reclassifications into earnings, net of tax benefit $0 — — Change in fair value, net of tax benefit of $0 — — Balance of accumulated income at June 30, 2018 $ — $ — (1) Reclassified to aircraft fuel expense A rollforward of the amounts included in the accumulated other comprehensive income (loss), net of taxes for the six months ended June 30, 2019 and 2018 are as follows (in millions): Aircraft Fuel Derivatives (1) Total Balance of accumulated (losses) at December 31, 2018 $ (3 ) $ (3 ) Reclassifications into earnings, net of tax benefit $1 3 3 Change in fair value, net of tax benefit $0 1 1 Balance of accumulated income at June 30, 2019 $ 1 $ 1 Balance of accumulated income at December 31, 2017 $ — $ — Reclassifications into earnings, net of tax benefit $0 — — Change in fair value, net of tax benefit $0 — — Balance of accumulated income at June 30, 2018 $ — $ — (1) Reclassified to aircraft fuel expense

Special Items (Tables)

Special Items (Tables)	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Schedule of Unusual or Infrequent Items, or Both [Table Text Block]	The following is a listing of special items presented on our consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, Special Items 2019 2018 2019 2018 Embraer E190 fleet transition costs (1) $ — $ 319 $ 9 $ 319 Union contract costs (2) 2 — 5 — Total $ 2 $ 319 $ 14 $ 319 (1) In July 2018, we announced our decision to exit the Embraer E190 fleet and order 60 Airbus A220-300 aircraft, formerly known as the Bombardier CS300, for expected deliveries beginning in 2020 with the option for 60 additional aircraft. As discussed in Note 7, we exercised our option in June 2019 and converted 10 additional A220-300 aircraft into firm deliveries. We expect to transition Embraer E190 aircraft starting in 2020, and we expect the transition to be completed through 2025. Fleet transition costs for the six months ended June 30, 2019, include certain contract termination costs associated with the transition. For the three and six months ended June 30, 2018, fleet transition costs include a $319 million impairment charge of flight equipment and other property and equipment related to our fleet review. Additional expenses may be recorded in future periods as we continue to work through the transition of our Embraer E190 fleet. (2) In April 2014, ALPA was certified by NMB as the representative body for JetBlue pilots after winning a representation election. We reached a final agreement for our first collective bargaining agreement which was ratified by the pilots in July 2018. The agreement is a four-year renewable contract effective August 1, 2018 which included changes to compensation, benefits, work rules, and other policies. For the three and six months ended June 30, 2019, union contract costs primarily include various one-time costs incurred to implement the provisions of the collective bargaining agreement into our IT systems.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Jan. 01, 2017
Debt Securities, Available-for-sale [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets						$ 58
Available-for-sale securities
Available-for-sale investment securities	$ 297		$ 297		$ 236
Debt Securities, Available-for-sale	7		7		7
Held-to-maturity securities	155		155		180
Marketable securities	452		452		416
Cost Method Investments - JetBlue Tech Ventures	26		26		25
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)	0	$ 0	0	$ 0
Bank Time Deposits [Member]
Available-for-sale securities
Available-for-sale investment securities	290		290		190
US Treasury Bill Securities [Member]
Available-for-sale securities
Available-for-sale investment securities	$ 0		$ 0		$ 39

Summary of Significant Accoun_5

Summary of Significant Accounting Policies Held-to-Maturity Gains (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)	$ 0	$ 0	$ 0	$ 0

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,981	$ 1,820	$ 3,733	$ 3,471
Passenger Revenue - Loyalty Air Travel	50	38	100	78
Other Revenue - Loyalty	49	44	93	80
Other Revenue - Non Loyalty	25	26	51	53
Revenue from Contract with Customer, Excluding Assessed Tax	2,105	1,928	3,977	3,682
Air Traffic Liability - Passenger Travel	1,133		1,133		$ 892
Air Traffic Liability - Loyalty Program (Air Transportation)	617		617		580
Other Deferred Revenue	10		10		10
Contract with Customer, Liability	1,760		1,760		1,482
Air Traffic Liability	$ 617	$ 536	617	536	$ 580	$ 502
Increase (Decrease) to Air Traffic Liability - Points Redeemed			(100)	(78)
Increase (Decrease) to Air Traffic Liability - Points Earned			137	112
Contract with Customer, Liability, Revenue Recognized			$ 819	$ 759
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 years		3 years

Long-term Debt and Short-term_4

Long-term Debt and Short-term Borrowings (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Reduction in outstanding debt and capital lease obligations	$ 182
Value of aircraft, engines and other equipment and facilities which were pledged as security under various loan agreements	2,800
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	128
Long-term debt, maturities, repayments of principal in Year Two	273
Long-term debt, maturities, repayments of principal in Year Three	263
Long-term debt, maturities, repayments of principal in Year Four	240
Long-term debt, maturities, repayments of principal in Year Five	223
Long-term debt, maturities, repayments of principal after Year Five	365
Capital Lease Obligations	99	$ 107
Carrying amounts and estimated fair values of long-term debt
Carrying Value, Total	1,393	1,563
Estimated Fair Value, Total	1,471	1,577
Public Debt Fixed Rate Special Facility Bonds Due Through Two Thousand Thirty Six [Member]
Carrying amounts and estimated fair values of long-term debt
Carrying Value, Total	42	42
Estimated Fair Value, Total	45	44
Non Public Debt Fixed Rate Enhanced Equipment Notes Due Through Two Thousand And Twenty Three [Member]
Carrying amounts and estimated fair values of long-term debt
Carrying Value, Total	140	151
Estimated Fair Value, Total	147	153
Non Public Debt Floating Rate Equipment Notes Due Through Two Thousand And Twenty Five [Member]
Carrying amounts and estimated fair values of long-term debt
Carrying Value, Total	223	245
Estimated Fair Value, Total	225	245
Non Public Debt Fixed Rate Equipment Notes Due Through Two Thousand Twenty Six [Member]
Carrying amounts and estimated fair values of long-term debt
Carrying Value, Total	988	1,125
Estimated Fair Value, Total	1,054	1,135
Citibank [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	425
Carrying amounts and estimated fair values of long-term debt
Line of Credit, Current	0	0
Morgan Stanley [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200
Carrying amounts and estimated fair values of long-term debt
Line of Credit, Current	$ 0	$ 0
London Interbank Offered Rate (LIBOR) [Member] | Citibank [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR, plus a margin
London Interbank Offered Rate (LIBOR) [Member] | Morgan Stanley [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR, plus a margin

Long-term Debt and Short-term_5

Long-term Debt and Short-term Borrowings Short-term Borrowings (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Citibank [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 425
Line of Credit, Current	0	$ 0
Morgan Stanley [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200
Line of Credit, Current	$ 0	$ 0
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member] | Citibank [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR, plus a margin
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member] | Morgan Stanley [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR, plus a margin

Leases (Details)

Leases (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)aircraft	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)aircraft	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 998		$ 998		$ 1,056
Finance Lease, Right-of-Use Asset	174		174		181
Lease, Right-of-Use Asset	1,172		1,172		1,237
Operating Lease, Liability, Current	(133)		(133)		(133)
Operating Lease, Liability, Noncurrent	753		753		798
Finance Lease, Liability, Current	(18)		(18)		(18)
Finance Lease, Liability, Noncurrent	81		81		89
Lease, Liability	$ 985		$ 985		$ 1,038
Operating Lease, Weighted Average Remaining Lease Term	11 years		11 years		11 years
Operating Lease, Weighted Average Discount Rate, Percent	5.96%		5.96%		5.95%
Finance Lease, Weighted Average Remaining Lease Term	3 years		3 years		4 years
Finance Lease, Weighted Average Discount Rate, Percent	4.79%		4.79%		4.73%
Number of Aircraft in Fleet | aircraft	254		254
Operating Lease, Number of Aircraft Leases | aircraft	42		42
Finance Lease, Number of Aircraft Leases | aircraft	6		6
Operating Lease, Number of Aircraft Leases with Variable Rent | aircraft	0		0
Aircraft Leases, Purchase Options | aircraft	42		42
Aircraft Leases, Minimum Remaining Lease Term			3 months
Aircraft Leases, Maximum Remaining Lease Term			9 years
Facility Leases, Minimum Lease Term Remaining			6 months
Facility Leases, Maximum Lease Term Remaining			16 years
Operating Lease, Cost	$ 46	$ 44	$ 92	$ 89
Short-term Lease, Cost	1	1	1	1
Finance Lease, Right-of-Use Asset, Amortization	2	2	4	4
Finance Lease, Interest Expense	1	1	2	2
Variable Lease, Cost	99	101	194	188
Sublease Income	(4)	(4)	(7)	(7)
Lease, Cost	145	145	286	277
Operating Lease, Payments	35	44	75	80
Finance Lease, Interest Payment on Liability	1	1	3	3
Finance Lease, Principal Payments	2	$ 2	9	$ 8
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	66		66
Lessee, Operating Lease, Liability, Payments, Due Year Two	132		132
Lessee, Operating Lease, Liability, Payments, Due Year Three	127		127
Lessee, Operating Lease, Liability, Payments, Due Year Four	118		118
Lessee, Operating Lease, Liability, Payments, Due Year Five	109		109
Lessee, Operating Lease, Liability, Payments, Due after Year Five	678		678
Lessee, Operating Lease, Liability, Payments, Due	1,230		1,230
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(344)		(344)
Operating Lease, Liability	886		886
Finance Lease, Liability, Payments, Remainder of Fiscal Year	11		11
Finance Lease, Liability, Payments, Due Year Two	35		35
Finance Lease, Liability, Payments, Due Year Three	39		39
Finance Lease, Liability, Payments, Due Year Four	10		10
Finance Lease, Liability, Payments, Due Year Five	10		10
Finance Lease, Liability, Payments, Due after Year Five	5		5
Finance Lease, Liability, Payment, Due	110		110
Finance Lease, Liability, Undiscounted Excess Amount	(11)		(11)
Finance Lease, Liability	99		99
Lessee, Finance and Operating Lease, Lease Not Yet Commenced, Amount	$ 0		$ 0

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Jun. 14, 2019	Mar. 12, 2019	May 25, 2018	Mar. 02, 2018	Mar. 23, 2018	Mar. 23, 2018	May 21, 2019	May 21, 2019	Jul. 23, 2018	Jul. 23, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net Income											$ 179	$ (121)	$ 221	$ (31)
Earnings per common share
Basic											300.3	315	303.1	318
Earnings Per Share, Basic											$ 0.60	$ (0.39)	$ 0.73	$ (0.10)
Diluted
Employee stock options, restricted stock units and stock purchase plan											1.5	0	1.5	0
Adjusted weighted average shares outstanding and assumed conversions for diluted earnings per share											301.8	315	304.6	318
Earnings Per Share, Diluted											$ 0.59	$ (0.39)	$ 0.73	$ (0.10)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income												$ (1)		$ 1
Shares excluded from EPS calculation (in millions):
Shares issuable upon exercise of outstanding stock options or vesting of restricted stock units as assumed exercise would be antidilutive											0	1.4	0	1.5
Accelerated Share Repurchases, Settlement (Payment) or Receipt	$ 125	$ 125	$ 125	$ 125
Treasury Stock, Shares, Acquired	5.2	6.1	5.3	4.7	5.8	1.1	1.3	7.4	1.3	6.6
Accelerated Share Repurchases, Final Price Paid Per Share					$ 21.49			$ 16.93		$ 18.85
Retained Earnings [Member]
Numerator:
Net Income											$ 179	$ (121)	$ 221	$ (31)

Employee Retirement Plan (Detai

Employee Retirement Plan (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Retirement Benefits [Abstract]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match			100.00%
Employee Retirement Plan (Textuals) [Abstract]
Percentage of employees' gross pay for which the employer contributes a matching contribution to the Plan.			5.00%
Defined Contribution Plan Requisite Service Period			3 years
Percentage of employees' gross pay for which the employer can contribute a discretionary profit sharing contribution to the Plan.			5.00%
Retirement Plus Contribution Plan Requisite Service Period for Vesting			3 years
Percent of Eligible Pre-tax Profits the Company Contributes to Profit Sharing until the Pre-tax Margin is 18%			10.00%
Profit Sharing Calculation Trigger, Pretax Margin			18.00%
Percentage of Eligible Pre-tax Profits the Company Contributes to Profit Sharing when Pre-tax Margin is above 18%			20.00%
Percentage of FAA licensed employees gross pay for which ER can contribute discretionary profit sharing contribution to plan			3.00%
Percentage of Company Contribution to Pilots Retirement Program			15.00%
Pilots Retirement Vesting Period			3 years
Contribution to employee retirement plan	$ 49	$ 37	$ 98	$ 78

Commitments and Contingencies_2

Commitments and Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)aircraft	Jun. 20, 2019aircraft	Apr. 10, 2019aircraft
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	$ 871
Unrecorded Unconditional Purchase Obligation, Due within Two Years	1,200
Unrecorded Unconditional Purchase Obligation, Due within Three Years	1,400
Unrecorded Unconditional Purchase Obligation, Due within Four Years	1,300
Unrecorded Unconditional Purchase Obligation, Due within Five Years	1,700
Unrecorded Unconditional Purchase Obligation, Due after Five Years	$ 2,200
Number of Airbus A321neo Converted to A321 LR | aircraft			13
Number of Airbus A321neo Converted to A321 XLR | aircraft		13
Number of options converted A220 | aircraft	10
Restricted assets pledged under letter of credit	$ 27
Restricted Assets Pledged Related To Workers Compensation Insurance Policies And Other Business Partner Agreements	$ 33
A-321 Neo [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligations Disclosure | aircraft	84
A220-300 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligations Disclosure | aircraft	70
Number of Aircraft Expected to be Delivered within Fiscal Year | aircraft	6

Financial Derivative Instrume_3

Financial Derivative Instruments and Risk Management (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Derivative [Line Items]
Percentage Fuel Hedged - Third Quarter Current Year	0.00%		0.00%
Percentage Fuel Hedged - Fourth Quarter Current Year	10.00%		10.00%
Percentage Fuel Hedged - First Quarter Second Year	10.00%		10.00%
Percentage Fuel Hedged - Second Quarter Second Year	10.00%		10.00%
Interest expense	$ (19,000,000)	$ (16,000,000)	$ (38,000,000)	$ (32,000,000)
Fuel Derivatives [Member]
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 0		$ 0		$ 0
Fuel [Member] | Call Option [Member]
Derivative [Line Items]
Percentage Fuel Hedged - Third Quarter Current Year	0.00%		0.00%
Percentage Fuel Hedged - Fourth Quarter Current Year	10.00%		10.00%
Percentage Fuel Hedged - First Quarter Second Year	10.00%		10.00%
Percentage Fuel Hedged - Second Quarter Second Year	10.00%		10.00%
Fair Value, Recurring [Member]
Derivative [Line Items]
Derivative Asset	$ 5,000,000		$ 5,000,000		0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Derivative [Line Items]
Derivative Asset	0		0		0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Derivative [Line Items]
Derivative Asset	$ 5,000,000		$ 5,000,000		$ 0

Financial Derivative Instrume_4

Financial Derivative Instruments and Risk Management (Details 2) bbl in Thousands, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019USD ($)bbl	Dec. 31, 2018USD ($)bbl	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)bbl	Jun. 30, 2018USD ($)
Derivatives, Fair Value [Line Items]
Hedged volume (barrels, in thousands)	$ (1)	$ 4		$ (1)
Interest Expense	$ 19		$ 16	$ 38	$ 32
Fuel Derivatives [Member]
Derivatives, Fair Value [Line Items]
Maximum Length of Time Hedged in Price Risk Cash Flow Hedge		6 months		12 months
Liability fair value recorded in other accrued liabilities(1) | bbl	1,572	756		1,572
Prepaid Expenses and Other Current Assets [Member] | Fuel Derivatives [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	$ 5	$ 0		$ 5

Financial Derivative Instrume_5

Financial Derivative Instruments and Risk Management - Hedging Effectiveness (Details 3) - Fuel Derivatives [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of actual consumption hedged	7.00%	0.00%	7.00%	0.00%
Aircraft Fuel Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedge losses recognized	$ 2	$ 0	$ 4	$ 0
Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of actual consumption economically hedged	$ (1)	$ 0	$ (1)	$ 0

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Assets and liabilities to be measured at fair value on a recurring basis
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	$ 0	$ 0	$ 0	$ 0
Assets
Available-for-sale investment securities	297		297		$ 236
Fair Value, Recurring [Member]
Assets
Cash equivalents	136		136		198
Available-for-sale investment securities	297		297		236
Derivative Asset	5		5		0
Fair Value, Recurring [Member] | Level 1 [Member]
Assets
Cash equivalents	136		136		198
Available-for-sale investment securities	0		0		39
Derivative Asset	0		0		0
Fair Value, Recurring [Member] | Level 2 [Member]
Assets
Cash equivalents	0		0		0
Available-for-sale investment securities	297		297		197
Derivative Asset	5		5		0
Fair Value, Recurring [Member] | Level 3 [Member]
Assets
Cash equivalents	0		0		0
Available-for-sale investment securities	0		0		0
Derivative Asset	$ 0		$ 0		$ 0

Comprehensive Income (Details)

Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	$ 1	$ 0	$ 1	$ 0
Beginning accumulated gains (losses)	(1)	0	(3)	0
Reclassifications into earnings	1	0	3	0
Change in fair value	1	0	1	0
Ending accumulated losses	1	0	1	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	0	0	0	0
Fuel Derivatives [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning accumulated gains (losses)		0		0
Reclassifications into earnings	1	0	3	0
Change in fair value	1	0	1	0
Ending accumulated losses	$ 1	$ 0	$ 1	$ 0

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	$ 1	$ 0	$ 3	$ 0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1	0	1	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	1	0	1	0	$ (1)	$ (3)	$ 0	$ 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	1	0	1	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	0	0	0	0
Fuel Derivatives [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	1	0	3	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1	0	1	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 1	$ 0	$ 1	$ 0			$ 0	$ 0

Special Items (Details)

Special Items (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jul. 07, 2018aircraft
Property, Plant and Equipment [Line Items]
Special Items - E190 Fleet Exit	$ 0	$ 319	$ 9	$ 319
Special Items - Union Contract Costs	2	0	5	0
Special Items	2	319	14
Impairment of Long-Lived Assets Held-for-use			0	319
Number of Optional Aircraft Deliveries | aircraft					60
Special Items	$ 2	$ 319	$ 14	$ 319
A220-300 [Member]
Property, Plant and Equipment [Line Items]
Number of Expected Aircraft Deliveries - July 2018 MOU | aircraft					60

Uncategorized Items - q22019for

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 359,000,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 533,000,000