Hawaiian (HA) 10-Q 31 Jul 24 2024 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2024	Jul. 26, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	1-31443
Entity Registrant Name	HAWAIIAN HOLDINGS INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	71-0879698
Entity Address, Address Line One	3375 Koapaka Street,
Entity Address, Address Line Two	Suite G-350
Entity Address, City or Town	Honolulu,
Entity Address, State or Province	HI
Entity Address, Postal Zip Code	96819
City Area Code	(808)
Local Phone Number	835-3700
Title of 12(b) Security	Common Stock ($0.01 par value)
Trading Symbol	HA
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		52,009,785
Entity Central Index Key	0001172222
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Current Fiscal Year End Date	--12-31

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating Revenue:
Total	$ 731,905		$ 706,928		$ 1,377,472	$ 1,319,531
Operating Expenses:
Wages and benefits	265,024		237,680		526,959	479,613
Aircraft fuel, including taxes and delivery	179,153		166,380		367,931	364,005
Maintenance, materials and repairs	69,897		53,657		140,868	103,943
Aircraft and passenger servicing	47,854		43,126		93,278	85,658
Depreciation and amortization	35,068		33,348		68,035	66,015
Aircraft rent	29,891		26,159		59,597	54,330
Commissions and other selling	29,068		28,391		57,511	56,630
Other rentals and landing fees	45,011		41,487		88,138	80,207
Purchased services	39,025		37,181		77,500	72,254
Special items	6,497		0		14,979	0
Other	40,804		49,099		86,709	83,884
Total	787,292		716,508		1,581,505	1,446,539
Operating Loss	(55,387)		(9,580)		(204,033)	(127,008)
Nonoperating Income (Expense):
Interest expense and amortization of debt discounts and issuance costs	(28,324)		(22,705)		(52,393)	(45,585)
Interest income	11,134		13,539		21,155	30,004
Capitalized interest	2,541		1,945		5,675	3,404
Losses on fuel derivatives	(1,863)		(3,658)		(2,445)	(8,724)
Other components of net periodic benefit cost	(927)		(1,707)		(1,854)	(3,201)
Losses on investments, net	(654)		(3,549)		(184)	(2,852)
Gains on foreign debt	6,470		12,174		14,989	14,434
Other, net	(584)		(920)		(1,354)	(764)
Total	(12,207)		(4,881)		(16,411)	(13,284)
Loss Before Income Taxes	(67,594)		(14,461)		(220,444)	(140,292)
Income tax expense (benefit)	0		(2,126)		(15,285)	(29,700)
Net Loss	$ (67,594)	$ (137,565)	$ (12,335)	$ (98,257)	$ (205,159)	$ (110,592)
Net Loss Per Share
Basic (in dollars per share)	$ (1.30)		$ (0.24)		$ (3.95)	$ (2.15)
Diluted (in dollars per share)	$ (1.30)		$ (0.24)		$ (3.95)	$ (2.15)
Weighted Average Number of Common Stock Shares Outstanding:
Basic (in shares)	51,932		51,587		51,885	51,547
Diluted (in shares)	51,932		51,587		51,885	51,547
Passenger
Operating Revenue:
Total	$ 666,029		$ 644,992		$ 1,249,477	$ 1,193,518
Other
Operating Revenue:
Total	$ 65,876		$ 61,936		$ 127,995	$ 126,013

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Loss	$ (67,594)	$ (12,335)	$ (205,159)	$ (110,592)
Other comprehensive income (loss), net:
Net change related to employee benefit plans, net of tax expense and tax benefit	348	475	698	(6,603)
Net change in available-for-sale investments, net of tax expense	495	52	1,262	5,078
Total other comprehensive income (loss)	843	527	1,960	(1,525)
Total Comprehensive Loss	$ (66,751)	$ (11,808)	$ (203,199)	$ (112,117)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net change related to employee benefit plans, tax expense (benefit)	$ 114	$ 248	$ 229	$ (2,068)
Net change in available-for-sale investments, tax expense (benefit)	$ 161	$ 70	$ 411	$ 1,715

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 510,463	$ 153,273
Restricted cash	17,250	17,250
Short-term investments	745,609	755,224
Accounts receivable, net	110,835	105,858
Income taxes receivable	2,719	669
Spare parts and supplies, net	70,627	60,115
Prepaid expenses and other	79,403	78,551
Total	1,536,906	1,170,940
Property and equipment, less accumulated depreciation and amortization of $1,192,373 and $1,150,529 as of June 30, 2024 and December 31, 2023, respectively	2,199,989	2,013,616
Other Assets:
Assets held-for-sale	1,072	1,135
Operating lease right-of-use assets	371,519	413,237
Long-term prepayments and other	119,771	121,097
Intangible assets, net	13,500	13,500
Total Assets	4,242,757	3,733,525
Current Liabilities:
Accounts payable	200,837	199,223
Air traffic liability and current frequent flyer deferred revenue	793,010	633,345
Other accrued liabilities	172,735	175,591
Current maturities of long-term debt, less discount	131,824	43,857
Current maturities of finance lease obligations	8,883	10,053
Current maturities of operating leases	74,640	83,332
Total	1,381,929	1,145,401
Long-Term Debt	2,068,129	1,537,152
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	54,012	60,116
Noncurrent operating leases	267,103	303,119
Accumulated pension and other post-retirement benefit obligations	144,011	140,742
Other liabilities and deferred credits	83,705	77,154
Noncurrent frequent flyer deferred revenue	296,336	308,502
Deferred tax liability, net	53,024	65,914
Total	898,191	955,547
Commitments and Contingencies
Shareholders’ Equity:
Special preferred stock, $0.01 par value per share, three shares issued and outstanding as of June 30, 2024 and December 31, 2023	0	0
Common stock, $0.01 par value per share, 52,007,495 and 51,824,362 shares issued and outstanding as of June 30, 2024 and December 31, 2023, respectively	520	518
Capital in excess of par value	296,077	293,797
Accumulated loss	(324,897)	(119,738)
Accumulated other comprehensive loss, net	(77,192)	(79,152)
Total	(105,492)	95,425
Total Liabilities and Shareholders’ Equity	$ 4,242,757	$ 3,733,525

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation and amortization	$ 1,192,373	$ 1,150,529
Special preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Special preferred stock, shares issued (in shares)	3	3
Special preferred stock, shares outstanding (in shares)	3	3
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	52,007,495	51,824,362
Common stock, shares outstanding (in shares)	52,007,495	51,824,362

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock		Special Preferred Stock		Capital In Excess of Par Value	Accumulated Income (Loss)	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2022	$ 333,265	$ 514	[1]	$ 0	[2]	$ 287,161	$ 140,756	$ (95,166)
Increase (Decrease) in Stockholders' Equity
Net Loss	(98,257)						(98,257)
Other comprehensive income (loss), net	(2,052)							(2,052)
Issuance of shares of common stock, net of shares withheld for taxes	(1,066)	1	[1]			(1,067)
Share-based compensation expense	1,430					1,430
Ending balance at Mar. 31, 2023	233,320	515	[1]	0	[2]	287,524	42,499	(97,218)
Beginning balance at Dec. 31, 2022	333,265	514	[1]	0	[2]	287,161	140,756	(95,166)
Increase (Decrease) in Stockholders' Equity
Net Loss	(110,592)
Other comprehensive income (loss), net	(1,525)
Ending balance at Jun. 30, 2023	223,817	516	[1]	0	[2]	289,828	30,164	(96,691)
Beginning balance at Mar. 31, 2023	233,320	515	[1]	0	[2]	287,524	42,499	(97,218)
Increase (Decrease) in Stockholders' Equity
Net Loss	(12,335)						(12,335)
Other comprehensive income (loss), net	527							527
Issuance of shares of common stock, net of shares withheld for taxes	(47)	1	[1]			(48)
Share-based compensation expense	2,352					2,352
Ending balance at Jun. 30, 2023	223,817	516	[1]	0	[2]	289,828	30,164	(96,691)
Beginning balance at Dec. 31, 2023	95,425	518	[3]	0	[4]	293,797	(119,738)	(79,152)
Increase (Decrease) in Stockholders' Equity
Net Loss	(137,565)						(137,565)
Other comprehensive income (loss), net	1,117							1,117
Issuance of shares of common stock, net of shares withheld for taxes	(200)	0	[3]			(200)
Amazon warrant vesting	131					131
Share-based compensation expense	871					871
Ending balance at Mar. 31, 2024	(40,221)	518	[3]	0	[4]	294,599	(257,303)	(78,035)
Beginning balance at Dec. 31, 2023	95,425	518	[3]	0	[4]	293,797	(119,738)	(79,152)
Increase (Decrease) in Stockholders' Equity
Net Loss	(205,159)
Other comprehensive income (loss), net	1,960
Ending balance at Jun. 30, 2024	(105,492)	520	[3]	0	[4]	296,077	(324,897)	(77,192)
Beginning balance at Mar. 31, 2024	(40,221)	518	[3]	0	[4]	294,599	(257,303)	(78,035)
Increase (Decrease) in Stockholders' Equity
Net Loss	(67,594)						(67,594)
Other comprehensive income (loss), net	843							843
Issuance of shares of common stock, net of shares withheld for taxes	(28)	2	[3]			(30)
Amazon warrant vesting	324					324
Share-based compensation expense	1,184					1,184
Ending balance at Jun. 30, 2024	$ (105,492)	$ 520	[3]	$ 0	[4]	$ 296,077	$ (324,897)	$ (77,192)
[1]Common Stock—$0.01 par value; 118,000,000 authorized as of June 30, 2023 and December 31, 2022.[2]Special Preferred Stock—$0.01 par value; 2,000,000 shares authorized as of June 30, 2023 and December 31, 2022.[3]Common Stock—$0.01 par value; 118,000,000 authorized as of June 30, 2024 and December 31, 2023.[4]Special Preferred Stock—$0.01 par value; 2,000,000 shares authorized as of June 30, 2024 and December 31, 2023.

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Issuance of common stock related to stock awards (in shares)	158,879	24,254	82,632	131,858
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	118,000,000		118,000,000		118,000,000	118,000,000
Special preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01		$ 0.01	$ 0.01
Special preferred stock, shares authorized (in shares)	2,000,000		2,000,000		2,000,000	2,000,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Statement of Cash Flows [Abstract]
Net cash (used in) provided by Operating Activities	$ (26,868)	$ 111,662
Cash flows from Investing Activities:
Additions to property and equipment, including pre-delivery payments	(256,980)	(169,354)
Proceeds from the disposition of aircraft and aircraft related equipment	130	19,863
Purchases of investments	(232,113)	(202,037)
Proceeds from sales and maturities of investments	247,537	275,312
Net cash used in investing activities	(241,426)	(76,216)
Cash flows from Financing Activities:
Long-term borrowings	663,900	0
Repayments of long-term debt and finance lease obligations	(28,258)	(36,142)
Debt issuance costs and discounts	(9,928)	0
Payment for taxes withheld for stock compensation	(230)	(1,113)
Net cash provided by (used in) financing activities	625,484	(37,255)
Net increase (decrease) in cash and cash equivalents	357,190	(1,809)
Cash, cash equivalents, and restricted cash - Beginning of Period	170,523	246,620
Cash, cash equivalents, and restricted cash - End of Period	527,713	244,811
Non-Cash Transactions:
Right-of-use assets acquired under operating leases	$ 900	$ 7,108

General

General	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Business and Basis of Presentation Hawaiian Holdings, Inc. (Holdings) and its direct wholly owned subsidiary, Hawaiian Airlines, Inc. (Hawaiian), are incorporated in the State of Delaware. Holdings’ primary asset is its sole ownership of all issued and outstanding shares of common stock of Hawaiian. References to the "Company", "we", "us", and "our" in these Notes to Consolidated Financial Statements include both Holdings and Hawaiian unless the context requires otherwise. The accompanying unaudited financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the U.S. Securities and Exchange Commission (SEC). Accordingly, these interim financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying financial statements contain all adjustments, including normal recurring adjustments, necessary for the fair presentation of the Company’s results of operations and financial position for the periods presented. Due to seasonal variations in the demand for air travel, among other factors common to the airline industry, the results of operations for the periods presented are not necessarily indicative of the results of operations for the entire year. The accompanying unaudited Consolidated Financial Statements should be read in conjunction with the financial statements and the notes of the Company included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023. Unless otherwise noted, all amounts disclosed are stated before consideration of income taxes.

Merger Agreement with Alaska Ai

Merger Agreement with Alaska Air Group	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Merger Agreement with Alaska Air Group	Merger Agreement with Alaska Air Group On December 2, 2023, the Company entered into an Agreement and Plan of Merger (the Merger Agreement) with Alaska Air Group, Inc., a Delaware corporation (Alaska), and Marlin Acquisition Corp., a Delaware corporation and a wholly owned subsidiary of Alaska (Merger Sub), pursuant to which, subject to satisfaction or waiver of conditions therein, Merger Sub will merge with and into the Company (the Merger), with the Company surviving as a wholly owned subsidiary of Alaska. At the effective time of the Merger (the Effective Time), each share of the Company's common stock, Series B Special Preferred Stock, Series C Special Preferred Stock, and Series D Special Preferred Stock issued and outstanding immediately prior to the Effective Time, subject to certain customary exceptions specified in the Merger Agreement, will be converted into the right to receive $18.00 per share, payable to the holder in cash, without interest. Completion of the Merger is subject to customary closing conditions, including approval by the Company's stockholders, which was obtained on February 16, 2024; performance by the parties in all material respects of all their obligations under the Merger Agreement; the receipt of required regulatory approvals; and the absence of an order or law preventing, materially restraining, or materially impairing the consummation of the Merger. On February 7, 2024, the Company and Alaska each received a request for additional information and documentary material (together, the Second Request) from the Antitrust Division of the Department of Justice (the DOJ) in connection with the DOJ’s review of the Merger. On March 27, 2024, the Company and Alaska entered into a timing agreement with the DOJ pursuant to which we agreed, among other things, not to consummate the Merger before 90 days following the date on which both parties have certified substantial compliance with the Second Request (May 7, 2024) unless we have received written notice from the DOJ prior to the end of such 90-day period (which was previously scheduled to expire on August 5, 2024) that the DOJ has closed its investigation of the Merger. On July 29, 2024, the Company and Alaska agreed with the DOJ to extend the review period until 12:01 a.m., Eastern Time, on August 15, 2024. The Merger Agreement includes customary termination rights in favor of each party. In certain circumstances, the Company may be required to pay Alaska a termination fee of $39.6 million in connection with the termination of the Merger Agreement. The Merger is expected to close within 12 to 18 months of the date of the Merger Agreement.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2024
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Reclassifications out of accumulated other comprehensive income (loss) by component are as follows: Details about accumulated other comprehensive income (loss) components Three months ended June 30, Six months ended June 30, Affected line items in the consolidated statements of operations where net income is presented 2024 2023 2024 2023 (in thousands) Amortization of defined benefit plan items Actuarial loss $ 290 $ 537 $ 580 $ 987 Nonoperating income (expense), other, net Prior service cost 173 186 346 331 Nonoperating income (expense), other, net Total before tax 463 723 926 1,318 Tax benefit (115) (167) (229) (314) Total, net of tax $ 348 $ 556 $ 697 $ 1,004 Short-term investments Realized gain on sales of investments $ (46) $ (679) $ (125) $ (1,072) Gains (losses) on investments, net Realized loss on sales of investments 147 2,257 177 3,168 Gains (losses) on investments, net Total before tax 101 1,578 52 2,096 Income tax benefit (25) (657) (13) (529) Total, net of tax $ 76 $ 921 $ 39 $ 1,567 Total reclassifications for the period $ 424 $ 1,477 $ 736 $ 2,571 A roll-forward of the amounts included in accumulated other comprehensive income (loss), net of taxes, for the three and six months ended June 30, 2024 and 2023 is as follows: Three months ended June 30, 2024 Defined Benefit Short-Term Investments Total (in thousands) Beginning balance $ (60,327) $ (17,708) $ (78,035) Other comprehensive income before reclassifications, net of tax — 419 419 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 348 76 424 Net current-period other comprehensive income 348 495 843 Ending balance $ (59,979) $ (17,213) $ (77,192) Three months ended June 30, 2023 Defined Benefit Plan Items Short-Term Investments Total (in thousands) Beginning balance $ (66,517) $ (30,701) $ (97,218) Other comprehensive loss before reclassifications, net of tax (81) (869) (950) Amounts reclassified from accumulated other comprehensive income (loss), net of tax 556 921 1,477 Net current-period other comprehensive income 475 52 527 Ending balance $ (66,042) $ (30,649) $ (96,691) Six months ended June 30, 2024 Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ (60,677) $ (18,475) $ (79,152) Other comprehensive income before reclassifications, net of tax 1 1,223 1,224 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 697 39 736 Net current-period other comprehensive income 698 1,262 1,960 Ending balance $ (59,979) $ (17,213) $ (77,192) Six months ended June 30, 2023 Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ (59,439) $ (35,727) $ (95,166) Other comprehensive income (loss) before reclassifications, net of tax (7,607) 3,511 (4,096) Amounts reclassified from accumulated other comprehensive income (loss), net of tax 1,004 1,567 2,571 Net current-period other comprehensive income (loss) (6,603) 5,078 (1,525) Ending balance $ (66,042) $ (30,649) $ (96,691)

Loss Per Share

Loss Per Share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Loss Per Share	Loss Per Share Basic loss per share, which excludes dilution, is computed by dividing net loss available to common shareholders by the weighted average number of common shares outstanding for the period. The potentially dilutive shares that were excluded from the computation of diluted weighted average common stock shares outstanding because their effect would have been antidilutive was 568,317 and 46,344 for the three months ended June 30, 2024 and 2023, respectively, and 637,158 and 71,081 for the six months ended June 30, 2024 and 2023, respectively . Certain warrant shares held by Amazon have not been included in the computation as their performance condition has not yet been satisfied. As of June 30, 2024 and 2023, the unvested Amazon warrant shares excluded from antidilutive shares were 8,142,534 and 8,183,451, respectively. Refer to Note 11 to the Notes to Consolidated Financial Statements for additional discussion. The following table shows the computation of basic and diluted loss per share: Three Months Ended June 30, Six months ended June 30, 2024 2023 2024 2023 (in thousands, except for per share data) Numerator: Net Loss $ (67,594) $ (12,335) $ (205,159) $ (110,592) Denominator: Weighted average common stock shares outstanding - Basic 51,932 51,587 51,885 51,547 Weighted average common stock shares outstanding - Diluted 51,932 51,587 51,885 51,547 Net Loss Per Share Basic $ (1.30) $ (0.24) $ (3.95) $ (2.15) Diluted $ (1.30) $ (0.24) $ (3.95) $ (2.15)

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The majority of the Company's passenger revenue is derived from passenger ticket sales. Other revenue is primarily derived from the Company's cargo operations and loyalty program. The Company's primary operations are that of its wholly owned subsidiary, Hawaiian. Principally all operations of Hawaiian either originate and/or end in the state of Hawai'i. The management of such operations is based on a system-wide approach due to the interdependence of Hawaiian's route structure in its various markets. As Hawaiian offers only one significant line of business (i.e., air transportation), management has concluded that it has only one segment. The Company's operating revenues by geographic region (as defined by the U.S. Department of Transportation (DOT)) are summarized below: Three Months Ended June 30, Six months ended June 30, 2024 2023 2024 2023 Geographic Information (in thousands) Domestic $ 591,023 $ 564,684 $ 1,083,433 $ 1,050,813 Pacific 140,882 142,244 294,039 268,718 Total operating revenue $ 731,905 $ 706,928 $ 1,377,472 $ 1,319,531 Hawaiian attributes operating revenue by geographic region based on the destination of each flight segment. Hawaiian's tangible assets consist primarily of flight equipment, which is mobile across geographic markets, and therefore has not been allocated to specific geographic regions. Other operating revenue consists of cargo revenue, commissions, and fees earned under certain joint marketing agreements with other companies. These amounts are recognized when the service is provided. Three Months Ended June 30, Six months ended June 30, 2024 2023 2024 2023 Passenger Revenue by Type (in thousands) Passenger revenue, excluding frequent flyer $ 614,666 $ 597,558 $ 1,154,288 $ 1,103,520 Frequent flyer revenue, transportation component 51,363 47,434 95,189 89,998 Passenger Revenue $ 666,029 $ 644,992 $ 1,249,477 $ 1,193,518 Other revenue (e.g., cargo and other miscellaneous) $ 36,635 $ 29,863 $ 70,182 $ 65,001 Frequent flyer revenue, marketing and brand component 29,241 32,073 57,813 61,012 Other Revenue $ 65,876 $ 61,936 $ 127,995 $ 126,013 As of June 30, 2024 and December 31, 2023, the Company's air traffic liability balance, as it relates to passenger tickets (excluding frequent flyer liability), was $567.7 million and $423.1 million, respectively, which generally represents revenue that is expected to be realized in future periods. During the three months ended June 30, 2024 and 2023, the amount of passenger ticket revenue recognized that was included in Air traffic liability as of the beginning of the respective period was $306.4 million and $398.4 million, respectively. During the six months ended June 30, 2024 and 2023, the amount of passenger ticket revenue recognized that was included in air traffic liability as of the beginning of the respective period was $329.2 million and $412.2 million, respectively. Non-refundable tickets sold and credits issued generally expire 13 months from the date of issuance or scheduled flight, as applicable. The Company records an estimate of breakage revenue on the scheduled flight date for tickets that will expire unused. These estimates are based on the evaluation of actual historical results, available market information, and forecasted trends, including weather or other events impacting customer travel. During the three months ended June 30, 2024 and 2023, the Company recognized advanced breakage of $15.5 million and $17.2 million, respectively. During the six months ended June 30, 2024 and 2023, the Company recognized advanced breakage of $32.9 million and $29.7 million, respectively. The Company will continue to monitor customers' travel behavior and may adjust its estimates in the future. Frequent Flyer Accounting The Company's frequent flyer liability is recorded in Air traffic liability (short-term) and Noncurrent frequent flyer deferred revenue on its unaudited Consolidated Balance Sheets. The table below presents the Company's frequent flyer liability balance: June 30, 2024 December 31, 2023 (in thousands) Air traffic liability (current portion of frequent flyer revenue) $ 219,030 $ 201,418 Noncurrent frequent flyer deferred revenue 296,336 308,502 Total frequent flyer liability $ 515,366 $ 509,920 The table below presents a roll forward of Frequent flyer deferred revenue for the six months ended June 30, 2024 and 2023: 2024 2023 (in thousands) Total frequent flyer liability - beginning balance $ 509,920 $ 484,580 Miles awarded 103,359 107,947 Travel miles redeemed (Passenger Revenue) (95,189) (89,998) Non-travel miles redeemed (Other Revenue) (2,724) (2,454) Total frequent flyer liability - ending balance $ 515,366 $ 500,075

Short-Term Investments

Short-Term Investments	6 Months Ended
	Jun. 30, 2024
Short-Term Investments [Abstract]
Short-Term Investments	Short-Term Investments The following is a summary of short-term investments held as of June 30, 2024 and December 31, 2023: June 30, 2024 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Debt securities Corporate debt securities $ 206,872 $ 175 $ (12,324) $ 194,723 U.S. government and agency securities 270,485 84 (4,268) 266,301 Other fixed income securities 136,355 28 (4,996) 131,387 Asset-backed securities 34,334 83 (1,147) 33,270 Collateralized loan obligations 35,340 41 (371) 35,010 Bank notes 8,625 51 (170) 8,506 Total debt securities 692,011 462 (23,276) 669,197 Derivatives 320 1,113 (95) 1,338 Equity securities 80,914 — (7,055) 73,859 Other investments measured at net asset value 1,000 215 — 1,215 Total short-term investments $ 774,245 $ 1,790 $ (30,426) $ 745,609 December 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Debt securities Corporate debt securities $ 217,777 $ 440 $ (10,717) $ 207,500 U.S. government and agency securities 305,169 168 (4,908) 300,429 Other fixed income securities 35,319 42 (6,847) 28,514 Asset-backed securities 24,298 69 (1,281) 23,086 Collateralized loan obligations 39,628 83 (1,335) 38,376 Bank notes 9,118 — (204) 8,914 Total debt securities 631,309 802 (25,292) 606,819 Derivatives 233 1,026 (745) 514 Equity securities 161,677 — (14,866) 146,811 Other investments measured at net asset value 1,000 80 — 1,080 Total short-term investments $ 794,219 $ 1,908 $ (40,903) $ 755,224 The following tables present fair values and gross unrealized losses by security type and length of time that individual debt securities have been in a continuous unrealized loss position: Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses June 30, 2024 (in thousands) Debt securities Corporate debt securities $ 33,887 $ (238) $ 132,944 $ (12,086) $ 166,831 $ (12,324) U.S. government and agency securities 52,530 (68) 187,059 (4,200) 239,589 (4,268) Other fixed income securities 1,813 (17) 24,153 (4,979) 25,966 (4,996) Asset-backed securities 5,579 (39) 13,188 (1,108) 18,767 (1,147) Collateralized loan obligations 4,042 (30) 8,441 (341) 12,483 (371) Bank notes 4,047 (55) 1,484 (115) 5,531 (170) $ 101,898 $ (447) $ 367,269 $ (22,829) $ 469,167 $ (23,276) Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2023 (in thousands) Debt securities Corporate debt securities $ 9,784 $ (233) $ 154,607 $ (10,484) $ 164,391 $ (10,717) U.S. government and agency securities 82,930 (608) 193,400 (4,300) 276,330 (4,908) Other fixed income securities 1,867 (26) 21,933 (6,821) 23,800 (6,847) Asset-backed securities 2,225 (17) 14,881 (1,264) 17,106 (1,281) Collateralized loan obligations 5,032 (63) 29,445 (1,272) 34,477 (1,335) Bank notes 8,396 (164) 519 (40) 8,915 (204) $ 110,234 $ (1,111) $ 414,785 $ (24,181) $ 525,019 $ (25,292) As of June 30, 2024 and December 31, 2023, the Company's unrealized losses from debt securities were generated from 425 positions out of 567 positions and 394 positions out of 502 positions, respectively. The Company reviews debt securities quarterly for credit losses and impairment. If the cost of an investment exceeds its fair value, the Company will evaluate, among other factors, general market conditions, credit quality of debt instrument issuers, and the extent to which the fair value is less than cost. This determination requires significant judgment. In making this judgment, the Company employs a systematic methodology that considers available quantitative and qualitative evidence in evaluating potential impairment of its investments. In addition, the Company considers specific adverse conditions related to the financial health of, and business outlook for, the investee. If the Company has plans to sell the security or it is more likely than not that the Company will be required to sell the security before recovery, then a decline in fair value below cost is recorded as an impairment charge in Other, net, within non-operating expense on the unaudited consolidated statements of operations, and a new cost basis in the investment is established. If market, industry, and/or investee conditions deteriorate, the Company may incur future impairments. Debt securities in a continuous unrealized loss position for twelve months or greater as of June 30, 2024 and December 31, 2023 were primarily attributable to changes in interest rates, relative to when the investment securities were purchased. The Company does not intend to sell any of these investments and it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis, which may be at maturity. Accordingly, the Company has determined that the unrealized losses on its debt securities as of June 30, 2024 were temporary in nature. The Company has evaluated these debt securities and did not recognize any significant credit losses as of June 30, 2024 and December 31, 2023. For the three months ended June 30, 2024 and 2023, unrealized gain on equity securities of $3.4 million and unrealized loss on equity securities of $1.5 million, respectively, was recorded in Losses on investment, net, in Nonoperating income (expense). For the six months ended June 30, 2024 and 2023 , unrealized gain on equity securities of $8.5 million and unrealized loss on equity securities of $0.5 million, respectively, was recorded in Losses on investment, net, in Nonoperating income (expense). Contractual maturities of debt securities as of June 30, 2024 are shown below: Under 1 Year 1 to 5 Years Over 5 Years Total (in thousands) Debt Securities Corporate debt $ 1,572 $ 110,831 $ 82,320 $ 194,723 U.S. government and agency debt 40,646 214,108 11,547 266,301 Other fixed income securities 103,106 13,993 14,288 131,387 Asset-backed securities 1,330 14,257 17,683 33,270 Collateralized loan obligations — 150 34,860 35,010 Bank notes — 4,448 4,058 8,506 Total debt securities $ 146,654 $ 357,787 $ 164,756 $ 669,197 The Company classifies its investments as current assets as these securities are available for use in its current operation.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Accounting Standards Codification (ASC) Topic 820, Fair Value Measurement (ASC 820), defines fair value as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1 — Observable inputs such as quoted prices in active markets for identical assets or liabilities; Level 2 — Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term for the assets or liabilities; and Level 3 — Unobservable inputs for which there is little or no market data and that are significant to the fair value of the assets or liabilities. The tables below present the Company’s financial assets and liabilities measured at fair value on a recurring basis: Fair Value Measurements as of June 30, 2024 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 348,818 $ 344,273 $ 4,545 $ — Restricted cash 17,250 17,250 — — Short-term investments Debt securities Corporate debt securities 194,723 — 190,172 4,551 U.S. government and agency securities 266,301 — 266,301 — Other fixed income securities 131,387 — 131,387 — Asset-backed securities 33,270 — 25,516 7,754 Collateralized loan obligations 35,010 — 34,394 616 Bank notes 8,506 — 1,710 6,796 Total debt securities 669,197 — 649,480 19,717 Derivatives 1,338 — 1,338 — Equity securities 73,859 72,920 939 — Other investments measured at net asset value 1,215 — — — Total short-term investments 745,609 72,920 651,757 19,717 Other Assets Fuel derivative contracts 2,495 — 2,495 — Assets held-for-sale 1,072 — — 1,072 Total assets measured at fair value $ 1,115,244 $ 434,443 $ 658,797 $ 20,789 Fair Value Measurements as of December 31, 2023 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 99,965 $ 99,279 $ 686 $ — Restricted cash 17,250 17,250 — — Short-term investments Debt securities Corporate debt securities 207,500 — 202,873 4,627 U.S. government and agency securities 300,429 — 300,429 — Other fixed income securities 28,514 — 28,514 — Asset-backed securities 23,086 — 15,172 7,914 Collateralized loan obligations 38,376 — 38,123 253 Bank notes 8,914 — 2,046 6,868 Total debt securities 606,819 — 587,157 19,662 Derivatives 514 — 514 — Equity securities 146,811 146,031 780 — Other investments measured at net asset value 1,080 — — — Total short-term investments 755,224 146,031 588,451 19,662 Other Assets Fuel derivative contracts 2,069 — 2,069 — Assets held-for-sale 1,135 — — 1,135 Total assets measured at fair value $ 875,643 $ 262,560 $ 591,206 $ 20,797 Cash equivalents and restricted cash. The Company's Level 1 cash equivalents consist of money market securities and mutual funds, which are valued based on quoted prices in an active market. The carrying amounts approximate fair value because of the short-term maturity of these assets. Level 2 cash equivalents consist primarily of debt securities with original maturity dates less than 90 days. The fair value of these instruments is based on a market approach using prices generated by market transactions involving similar assets. Restricted cash includes funds held in a controlled account to be used for debt service payments associated with the Company's loyalty and intellectual brand offering. As of June 30, 2024, approximately $17.3 million was held in the controlled account designated for debt servicing and was classified as restricted cash on the Company's Consolidated Balance Sheets. Short-term investments. The Company's Level 1 short-term investments consist of equity mutual funds, which are valued based on a market approach using prices generated by market transactions involving identical assets. Level 2 short-term investments consist of corporate debt securities, U.S. government and agency securities, other fixed income securities, asset-backed securities, collateralized loan obligations, bank notes, equity securities, and derivative instruments as further discussed in Note 8 , which are valued based on a market approach using industry standard valuation techniques that incorporate inputs such as quoted prices for similar assets, interest rates, benchmark curves, credit ratings, and other observable inputs or market data. Certain asset-backed securities, collateralized loan obligations, and private bank notes that are not readily marketable are classified as Level 3 in the fair value hierarchy and valued using certain unobservable inputs including future cash flows and discount rates. The reconciliation of the Company's short-term investments measured at fair value on a recurring basis using unobservable inputs (Level 3) for the six months ended June 30, 2024 is as follows: Short-term Investment Activity for the six months ended June 30, 2024 Asset-Backed Securities Bank Notes Collateralized Loan Obligations Corporate Debt Securities Total (in thousands) Beginning balance as of December 31, 2023 $ 7,914 $ 6,868 $ 253 $ 4,627 $ 19,662 Purchases — — 363 — 363 Sale of investments — — — (10) (10) Redemptions and paydowns (80) (136) — — (216) Amortization and accretion, net 30 (1) — (2) 27 Realized and unrealized gains (losses), net (110) 65 — (64) (109) Ending balance as of June 30, 2024 $ 7,754 $ 6,796 $ 616 $ 4,551 $ 19,717 Short-term Investment Activity for the six months ended June 30, 2023 Asset-Backed Securities Bank Notes Collateralized Loan Obligations Corporate Debt Securities Total (in thousands) Beginning balance as of December 31, 2022 $ 9,033 $ 9,426 $ 2,558 $ 8,173 $ 29,190 Purchases — 944 — — 944 Sale of investments — (2,189) — — (2,189) Redemptions and paydowns (49) (341) — (12) (402) Amortization and accretion, net 32 2 — 3 37 Realized and unrealized gains (losses), net (146) 65 (130) (21) (232) Ending balance as of June 30, 2023 $ 8,870 $ 7,907 $ 2,428 $ 8,143 $ 27,348 Other investments at net asset value (NAV) . In accordance with relevant accounting standards, certain investments that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in the table above are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. The investments measured using NAV are investments in a partnership for which a secondary market does not exist. Investments in the partnership are carried at estimated NAV as determined by and reported by the general partners of the partnerships and represent the proportionate share of the estimated fair value of the underlying assets of the limited partnerships. The Company can redeem its shares upon approval by the respective partnerships' managing member. Fuel derivative contracts. The Company uses derivatives to manage risks associated with certain assets and liabilities arising from the potential adverse impact of fluctuations in global fuel prices. The Company’s operations are inherently dependent upon the price and availability of aircraft fuel. To manage economic risks associated with fluctuations in aircraft fuel prices, the Company periodically enters into derivative financial instruments. Any changes in fair value of these derivative instruments are adjusted through other Nonoperating income (expense) in the period of change. The Company’s fuel derivative contracts consist of crude oil call options, which are not traded on a public exchange. The fair value of these instruments is determined based on inputs available or derived from public markets including contractual terms, market prices, yield curves, and measures of volatility among others. Assets held for sale. The Company's assets held for sale consist of aircraft, engine, rotable and expendable aircraft parts. The assets are measured at the lower of the carrying amount or fair value less cost to sell and a loss is recognized for any initial adjustment of the assets' carrying amount to fair value less cost to sell. The fair value measurements for the Company's held-for-sale assets were based on Level 3 inputs, which include information obtained from third-party valuation sources and other market sources, including recent offers from potential buyers. Refer to Note 13 to the Notes to Consolidated Financial Statements for additional discussion. The table below presents the Company’s debt measured at fair value: Fair Value of Debt June 30, 2024 December 31, 2023 Carrying Fair Value Carrying Fair Value Amount Total Level 1 Level 2 Level 3 Amount Total Level 1 Level 2 Level 3 (in thousands) $ 2,199,953 $ 2,068,918 $ — $ — $ 2,068,918 $ 1,581,009 $ 1,406,721 $ — $ — $ 1,406,721 The fair value estimates of the Company’s debt were based on the discounted amount of future cash flows using the Company’s current incremental rate of borrowing based on quotes of similar debt for other similarly rated companies. The carrying amounts of cash, other receivables, and accounts payable approximate fair value due to the short-term nature of these financial instruments.

Financial Derivative Instrument

Financial Derivative Instruments	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivative Instruments	Financial Derivative Instruments The Company uses derivatives to manage risks associated with certain assets and liabilities arising from the potential adverse impact of fluctuations in global fuel prices. Fuel Risk Management The Company's operations are inherently dependent upon the price and availability of aircraft fuel. To manage economic risks associated with fluctuations in aircraft fuel prices, the Company periodically enters into derivative financial instruments. The Company uses a combination of derivative contracts to hedge its aircraft fuel expense. The following table reflects the amount of realized and unrealized gains and losses recorded as Nonoperating income (expense) in the Consolidated Statements of Operations. Three months ended June 30, Six months ended June 30, Fuel derivative contracts 2024 2023 2024 2023 (in thousands) Losses realized at settlement $ (1,954) $ (2,795) $ (4,352) $ (4,308) Reversal of prior period unrealized amounts 2,520 6,192 4,335 2,639 Unrealized losses that will settle in future periods (2,429) (7,055) (2,428) (7,055) Losses on fuel derivatives recorded as Nonoperating Expense $ (1,863) $ (3,658) $ (2,445) $ (8,724) Investment Portfolio Management The Company's investment managers use a combination of derivative instruments (swaps, futures, options and forward contracts) to manage risk associated with its investment portfolio, including the volatility in interest rates and currency exchange rates on foreign denominated debt securities. As of June 30, 2024 and December 31, 2023, the Company's derivative positions reflected a net asset position of $1.3 million and $0.5 million, respectively, within the portfolio. During the three months ended June 30, 2024 and 2023, the Company recognized a net realized and unrealized gain of $0.2 million and a net realized and unrealized loss of $1.0 million, respectively, through Nonoperating income (expense). During the six months ended June 30, 2024 and 2023, the Company recognized a net realized and unrealized gain of $0.8 million and a net realized and unrealized loss of $1.0 million, respectively, through Nonoperating income (expense). The following table presents the gross fair value of asset and liability derivatives, all of which are not designated as hedging instruments under ASC 815, as well as the net derivative positions and location of the asset and liability balances within the Consolidated Balance Sheets. Derivative positions as of June 30, 2024 Balance Sheet Notional Amount Final Gross Fair Gross Fair Net Derivative Position (in thousands) (in thousands) Derivatives not designated as hedges Fuel derivative contracts Prepaid expenses and other 95,802 gallons June 2025 $ 2,495 $ — $ 2,495 Foreign currency derivatives Short-term investments 37,627 Euro March 2025 $ 1,023 $ (22) $ 1,001 Interest rate contracts Short-term investments 52,867 US Dollars May 2028 $ 433 $ (96) $ 337 Derivative positions as of December 31, 2023 Balance Sheet Notional Amount Final Gross Fair Gross Fair Net Derivative Position (in thousands) (in thousands) Derivatives not designated as hedges Fuel derivative contracts Prepaid expenses and other 90,258 gallons December 2024 $ 2,069 $ — $ 2,069 Foreign currency derivatives Short-term investments 38,385 Euro March 2025 $ 543 $ (569) $ (26) Interest rate contracts Short-term investments 16,110 US Dollars May 2028 $ 797 $ (257) $ 540 Risk and Collateral The financial derivative instruments expose the Company to possible credit loss in the event the counterparties to the agreements fail to meet their obligations. To manage such credit risks, the Company (1) selects its counterparties based on past experience and credit ratings, (2) limits its exposure to any single counterparty, and (3) periodically monitors the market position and credit rating of each counterparty. Credit risk is deemed to have a minimal impact on the fair value of the derivative instruments as cash collateral would be provided to or by the counterparties based on the current market exposure of the derivative. The Company's agreements with its counterparties also require the posting of cash collateral in the event the aggregate value of the Company's positions exceeds certain exposure thresholds. The aggregate fair value of the Company's derivative instruments that contain credit-risk related contingent features was in a net asset position of $3.8 million and $2.6 million as of June 30, 2024 and December 31, 2023, respectively. ASC 815 requires a reporting entity to elect a policy of whether to offset rights to reclaim cash collateral or obligations to return cash collateral against derivative assets and liabilities executed with the same counterparty under a master netting agreement, or present such amounts on a gross basis. The Company's accounting policy is to present its derivative assets and liabilities on a net basis, including any collateral posted with the counterparty. The Company had no collateral w ith its counterparties as of June 30, 2024 and December 31, 2023, respectively. The Company is also subject to market risk in the event these financial instruments become less valuable in the market. However, changes in the fair value of the derivative instruments will generally offset the change in the fair value of the hedged item, limiting the Company's overall exposure.

Debt

Debt	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Debt	Debt Long-term debt, net of unamortized discounts and issuance costs, is outlined as follows: June 30, 2024 December 31, 2023 (in thousands) Class A EETC-13, fixed interest rate of 3.9%, semiannual principal and interest payments, remaining balance due at maturity in January 2026 $ 153,067 $ 162,953 Japanese Yen denominated financing, fixed interest rate of 1.05%, quarterly principal and interest payments, remaining balance due at maturity in May 2030 15,456 19,050 Japanese Yen denominated financing, fixed interest rate of 1.01%, semiannual principal and interest payments, remaining balance due at maturity in June 2030 13,267 16,394 Japanese Yen denominated financing, fixed interest rate of 0.65%, quarterly principal and interest payments, remaining balance due at maturity in March 2025 33,096 45,107 Japanese Yen denominated financing, fixed interest rate of 0.76%, semiannual principal and interest payments, remaining balance due at maturity in September 2031 38,065 46,225 CARES Act Payroll Support Program, fixed interest rate of 1.0% for the first through fifth years and variable interest of SOFR plus a margin of 2.0% for the sixth year through maturity, semiannual interest payments, principal balance due at maturity in April 2030 through September 2030 60,278 60,278 Payroll Support Program Extension, fixed interest rate of 1.0% for the first through fifth years and variable interest of SOFR plus a margin of 2.0% for the sixth year through maturity, semiannual interest payments, principal balance due at maturity in March 2031 through April 2031 27,797 27,797 Payroll Support Program 3, fixed interest rate of 1.0% for the first through fifth years and variable interest of SOFR plus a margin of 2.0% for the sixth year through maturity, semiannual interest payments, principal balance due at maturity in April 2031 through June 2031 23,908 23,908 Financing Lease, variable interest rate of SOFR plus a margin of 3.85%, quarterly principal and interest payments, remaining balance due at maturity in January 2034 129,175 — Boeing 787-9 Aircraft Facility Agreement consisting of (a) $115.0 million Senior note with a variable rate of SOFR + 3.5% maturing in April 2034, and (b) $15.0 million Junior note with a fixed interest rate of 10.4934%, maturing in April 2029 130,000 — Airbus A321neo Aircraft Facility Agreements, collateralized by 10 aircraft, maturity in June 2032. Five loans include variable rates based on SOFR plus a margin of 3.20% and the other five loans have a fixed interest rate ranging between 7.25% and 7.50%, quarterly principal and interest payments. 402,500 — Loyalty Program Financing, fixed interest of 5.75%, quarterly interest payments, principal balance due at maturity in January 2026 1,200,000 1,200,000 Unamortized debt discount and issuance costs (26,656) (20,703) Total Debt $ 2,199,953 $ 1,581,009 Less: Current maturities of long-term debt (131,824) (43,857) Long-Term Debt, less discount $ 2,068,129 $ 1,537,152 Revolving Credit Facility In August 2022, the Company entered into an Amended and Restated Credit and Guarantee Agreement (the Revolving Credit Facility). The Revolving Credit Facility has an aggregate principal amount not to exceed $235.0 million and matures in December 2025. The Company may, from time to time, grant liens on certain eligible account receivables, aircraft, spare engines, ground support equipment and route authorities, as well as cash and certain cash equivalents, in order to secure its outstanding obligations under the Revolving Credit Facility. Indebtedness under the Revolving Credit Facility will bear interest, at a per annum rate based on, at the Company's option: (1) a variable rate equal to the Secured overnight financing rate (as defined in the Revolving Credit Facility) plus a margin of 3.0%; or (2) Alternate base rate (as defined in the Revolving Credit Facility) plus a margin of 2.0%. The Company is also subject to compliance and liquidity covenants under the Revolving Credit Facility. As of June 30, 2024, the Company had no outstanding borrowing under the Revolving Credit Facility. Boeing 787-9 Aircraft Financing In February 2024, the Company entered into a Finance Lease Agreement for $131.4 million, collateralized by our first delivered Boeing 787-9 aircraft. The transaction did not meet the criteria of a sale under the applicable accounting framework and therefore the Company recorded the transaction as a financing liability. The financing has a term of ten years, maturing in January 2034. The financing has a variable interest rate based on SOFR plus a margin of 3.85%, with quarterly principal and interest payments. In April 2024, the Company took delivery of its second Boeing 787-9 aircraft and entered into senior and junior loan agreements totaling $130.0 million. The $115.0 million senior loan has a term of 10 years, maturing in April 2034, and has a variable rate based on SOFR plus a margin of 3.50%. The $15.0 million junior loan has a term of 5 years, maturing in April 2029, and has a fixed interest rate of 10.4934%. Both agreements require quarterly principal and interest payments. Airbus A321neo Financing In June 2024, the Company entered into ten Aircraft Loan Agreements totaling $402.5 million, which are collateralized by 10 Airbus A321neo aircraft. Each loan has a term of 8 years, maturing in June 2032. Five loans have a variable rate based on SOFR plus a stated margin of 3.20%, with quarterly principal and interest payments. The other five loans have a fixed interest rate ranging between 7.25% and 7.50%, with quarterly principal and interest payments. Loyalty Program Financing Exchange On July 26, 2024, Hawaiian completed its private exchange offer ("Exchange Offer") for its outstanding Loyalty Program 5.750% senior secured notes due 2026 ("Existing Notes") with 11.0% senior secured notes due 2029 ("New Notes" and, together with the Existing Notes, the "Notes") and cash. In connection with the Exchange Offer, Hawaiian issued $984.8 million aggregate principal amount of New Notes. The New Notes are fully and unconditionally guaranteed, jointly and severally, by (i) Hawaiian Finance 1 Ltd., a direct wholly owned subsidiary of Hawaiian (“HoldCo 1”), (ii) Hawaiian Finance 2 Ltd., a direct subsidiary of HoldCo 1 and indirect wholly owned subsidiary of Hawaiian (“HoldCo 2” and, together with HoldCo 1, the “Cayman Guarantors”), (iii) Hawaiian and (iv) Holdings (Holdings, together with Hawaiian, the “Parent Guarantors” and the Parent Guarantors, together with the Cayman Guarantors, the “Guarantors”). The New Notes will mature on April 15, 2029. The New Notes bear interest at a rate of 11.000% per year, payable quarterly in arrears on January 20, April 20, July 20 and October 20 of each year, beginning on October 20, 2024. Schedule of Debt Maturities As of June 30, 2024, the expected maturities of debt, excluding debt issuance costs, for the remainder of 2024 and the next four years, and thereafter, were as follows (in thousands): Remaining months in 2024 $ 57,191 2025 125,947 2026 1,411,554 2027 84,902 2028 85,846 Thereafter 461,169 $ 2,226,609 Covenants The Company's debt agreements contain various affirmative, negative and financial covenants. The Company was in compliance with the covenants in these debt agreements as of June 30, 2024.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The components of net periodic benefit cost for the Company’s defined benefit and other post-retirement plans included the following: Three months ended June 30, Six months ended June 30, Components of Net Period Benefit Cost 2024 2023 2024 2023 (in thousands) Service cost $ 2,514 $ 1,791 $ 5,028 $ 3,420 Other cost: Interest cost 6,307 6,513 12,614 12,943 Expected return on plan assets (5,843) (5,529) (11,686) (11,060) Recognized net actuarial loss 463 723 926 1,318 Total other components of the net periodic benefit cost 927 1,707 1,854 3,201 Net periodic benefit cost $ 3,441 $ 3,498 $ 6,882 $ 6,621 Service costs are recorded within Wages and benefits on the unaudited Consolidated Statements of Operations. Total other components of the net periodic benefit cost are recorded within the nonoperating income (expense), other, net line item on the unaudited Consolidated Statements of Operations. During the three and six months ended June 30, 2024 and 2023, the Company was not required to, and did not make cash contributions to its defined benefit and other post-retirement plans. The Company is not required to make a cash contribution to its defined benefit plan for the remainder of 2024.

Amazon Agreement

Amazon Agreement	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Amazon Agreement	Amazon Agreement On October 20, 2022, Hawaiian and Amazon.com Services LLC (Customer), a wholly owned subsidiary of Amazon.com, Inc. (Amazon), entered into an Air Transportation Services Agreement (the ATSA) under which the Company will provide certain air cargo transportation services to Customer for an initial term of eight years. Thereafter, the Customer may elect to extend the ATSA for two years and, at the end of such period, the parties may mutually agree to extend the term for three additional years The ATSA provides for the Company to initially operate ten A330-300F aircraft for air cargo transportation services, with the Customer having the right to enter into work orders for additional aircraft. The Company will supply flight crews, perform maintenance and certain administrative functions, and procure aircraft insurance. The Customer will pay the Company a fixed monthly fee per aircraft, a per flight hour fee, and a per flight cycle fee for each flight cycle operated. The Customer will also reimburse the Company for certain operating expenses, including fuel, certain maintenance, and insurance premiums. As part of the ATSA, the Company received $11.5 million toward start-up costs which has been recorded in Other liabilities in the Consolidated Balance Sheet. The deferred up-front payment will be amortized into revenue on a pro-rata basis over the term of the contract as revenue is earned. Operations under the ATSA commenced on October 2, 2023. The Company and Amazon also entered into a Transaction Agreement, under which the Company agreed to issue to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon, a warrant (the Warrant) to acquire up to 9,442,443 shares (the Warrant Shares), of the Company's common stock, par value $0.01 per share. The exercise price with respect to the first 6,294,962 Warrant Shares that vest will be $14.71 per share (the First Tranche). The exercise price with respect to the remaining 3,147,481 Warrant Shares (the Second Tranche) will be determined based on the 30-day volume-weighted average price of the Company’s common stock as of the earlier of (i) October 20, 2025, or (ii) the date that the entire First Tranche is vested. At execution of the ATSA, 1,258,992 Warrant Shares, valued at $11.6 million, vested, and were recorded in Other assets in the Consolidated Balance Sheet. The remaining Warrant Shares will vest based on qualifying payments to be made by Amazon or its affiliates either under the ATSA or generally to the Company with respect to air cargo or air charter services (the Performance Condition), excluding commercial passenger service, up to $1.8 billion of qualifying payments in the aggregate. The Warrant was valued in two tranches, both utilizing a Monte Carlo Simulation Model. The First Tranche, which met the grant date criteria under ASC 718 at execution of the ATSA, has a set exercise price and a grant date fair value of approximately $57.9 million, or $9.19 per Warrant Share. The Warrant is classified as an equity award, subject only to the Performance Condition referenced above which impacts the timing of the vesting of the Warrant Shares. The Second Tranche, which will not have an established exercise price until a future date, as noted above, was valued at approximately $26.0 million, or $8.25 per Warrant Share as of June 30, 2024. As a grant date has not yet been established, the Company will estimate the fair value of these Warrant Shares on a quarterly basis; however, the Company also considered that until the Warrant Shares vest, there is no financial statement impact related to the Second Tranche for unvested shares under ASC 718. At their grant date, the Company will value these Warrant Shares, which will be classified as equity awards, subject to the Performance Condition. As discussed above, 1,258,992 Warrant Shares (included in the First Tranche), with a value of $11.6 million, vested at execution of the ATSA, and were recorded as Other assets on the Consolidated Balance Sheet. The $11.6 million will be recognized as contra-revenue pro rata with estimated revenue earned over the term of the ATSA. For the remaining Warrant Shares, the value of the Warrant Shares, at grant date, will be recognized as a reduction of the transaction price of the Company’s flight services performance obligation over the term of the ATSA as revenue is earned with an offsetting entry to Capital in excess of par.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities Commitments As of June 30, 2024, the Company had the following aircraft-related commitments consisting of firm aircraft and engine orders and purchase rights for additional aircraft and engines: Aircraft Type Firm Orders Purchase Rights Expected Delivery Dates A321neo aircraft — 9 N/A Boeing 787-9 aircraft 10 8 Between 2024 and 2027 General Electric GEnx spare engines: Boeing 787-9 spare engines 2 1 Between 2024 and 2027 In July 2018, the Company entered into a purchase agreement for the purchase of 10 Boeing 787-9 "Dreamliner" aircraft, including purchase rights for an additional 10 aircraft with scheduled delivery from 2021 to 2025. In October 2018, the Company entered into a definitive agreement for the selection of GEnx engines to power its Boeing 787-9 fleet. The agreement provides for the purchase of 20 GEnx engines, the right to purchase an additional 20 GEnx engines, and the purchase of up to four spare engines. In December 2022, the Company entered into a supplemental agreement to its Boeing 787-9 purchase agreement, pursuant to which (a) the Company agreed with Boeing to defer the delivery of the Boeing 787-9 aircraft and (b) agreed to exercise purchase options for an additional two Boeing 787-9 aircraft. In July 2023, the Company was notified by Boeing that its 2023 and 2024 Boeing 787-9 aircraft deliveries would be delayed by a couple of months. In February 2024, the Company took delivery of its first Boeing 787-9 aircraft under a finance lease. Refer to Note 9 of the Notes to Consolidated Finance Statements for additional discussion. This aircraft was placed into revenue service in April 2024. The Company took delivery of its second Boeing 787-9 aircraft in April 2024, which was placed into revenue service in May 2024. To finance the aircraft, the Company entered into (a) a $115.0 million senior note maturing in April 2034 with a variable interest rate based on SOFR In order to complete the purchase of these aircraft and fund related costs, the Company may need to secure acceptable financing. Financing may be necessary to satisfy the Company's capital commitments for firm order aircraft and other related capital expenditures. The Company can provide no assurance that any financing not already in place for aircraft and spare engine deliveries will be available to us on acceptable terms when necessary or at all. The Company has commitments with third-party service providers for reservations, information technology, and accounting services through 2033. Committed capital and other expenditures include escalation and variable amounts based on estimated forecasts. The gross committed expenditures and committed payments as of June 30, 2024 and for the next five fiscal years and thereafter are detailed below: Aircraft and Aircraft Related Other Total Committed (in thousands) Remaining in 2024 $ 72,992 $ 13,941 $ 86,933 2025 563,736 21,944 585,680 2026 667,219 12,265 679,484 2027 253,228 8,270 261,498 2028 — 3,311 3,311 Thereafter — 58,285 58,285 $ 1,557,175 $ 118,016 $ 1,675,191 Litigation and Contingencies The Company is subject to legal proceedings arising in the normal course of its operations. The Company does not anticipate that the disposition of any currently pending proceeding will have a material effect on the Company’s operations, business or financial condition. General Guarantees and Indemnifications In the normal course of business, the Company enters into numerous aircraft financing and real estate leasing arrangements that have various guarantees included in such contracts. It is common in such lease transactions for the lessee to agree to indemnify the lessor and other related third parties for tort liabilities that arise out of, or relate to, the lessee’s use of the leased aircraft or occupancy of the leased premises. In some cases, this indemnity extends to related liabilities arising from the negligence of the indemnified parties, but usually excludes any liabilities caused by such parties' gross negligence or willful misconduct. Additionally, the lessee typically indemnifies such parties for any environmental liability that arises out of or relates to the lessee's use of the real estate leased premises. The Company believes that it is insured (subject to deductibles) for most of the tort liabilities and related indemnities described above with respect to the aircraft and real estate that it leases. The Company cannot reasonably estimate the potential amount of future payments, if any, under the foregoing indemnities and agreements. Credit Card Holdbacks Under the Company’s bank-issued credit card processing agreements, proceeds from advance ticket sales may be held back to serve as collateral to cover any possible chargebacks or other disputed charges that may occur. As of June 30, 2024 and December 31, 2023, there were no holdbacks held with the Company's credit card processors. In the event of a material adverse change in the Company's business, the credit card processor could increase holdbacks to up to 100% of the amount of outstanding credit card tickets that are unflown (e.g., air traffic liability, excluding frequent flyer deferred revenue), which would result in a restriction of cash. If the Company were unable to obtain a waiver of, or otherwise mitigate the increase in the restriction of cash, it could have a material impact on the Company's operations, business or financial condition.

Assets Held-For-Sale

Assets Held-For-Sale	6 Months Ended
	Jun. 30, 2024
Discontinued Operations and Disposal Groups [Abstract]
Assets Held-For-Sale	Assets Held-For-Sale In 2021, the Company reclassified approximately $29.5 million in long-lived assets as held for sale as follows: • The Company announced the termination of its 'Ohana by Hawaiian operations, which utilized its ATR-42 and ATR-72 fleet, and was operated under a capacity purchase agreement (CPA) with a third-party carrier. Following the termination of the operations, management committed to a plan of sale and wrote-down the related assets by approximately $6.4 million to fair value, less cost to sell, and classified approximately $23.4 million as assets held for sale on the Consolidated Balance Sheets. • The Company sold certain commercial real-estate assets held by one of the Company's subsidiaries. Management fair valued the assets, less the cost to sell, which did not result in a write-down to the asset group, and reclassified approximately $6.3 million as assets held for sale on the Consolidated Balance Sheets. As of June 30, 2024 and December 31, 2023, assets held for sale were $1.1 million for both periods. A roll-forward of the Assets held-for-sale activity for the six months ended June 30, 2024 and 2023 is as follows: Assets Held-For-Sale Activity for the six months ended June 30, 2024 ATR Aircraft Commercial Real Estate Total (in thousands) Beginning balance as of December 31, 2023 $ 1,135 $ — $ 1,135 Additions — — — Proceeds from sale (130) — (130) Realized gains 67 — 67 Realized losses — — — Ending balance as of June 30, 2024 $ 1,072 $ — $ 1,072 Assets Held-For-Sale Activity for the six months ended June 30, 2023 ATR Aircraft Commercial Real Estate Total (in thousands) Beginning balance as of December 31, 2022 $ 7,728 $ 6,291 $ 14,019 Additions — — — Proceeds from sale (4,546) (16,470) (21,016) Realized gains 76 10,179 10,255 Realized losses (413) — (413) Ending balance as of June 30, 2023 $ 2,845 $ — $ 2,845 In February 2023, the Company entered into a sale agreement for the sale of its commercial real estate and recognized a gain on sale of $10.2 million, which was recorded in Other operating expense In October 2023, the Company completed the sale of its remaining ATR 72-200 aircraft. The Company anticipates completing the sale of remaining aircraft parts classified as held-for-sale in 2024, and will continue to monitor the asset group for potential impairment.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	6 Months Ended
	Jun. 30, 2024
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Financial Information	Condensed Consolidating Financial Information The following condensed consolidating financial information is presented in accordance with Rule 3-10 of Regulation S-X because, in connection with the issuance by pass-through trusts formed by Hawaiian (which is also referred to in this Note 14 as Subsidiary Issuer / Guarantor) of pass-through certificates, Holdings (which is also referred to in this Note 14 as Parent Issuer / Guarantor) is fully and unconditionally guaranteeing the payment obligations of Hawaiian, which is a 100% owned subsidiary of Holdings, under equipment notes issued by Hawaiian to purchase new aircraft. The Company's condensed consolidating financial statements are presented in the following tables: Condensed Consolidating Statements of Operations and Comprehensive Loss Three months ended June 30, 2024 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 731,963 $ 13,859 $ (13,917) $ 731,905 Operating Expenses: Wages and benefits — 265,024 — — 265,024 Aircraft fuel, including taxes and delivery — 179,153 — — 179,153 Maintenance, materials and repairs — 69,897 — — 69,897 Aircraft and passenger servicing — 47,854 — — 47,854 Commissions and other selling 1 29,069 77 (79) 29,068 Aircraft rent — 29,891 — — 29,891 Other rentals and landing fees — 45,011 — — 45,011 Depreciation and amortization — 35,068 — — 35,068 Purchased services 50 38,948 93 (66) 39,025 Special items — 6,497 — — 6,497 Other 1,580 52,450 546 (13,772) 40,804 Total 1,631 798,862 716 (13,917) 787,292 Operating Income (Loss) (1,631) (66,899) 13,143 — (55,387) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (66,077) (4,248) — 70,325 — Interest expense and amortization of debt discounts and issuance costs — (10,563) (18,507) 746 (28,324) Interest income 110 10,583 1,187 (746) 11,134 Capitalized interest — 2,541 — — 2,541 Losses on fuel derivatives — (1,863) — — (1,863) Other components of net periodic pension cost — (927) — — (927) Losses on investments, net — (654) — — (654) Gains on foreign debt — 6,470 — — 6,470 Other, net — (584) — — (584) Total (65,967) 755 (17,320) 70,325 (12,207) Loss Before Income Taxes (67,598) (66,144) (4,177) 70,325 (67,594) Income tax benefit — — — — — Net Loss $ (67,598) $ (66,144) $ (4,177) $ 70,325 $ (67,594) Comprehensive Loss $ (66,751) $ (65,301) $ (4,177) $ 69,478 $ (66,751) Condensed Consolidating Statements of Operations and Comprehensive Loss Three months ended June 30, 2023 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 707,032 $ 13,946 $ (14,050) $ 706,928 Operating Expenses: Wages and benefits — 237,680 — — 237,680 Aircraft fuel, including taxes and delivery — 166,380 — — 166,380 Maintenance, materials and repairs — 53,657 — — 53,657 Aircraft and passenger servicing — 43,126 — — 43,126 Commissions and other selling 9 28,407 58 (83) 28,391 Aircraft rent — 26,159 — — 26,159 Depreciation and amortization — 33,348 — — 33,348 Other rentals and landing fees — 41,487 — — 41,487 Purchased services 52 37,089 106 (66) 37,181 Other 1,798 60,126 1,076 (13,901) 49,099 Total 1,859 727,459 1,240 (14,050) 716,508 Operating Income (Loss) (1,859) (20,427) 12,706 — (9,580) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (10,620) (4,172) — 14,792 — Interest expense and amortization of debt discounts and issuance costs — (4,966) (18,487) 748 (22,705) Interest income 145 12,863 1,279 (748) 13,539 Capitalized interest — 1,945 — — 1,945 Losses on fuel derivatives — (3,658) — — (3,658) Other components of net periodic pension cost — (1,707) — — (1,707) Losses on investments, net — (3,549) — — (3,549) Gains on foreign debt — 12,174 — — 12,174 Other, net — (920) — — (920) Total (10,475) 8,010 (17,208) 14,792 (4,881) Loss Before Income Taxes (12,334) (12,417) (4,502) 14,792 (14,461) Income tax benefit — (2,126) — — (2,126) Net Loss $ (12,334) $ (10,291) $ (4,502) $ 14,792 $ (12,335) Comprehensive Loss $ (11,808) $ (9,764) $ (4,502) $ 14,266 $ (11,808) Condensed Consolidating Statements of Operations and Comprehensive Loss Six months ended June 30, 2024 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,377,554 $ 27,642 $ (27,724) $ 1,377,472 Operating Expenses: Aircraft fuel, including taxes and delivery — 367,931 — — 367,931 Wages and benefits — 526,959 — — 526,959 Aircraft rent — 59,597 — — 59,597 Maintenance materials and repairs — 140,868 — — 140,868 Aircraft and passenger servicing — 93,278 — — 93,278 Commissions and other selling 11 57,559 109 (168) 57,511 Depreciation and amortization — 68,035 — — 68,035 Other rentals and landing fees — 88,138 — — 88,138 Purchased services 170 77,275 186 (131) 77,500 Special items — 14,979 — — 14,979 Other 3,930 109,021 1,183 (27,425) 86,709 Total 4,111 1,603,640 1,478 (27,724) 1,581,505 Operating Income (Loss) (4,111) (226,086) 26,164 — (204,033) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (201,269) (8,720) — 209,989 — Interest expense and amortization of debt discounts and issuance costs — (16,877) (37,008) 1,492 (52,393) Other components of net periodic pension cost — (1,854) — — (1,854) Interest income 219 20,030 2,398 (1,492) 21,155 Capitalized interest — 5,675 — — 5,675 Losses on fuel derivatives — (2,445) — — (2,445) Loss on extinguishment of debt — — — — — Losses on investments, net — (184) — — (184) Gains on foreign debt — 14,989 — — 14,989 Other, net — (1,354) — — (1,354) Total (201,050) 9,260 (34,610) 209,989 (16,411) Loss Before Income Taxes (205,161) (216,826) (8,446) 209,989 (220,444) Income tax benefit — (15,285) — — (15,285) Net Loss $ (205,161) $ (201,541) $ (8,446) $ 209,989 $ (205,159) Comprehensive Loss $ (203,199) $ (199,581) $ (8,446) $ 208,027 $ (203,199) Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Six months ended June 30, 2023 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,318,830 $ 28,222 $ (27,521) $ 1,319,531 Operating Expenses: Aircraft fuel, including taxes and delivery — 364,005 — — 364,005 Wages and benefits — 479,613 — — 479,613 Aircraft rent — 54,330 — — 54,330 Maintenance materials and repairs — 103,974 (31) — 103,943 Aircraft and passenger servicing — 85,658 — — 85,658 Commissions and other selling 18 56,561 281 (230) 56,630 Depreciation and amortization — 66,015 — — 66,015 Other rentals and landing fees — 80,226 — (19) 80,207 Purchased services 171 71,540 674 (131) 72,254 Other 3,627 115,690 (8,292) (27,141) 83,884 Total 3,816 1,477,612 (7,368) (27,521) 1,446,539 Operating Income (Loss) (3,816) (158,782) 35,590 — (127,008) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (107,316) (9,002) — 116,318 — Interest expense and amortization of debt discounts and issuance costs — (10,114) (36,959) 1,488 (45,585) Other components of net periodic pension cost — (3,201) — — (3,201) Interest income 543 28,405 2,544 (1,488) 30,004 Capitalized interest — 3,404 — — 3,404 Loss on extinguishment of debt — — — — — Losses on fuel derivatives — (8,724) — — (8,724) Losses on investments, net — (2,852) — — (2,852) Gains on foreign debt — 14,434 — — 14,434 Other, net — (764) — — (764) Total (106,773) 11,586 (34,415) 116,318 (13,284) Income (Loss) Before Income Taxes (110,589) (147,196) 1,175 116,318 (140,292) Income tax benefit — (29,700) — — (29,700) Net Income (Loss) $ (110,589) $ (117,496) $ 1,175 $ 116,318 $ (110,592) Comprehensive Income (Loss) $ (112,117) $ (119,021) $ 1,175 $ 117,846 $ (112,117) Condensed Consolidating Balance Sheets June 30, 2024 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current Assets: Cash and cash equivalents $ 8,927 $ 470,603 $ 30,933 $ — $ 510,463 Restricted cash — — 17,250 — 17,250 Short-term investments — 745,609 — — 745,609 Accounts receivable, net — 107,739 27,849 (24,753) 110,835 Income taxes receivable 1,269 1,450 — — 2,719 Spare parts and supplies, net — 70,627 — — 70,627 Prepaid expenses and other — 79,403 — — 79,403 Total 10,196 1,475,431 76,032 (24,753) 1,536,906 Property and equipment at cost — 3,392,362 — — 3,392,362 Less accumulated depreciation and amortization — (1,192,373) — — (1,192,373) Property and equipment, net — 2,199,989 — — 2,199,989 Assets held-for-sale — 224 848 — 1,072 Operating lease right-of-use assets — 371,519 — — 371,519 Long-term prepayments and other — 119,771 1,200,000 (1,200,000) 119,771 Goodwill and other intangible assets, net — — 13,500 — 13,500 Intercompany receivable (779,230) (66,313) — 845,543 — Investment in consolidated subsidiaries 807,451 (17,310) 503 (790,644) — Total Assets $ 38,417 $ 4,083,311 $ 1,290,883 $ (1,169,854) $ 4,242,757 LIABILITIES AND SHAREHOLDERS’ EQUITY Current Liabilities: Accounts payable $ 887 $ 213,809 $ 690 $ (14,549) $ 200,837 Air traffic liability and current frequent flyer deferred revenue — 784,922 8,088 — 793,010 Other accrued liabilities — 169,287 13,652 (10,204) 172,735 Current maturities of long-term debt, less discount — 131,824 — — 131,824 Current maturities of finance lease obligations — 8,883 — — 8,883 Current maturities of operating leases — 74,640 — — 74,640 Total 887 1,383,365 22,430 (24,753) 1,381,929 Long-Term Debt — 2,076,095 1,192,034 (1,200,000) 2,068,129 Intercompany payable 143,021 (586,195) 130,400 312,774 — Other Liabilities and Deferred Credits: Noncurrent finance lease obligations — 54,012 — — 54,012 Noncurrent operating leases — 267,103 — — 267,103 Accumulated pension and other post-retirement benefit obligations — 144,011 — — 144,011 Other liabilities and deferred credits — 83,705 — — 83,705 Noncurrent frequent flyer deferred revenue — 296,336 — — 296,336 Deferred tax liabilities, net — 53,024 — — 53,024 Total — 898,191 — — 898,191 Shareholders’ equity (105,491) 311,855 (53,981) (257,875) (105,492) TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 38,417 $ 4,083,311 $ 1,290,883 $ (1,169,854) $ 4,242,757 Condensed Consolidating Balance Sheets December 31, 2023 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current assets: Cash and cash equivalents $ 8,707 $ 113,026 $ 31,540 $ — $ 153,273 Restricted cash — — 17,250 — 17,250 Short-term investments — 755,224 — — 755,224 Accounts receivable, net 1,269 101,655 26,261 (23,327) 105,858 Income taxes receivable, net — 669 — — 669 Spare parts and supplies, net — 60,115 — — 60,115 Prepaid expenses and other — 78,551 — — 78,551 Total 9,976 1,109,240 75,051 (23,327) 1,170,940 Property and equipment at cost — 3,164,145 — — 3,164,145 Less accumulated depreciation and amortization — (1,150,529) — — (1,150,529) Property and equipment, net — 2,013,616 — — 2,013,616 Assets held-for-sale — 262 873 — 1,135 Operating lease right-of-use assets — 413,237 — — 413,237 Long-term prepayments and other — 121,097 1,200,000 (1,200,000) 121,097 Goodwill and other intangible assets, net — — 13,500 — 13,500 Intercompany receivable (577,961) (57,591) — 635,552 — Investment in consolidated subsidiaries 807,451 (17,309) 502 (790,644) — Total Assets $ 239,466 $ 3,582,552 $ 1,289,926 $ (1,378,419) $ 3,733,525 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ 784 $ 212,464 $ 590 $ (14,615) $ 199,223 Air traffic liability and current frequent flyer deferred revenue — 623,324 10,021 — 633,345 Other accrued liabilities — 170,651 13,652 (8,712) 175,591 Current maturities of long-term debt, less discount — 43,857 — — 43,857 Current maturities of finance lease obligations — 10,053 — — 10,053 Current maturities of operating leases — 83,332 — — 83,332 Total 784 1,143,681 24,263 (23,327) 1,145,401 Long-Term Debt — 1,547,626 1,189,526 (1,200,000) 1,537,152 Intercompany payable 143,257 (573,873) 121,673 308,943 — Other Liabilities and Deferred Credits: Noncurrent finance lease obligations — 60,116 — — 60,116 Noncurrent operating leases — 303,119 — — 303,119 Accumulated pension and other post-retirement benefit obligations — 140,742 — — 140,742 Other liabilities and deferred credits — 77,154 — — 77,154 Noncurrent frequent flyer deferred revenue — 308,502 — — 308,502 Deferred tax liabilities, net — 65,914 — — 65,914 Total — 955,547 — — 955,547 Shareholders’ equity 95,425 509,571 (45,536) (464,035) 95,425 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 239,466 $ 3,582,552 $ 1,289,926 $ (1,378,419) $ 3,733,525 Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2024 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Used In Operating Activities $ (3,146) $ (14,339) $ (9,383) $ — $ (26,868) Cash Flows From Investing Activities: Net payments to affiliates — (12,095) 8,729 3,366 — Additions to property and equipment, including pre-delivery deposits — (256,980) — — (256,980) Proceeds from the disposition of aircraft and aircraft related equipment — 83 47 — 130 Purchases of investments — (232,113) — — (232,113) Sales of investments — 247,537 — — 247,537 Net cash provided by (used in) investing activities — (253,568) 8,776 3,366 (241,426) Cash Flows From Financing Activities: Long-term borrowings — 663,900 — — 663,900 Repayments of long-term debt and finance lease obligations — (28,258) — — (28,258) Debt issuance costs and discount — (9,928) — — (9,928) Net payments from affiliates 3,366 — — (3,366) — Payment for taxes withheld for stock compensation — (230) — — (230) Net cash provided by financing activities 3,366 625,484 — (3,366) 625,484 Net increase in cash and cash equivalents 220 357,577 (607) — 357,190 Cash, cash equivalents, & restricted cash - Beginning of Period 8,707 113,026 48,790 — 170,523 Cash, cash equivalents, & restricted cash - End of Period $ 8,927 $ 470,603 $ 48,183 $ — $ 527,713 Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2023 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Provided By (Used In) Operating Activities $ (2,337) $ 122,037 $ (8,038) $ — $ 111,662 Cash Flows From Investing Activities: Net payments to affiliates — 48,210 (13,211) (34,999) — Additions to property and equipment, including pre-delivery deposits — (169,354) — — (169,354) Proceeds from the disposition of aircraft and aircraft related equipment 15,293 43 4,527 — 19,863 Purchases of investments — (202,037) — — (202,037) Sales of investments — 275,312 — — 275,312 Net cash provided by (used in) investing activities 15,293 (47,826) (8,684) (34,999) (76,216) Cash Flows From Financing Activities: Repayments of long-term debt and finance lease obligations — (36,142) — — (36,142) Net payments from affiliates (34,999) — — 34,999 — Payment for taxes withheld for stock compensation — (1,113) — — (1,113) Net cash used in financing activities (34,999) (37,255) — 34,999 (37,255) Net increase (decrease) in cash and cash equivalents (22,043) 36,956 (16,722) — (1,809) Cash, cash equivalents, & restricted cash - Beginning of Period 28,620 151,357 66,643 — 246,620 Cash, cash equivalents, & restricted cash - End of Period $ 6,577 $ 188,313 $ 49,921 $ — $ 244,811

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net Loss	$ (67,594)	$ (137,565)	$ (12,335)	$ (98,257)	$ (205,159)	$ (110,592)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2024
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule of Information Related to Amounts Reclassified from AOCI	Reclassifications out of accumulated other comprehensive income (loss) by component are as follows: Details about accumulated other comprehensive income (loss) components Three months ended June 30, Six months ended June 30, Affected line items in the consolidated statements of operations where net income is presented 2024 2023 2024 2023 (in thousands) Amortization of defined benefit plan items Actuarial loss $ 290 $ 537 $ 580 $ 987 Nonoperating income (expense), other, net Prior service cost 173 186 346 331 Nonoperating income (expense), other, net Total before tax 463 723 926 1,318 Tax benefit (115) (167) (229) (314) Total, net of tax $ 348 $ 556 $ 697 $ 1,004 Short-term investments Realized gain on sales of investments $ (46) $ (679) $ (125) $ (1,072) Gains (losses) on investments, net Realized loss on sales of investments 147 2,257 177 3,168 Gains (losses) on investments, net Total before tax 101 1,578 52 2,096 Income tax benefit (25) (657) (13) (529) Total, net of tax $ 76 $ 921 $ 39 $ 1,567 Total reclassifications for the period $ 424 $ 1,477 $ 736 $ 2,571
Schedule of Amounts Included in Accumulated Other Comprehensive Income (Loss), Net of Taxes	A roll-forward of the amounts included in accumulated other comprehensive income (loss), net of taxes, for the three and six months ended June 30, 2024 and 2023 is as follows: Three months ended June 30, 2024 Defined Benefit Short-Term Investments Total (in thousands) Beginning balance $ (60,327) $ (17,708) $ (78,035) Other comprehensive income before reclassifications, net of tax — 419 419 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 348 76 424 Net current-period other comprehensive income 348 495 843 Ending balance $ (59,979) $ (17,213) $ (77,192) Three months ended June 30, 2023 Defined Benefit Plan Items Short-Term Investments Total (in thousands) Beginning balance $ (66,517) $ (30,701) $ (97,218) Other comprehensive loss before reclassifications, net of tax (81) (869) (950) Amounts reclassified from accumulated other comprehensive income (loss), net of tax 556 921 1,477 Net current-period other comprehensive income 475 52 527 Ending balance $ (66,042) $ (30,649) $ (96,691) Six months ended June 30, 2024 Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ (60,677) $ (18,475) $ (79,152) Other comprehensive income before reclassifications, net of tax 1 1,223 1,224 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 697 39 736 Net current-period other comprehensive income 698 1,262 1,960 Ending balance $ (59,979) $ (17,213) $ (77,192) Six months ended June 30, 2023 Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ (59,439) $ (35,727) $ (95,166) Other comprehensive income (loss) before reclassifications, net of tax (7,607) 3,511 (4,096) Amounts reclassified from accumulated other comprehensive income (loss), net of tax 1,004 1,567 2,571 Net current-period other comprehensive income (loss) (6,603) 5,078 (1,525) Ending balance $ (66,042) $ (30,649) $ (96,691)

Loss Per Share (Tables)

Loss Per Share (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share Basic and Diluted	The following table shows the computation of basic and diluted loss per share: Three Months Ended June 30, Six months ended June 30, 2024 2023 2024 2023 (in thousands, except for per share data) Numerator: Net Loss $ (67,594) $ (12,335) $ (205,159) $ (110,592) Denominator: Weighted average common stock shares outstanding - Basic 51,932 51,587 51,885 51,547 Weighted average common stock shares outstanding - Diluted 51,932 51,587 51,885 51,547 Net Loss Per Share Basic $ (1.30) $ (0.24) $ (3.95) $ (2.15) Diluted $ (1.30) $ (0.24) $ (3.95) $ (2.15)

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The Company's operating revenues by geographic region (as defined by the U.S. Department of Transportation (DOT)) are summarized below: Three Months Ended June 30, Six months ended June 30, 2024 2023 2024 2023 Geographic Information (in thousands) Domestic $ 591,023 $ 564,684 $ 1,083,433 $ 1,050,813 Pacific 140,882 142,244 294,039 268,718 Total operating revenue $ 731,905 $ 706,928 $ 1,377,472 $ 1,319,531 Three Months Ended June 30, Six months ended June 30, 2024 2023 2024 2023 Passenger Revenue by Type (in thousands) Passenger revenue, excluding frequent flyer $ 614,666 $ 597,558 $ 1,154,288 $ 1,103,520 Frequent flyer revenue, transportation component 51,363 47,434 95,189 89,998 Passenger Revenue $ 666,029 $ 644,992 $ 1,249,477 $ 1,193,518 Other revenue (e.g., cargo and other miscellaneous) $ 36,635 $ 29,863 $ 70,182 $ 65,001 Frequent flyer revenue, marketing and brand component 29,241 32,073 57,813 61,012 Other Revenue $ 65,876 $ 61,936 $ 127,995 $ 126,013
Schedule of Frequent Flyer Liability for Future Award Redemptions	The table below presents the Company's frequent flyer liability balance: June 30, 2024 December 31, 2023 (in thousands) Air traffic liability (current portion of frequent flyer revenue) $ 219,030 $ 201,418 Noncurrent frequent flyer deferred revenue 296,336 308,502 Total frequent flyer liability $ 515,366 $ 509,920
Schedule of Frequent Flyer Deferred Revenue	The table below presents a roll forward of Frequent flyer deferred revenue for the six months ended June 30, 2024 and 2023: 2024 2023 (in thousands) Total frequent flyer liability - beginning balance $ 509,920 $ 484,580 Miles awarded 103,359 107,947 Travel miles redeemed (Passenger Revenue) (95,189) (89,998) Non-travel miles redeemed (Other Revenue) (2,724) (2,454) Total frequent flyer liability - ending balance $ 515,366 $ 500,075

Short-Term Investments (Tables)

Short-Term Investments (Tables)	6 Months Ended
	Jun. 30, 2024
Short-Term Investments [Abstract]
Schedule of Short-Term Investments	The following is a summary of short-term investments held as of June 30, 2024 and December 31, 2023: June 30, 2024 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Debt securities Corporate debt securities $ 206,872 $ 175 $ (12,324) $ 194,723 U.S. government and agency securities 270,485 84 (4,268) 266,301 Other fixed income securities 136,355 28 (4,996) 131,387 Asset-backed securities 34,334 83 (1,147) 33,270 Collateralized loan obligations 35,340 41 (371) 35,010 Bank notes 8,625 51 (170) 8,506 Total debt securities 692,011 462 (23,276) 669,197 Derivatives 320 1,113 (95) 1,338 Equity securities 80,914 — (7,055) 73,859 Other investments measured at net asset value 1,000 215 — 1,215 Total short-term investments $ 774,245 $ 1,790 $ (30,426) $ 745,609 December 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Debt securities Corporate debt securities $ 217,777 $ 440 $ (10,717) $ 207,500 U.S. government and agency securities 305,169 168 (4,908) 300,429 Other fixed income securities 35,319 42 (6,847) 28,514 Asset-backed securities 24,298 69 (1,281) 23,086 Collateralized loan obligations 39,628 83 (1,335) 38,376 Bank notes 9,118 — (204) 8,914 Total debt securities 631,309 802 (25,292) 606,819 Derivatives 233 1,026 (745) 514 Equity securities 161,677 — (14,866) 146,811 Other investments measured at net asset value 1,000 80 — 1,080 Total short-term investments $ 794,219 $ 1,908 $ (40,903) $ 755,224 The following tables present fair values and gross unrealized losses by security type and length of time that individual debt securities have been in a continuous unrealized loss position: Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses June 30, 2024 (in thousands) Debt securities Corporate debt securities $ 33,887 $ (238) $ 132,944 $ (12,086) $ 166,831 $ (12,324) U.S. government and agency securities 52,530 (68) 187,059 (4,200) 239,589 (4,268) Other fixed income securities 1,813 (17) 24,153 (4,979) 25,966 (4,996) Asset-backed securities 5,579 (39) 13,188 (1,108) 18,767 (1,147) Collateralized loan obligations 4,042 (30) 8,441 (341) 12,483 (371) Bank notes 4,047 (55) 1,484 (115) 5,531 (170) $ 101,898 $ (447) $ 367,269 $ (22,829) $ 469,167 $ (23,276) Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2023 (in thousands) Debt securities Corporate debt securities $ 9,784 $ (233) $ 154,607 $ (10,484) $ 164,391 $ (10,717) U.S. government and agency securities 82,930 (608) 193,400 (4,300) 276,330 (4,908) Other fixed income securities 1,867 (26) 21,933 (6,821) 23,800 (6,847) Asset-backed securities 2,225 (17) 14,881 (1,264) 17,106 (1,281) Collateralized loan obligations 5,032 (63) 29,445 (1,272) 34,477 (1,335) Bank notes 8,396 (164) 519 (40) 8,915 (204) $ 110,234 $ (1,111) $ 414,785 $ (24,181) $ 525,019 $ (25,292)
Schedule of Contractual Maturities of Short-Term Investments	Contractual maturities of debt securities as of June 30, 2024 are shown below: Under 1 Year 1 to 5 Years Over 5 Years Total (in thousands) Debt Securities Corporate debt $ 1,572 $ 110,831 $ 82,320 $ 194,723 U.S. government and agency debt 40,646 214,108 11,547 266,301 Other fixed income securities 103,106 13,993 14,288 131,387 Asset-backed securities 1,330 14,257 17,683 33,270 Collateralized loan obligations — 150 34,860 35,010 Bank notes — 4,448 4,058 8,506 Total debt securities $ 146,654 $ 357,787 $ 164,756 $ 669,197

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	The tables below present the Company’s financial assets and liabilities measured at fair value on a recurring basis: Fair Value Measurements as of June 30, 2024 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 348,818 $ 344,273 $ 4,545 $ — Restricted cash 17,250 17,250 — — Short-term investments Debt securities Corporate debt securities 194,723 — 190,172 4,551 U.S. government and agency securities 266,301 — 266,301 — Other fixed income securities 131,387 — 131,387 — Asset-backed securities 33,270 — 25,516 7,754 Collateralized loan obligations 35,010 — 34,394 616 Bank notes 8,506 — 1,710 6,796 Total debt securities 669,197 — 649,480 19,717 Derivatives 1,338 — 1,338 — Equity securities 73,859 72,920 939 — Other investments measured at net asset value 1,215 — — — Total short-term investments 745,609 72,920 651,757 19,717 Other Assets Fuel derivative contracts 2,495 — 2,495 — Assets held-for-sale 1,072 — — 1,072 Total assets measured at fair value $ 1,115,244 $ 434,443 $ 658,797 $ 20,789 Fair Value Measurements as of December 31, 2023 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 99,965 $ 99,279 $ 686 $ — Restricted cash 17,250 17,250 — — Short-term investments Debt securities Corporate debt securities 207,500 — 202,873 4,627 U.S. government and agency securities 300,429 — 300,429 — Other fixed income securities 28,514 — 28,514 — Asset-backed securities 23,086 — 15,172 7,914 Collateralized loan obligations 38,376 — 38,123 253 Bank notes 8,914 — 2,046 6,868 Total debt securities 606,819 — 587,157 19,662 Derivatives 514 — 514 — Equity securities 146,811 146,031 780 — Other investments measured at net asset value 1,080 — — — Total short-term investments 755,224 146,031 588,451 19,662 Other Assets Fuel derivative contracts 2,069 — 2,069 — Assets held-for-sale 1,135 — — 1,135 Total assets measured at fair value $ 875,643 $ 262,560 $ 591,206 $ 20,797
Schedule of Reconciliation of Short Term Investments and Assets Held for Sale Measured at Fair Value on a Recurring Basis Unobservable Input	The reconciliation of the Company's short-term investments measured at fair value on a recurring basis using unobservable inputs (Level 3) for the six months ended June 30, 2024 is as follows: Short-term Investment Activity for the six months ended June 30, 2024 Asset-Backed Securities Bank Notes Collateralized Loan Obligations Corporate Debt Securities Total (in thousands) Beginning balance as of December 31, 2023 $ 7,914 $ 6,868 $ 253 $ 4,627 $ 19,662 Purchases — — 363 — 363 Sale of investments — — — (10) (10) Redemptions and paydowns (80) (136) — — (216) Amortization and accretion, net 30 (1) — (2) 27 Realized and unrealized gains (losses), net (110) 65 — (64) (109) Ending balance as of June 30, 2024 $ 7,754 $ 6,796 $ 616 $ 4,551 $ 19,717 Short-term Investment Activity for the six months ended June 30, 2023 Asset-Backed Securities Bank Notes Collateralized Loan Obligations Corporate Debt Securities Total (in thousands) Beginning balance as of December 31, 2022 $ 9,033 $ 9,426 $ 2,558 $ 8,173 $ 29,190 Purchases — 944 — — 944 Sale of investments — (2,189) — — (2,189) Redemptions and paydowns (49) (341) — (12) (402) Amortization and accretion, net 32 2 — 3 37 Realized and unrealized gains (losses), net (146) 65 (130) (21) (232) Ending balance as of June 30, 2023 $ 8,870 $ 7,907 $ 2,428 $ 8,143 $ 27,348
Schedule of Debt (Excluding Obligations Under Capital Leases) Measured at Fair Value	The table below presents the Company’s debt measured at fair value: Fair Value of Debt June 30, 2024 December 31, 2023 Carrying Fair Value Carrying Fair Value Amount Total Level 1 Level 2 Level 3 Amount Total Level 1 Level 2 Level 3 (in thousands) $ 2,199,953 $ 2,068,918 $ — $ — $ 2,068,918 $ 1,581,009 $ 1,406,721 $ — $ — $ 1,406,721

Financial Derivative Instrume_2

Financial Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Realized and Unrealized Gains and Losses Recorded as Nonoperating Income (Expense)	The following table reflects the amount of realized and unrealized gains and losses recorded as Nonoperating income (expense) in the Consolidated Statements of Operations. Three months ended June 30, Six months ended June 30, Fuel derivative contracts 2024 2023 2024 2023 (in thousands) Losses realized at settlement $ (1,954) $ (2,795) $ (4,352) $ (4,308) Reversal of prior period unrealized amounts 2,520 6,192 4,335 2,639 Unrealized losses that will settle in future periods (2,429) (7,055) (2,428) (7,055) Losses on fuel derivatives recorded as Nonoperating Expense $ (1,863) $ (3,658) $ (2,445) $ (8,724)
Schedule of Fair Value of the Asset and Liability Derivatives and Net Derivative Positions	The following table presents the gross fair value of asset and liability derivatives, all of which are not designated as hedging instruments under ASC 815, as well as the net derivative positions and location of the asset and liability balances within the Consolidated Balance Sheets. Derivative positions as of June 30, 2024 Balance Sheet Notional Amount Final Gross Fair Gross Fair Net Derivative Position (in thousands) (in thousands) Derivatives not designated as hedges Fuel derivative contracts Prepaid expenses and other 95,802 gallons June 2025 $ 2,495 $ — $ 2,495 Foreign currency derivatives Short-term investments 37,627 Euro March 2025 $ 1,023 $ (22) $ 1,001 Interest rate contracts Short-term investments 52,867 US Dollars May 2028 $ 433 $ (96) $ 337 Derivative positions as of December 31, 2023 Balance Sheet Notional Amount Final Gross Fair Gross Fair Net Derivative Position (in thousands) (in thousands) Derivatives not designated as hedges Fuel derivative contracts Prepaid expenses and other 90,258 gallons December 2024 $ 2,069 $ — $ 2,069 Foreign currency derivatives Short-term investments 38,385 Euro March 2025 $ 543 $ (569) $ (26) Interest rate contracts Short-term investments 16,110 US Dollars May 2028 $ 797 $ (257) $ 540

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt, net of unamortized discounts and issuance costs, is outlined as follows: June 30, 2024 December 31, 2023 (in thousands) Class A EETC-13, fixed interest rate of 3.9%, semiannual principal and interest payments, remaining balance due at maturity in January 2026 $ 153,067 $ 162,953 Japanese Yen denominated financing, fixed interest rate of 1.05%, quarterly principal and interest payments, remaining balance due at maturity in May 2030 15,456 19,050 Japanese Yen denominated financing, fixed interest rate of 1.01%, semiannual principal and interest payments, remaining balance due at maturity in June 2030 13,267 16,394 Japanese Yen denominated financing, fixed interest rate of 0.65%, quarterly principal and interest payments, remaining balance due at maturity in March 2025 33,096 45,107 Japanese Yen denominated financing, fixed interest rate of 0.76%, semiannual principal and interest payments, remaining balance due at maturity in September 2031 38,065 46,225 CARES Act Payroll Support Program, fixed interest rate of 1.0% for the first through fifth years and variable interest of SOFR plus a margin of 2.0% for the sixth year through maturity, semiannual interest payments, principal balance due at maturity in April 2030 through September 2030 60,278 60,278 Payroll Support Program Extension, fixed interest rate of 1.0% for the first through fifth years and variable interest of SOFR plus a margin of 2.0% for the sixth year through maturity, semiannual interest payments, principal balance due at maturity in March 2031 through April 2031 27,797 27,797 Payroll Support Program 3, fixed interest rate of 1.0% for the first through fifth years and variable interest of SOFR plus a margin of 2.0% for the sixth year through maturity, semiannual interest payments, principal balance due at maturity in April 2031 through June 2031 23,908 23,908 Financing Lease, variable interest rate of SOFR plus a margin of 3.85%, quarterly principal and interest payments, remaining balance due at maturity in January 2034 129,175 — Boeing 787-9 Aircraft Facility Agreement consisting of (a) $115.0 million Senior note with a variable rate of SOFR + 3.5% maturing in April 2034, and (b) $15.0 million Junior note with a fixed interest rate of 10.4934%, maturing in April 2029 130,000 — Airbus A321neo Aircraft Facility Agreements, collateralized by 10 aircraft, maturity in June 2032. Five loans include variable rates based on SOFR plus a margin of 3.20% and the other five loans have a fixed interest rate ranging between 7.25% and 7.50%, quarterly principal and interest payments. 402,500 — Loyalty Program Financing, fixed interest of 5.75%, quarterly interest payments, principal balance due at maturity in January 2026 1,200,000 1,200,000 Unamortized debt discount and issuance costs (26,656) (20,703) Total Debt $ 2,199,953 $ 1,581,009 Less: Current maturities of long-term debt (131,824) (43,857) Long-Term Debt, less discount $ 2,068,129 $ 1,537,152
Schedule of Maturities of Long-Term Debt	As of June 30, 2024, the expected maturities of debt, excluding debt issuance costs, for the remainder of 2024 and the next four years, and thereafter, were as follows (in thousands): Remaining months in 2024 $ 57,191 2025 125,947 2026 1,411,554 2027 84,902 2028 85,846 Thereafter 461,169 $ 2,226,609

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Schedule of Net Periodic Benefit Cost	The components of net periodic benefit cost for the Company’s defined benefit and other post-retirement plans included the following: Three months ended June 30, Six months ended June 30, Components of Net Period Benefit Cost 2024 2023 2024 2023 (in thousands) Service cost $ 2,514 $ 1,791 $ 5,028 $ 3,420 Other cost: Interest cost 6,307 6,513 12,614 12,943 Expected return on plan assets (5,843) (5,529) (11,686) (11,060) Recognized net actuarial loss 463 723 926 1,318 Total other components of the net periodic benefit cost 927 1,707 1,854 3,201 Net periodic benefit cost $ 3,441 $ 3,498 $ 6,882 $ 6,621

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Firm Aircraft and Engine Orders and Purchase Rights	As of June 30, 2024, the Company had the following aircraft-related commitments consisting of firm aircraft and engine orders and purchase rights for additional aircraft and engines: Aircraft Type Firm Orders Purchase Rights Expected Delivery Dates A321neo aircraft — 9 N/A Boeing 787-9 aircraft 10 8 Between 2024 and 2027 General Electric GEnx spare engines: Boeing 787-9 spare engines 2 1 Between 2024 and 2027
Schedule of Gross Committed Expenditures and Committed Payments	The gross committed expenditures and committed payments as of June 30, 2024 and for the next five fiscal years and thereafter are detailed below: Aircraft and Aircraft Related Other Total Committed (in thousands) Remaining in 2024 $ 72,992 $ 13,941 $ 86,933 2025 563,736 21,944 585,680 2026 667,219 12,265 679,484 2027 253,228 8,270 261,498 2028 — 3,311 3,311 Thereafter — 58,285 58,285 $ 1,557,175 $ 118,016 $ 1,675,191

Assets Held-For-Sale (Tables)

Assets Held-For-Sale (Tables)	6 Months Ended
	Jun. 30, 2024
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Assets Held For Sale Activity	A roll-forward of the Assets held-for-sale activity for the six months ended June 30, 2024 and 2023 is as follows: Assets Held-For-Sale Activity for the six months ended June 30, 2024 ATR Aircraft Commercial Real Estate Total (in thousands) Beginning balance as of December 31, 2023 $ 1,135 $ — $ 1,135 Additions — — — Proceeds from sale (130) — (130) Realized gains 67 — 67 Realized losses — — — Ending balance as of June 30, 2024 $ 1,072 $ — $ 1,072 Assets Held-For-Sale Activity for the six months ended June 30, 2023 ATR Aircraft Commercial Real Estate Total (in thousands) Beginning balance as of December 31, 2022 $ 7,728 $ 6,291 $ 14,019 Additions — — — Proceeds from sale (4,546) (16,470) (21,016) Realized gains 76 10,179 10,255 Realized losses (413) — (413) Ending balance as of June 30, 2023 $ 2,845 $ — $ 2,845

Condensed Consolidating Finan_2

Condensed Consolidating Financial Information (Tables)	6 Months Ended
	Jun. 30, 2024
Condensed Financial Information Disclosure [Abstract]
Schedule of Condensed Consolidating Statements of Operations and Comprehensive Loss	Condensed Consolidating Statements of Operations and Comprehensive Loss Three months ended June 30, 2024 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 731,963 $ 13,859 $ (13,917) $ 731,905 Operating Expenses: Wages and benefits — 265,024 — — 265,024 Aircraft fuel, including taxes and delivery — 179,153 — — 179,153 Maintenance, materials and repairs — 69,897 — — 69,897 Aircraft and passenger servicing — 47,854 — — 47,854 Commissions and other selling 1 29,069 77 (79) 29,068 Aircraft rent — 29,891 — — 29,891 Other rentals and landing fees — 45,011 — — 45,011 Depreciation and amortization — 35,068 — — 35,068 Purchased services 50 38,948 93 (66) 39,025 Special items — 6,497 — — 6,497 Other 1,580 52,450 546 (13,772) 40,804 Total 1,631 798,862 716 (13,917) 787,292 Operating Income (Loss) (1,631) (66,899) 13,143 — (55,387) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (66,077) (4,248) — 70,325 — Interest expense and amortization of debt discounts and issuance costs — (10,563) (18,507) 746 (28,324) Interest income 110 10,583 1,187 (746) 11,134 Capitalized interest — 2,541 — — 2,541 Losses on fuel derivatives — (1,863) — — (1,863) Other components of net periodic pension cost — (927) — — (927) Losses on investments, net — (654) — — (654) Gains on foreign debt — 6,470 — — 6,470 Other, net — (584) — — (584) Total (65,967) 755 (17,320) 70,325 (12,207) Loss Before Income Taxes (67,598) (66,144) (4,177) 70,325 (67,594) Income tax benefit — — — — — Net Loss $ (67,598) $ (66,144) $ (4,177) $ 70,325 $ (67,594) Comprehensive Loss $ (66,751) $ (65,301) $ (4,177) $ 69,478 $ (66,751) Condensed Consolidating Statements of Operations and Comprehensive Loss Three months ended June 30, 2023 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 707,032 $ 13,946 $ (14,050) $ 706,928 Operating Expenses: Wages and benefits — 237,680 — — 237,680 Aircraft fuel, including taxes and delivery — 166,380 — — 166,380 Maintenance, materials and repairs — 53,657 — — 53,657 Aircraft and passenger servicing — 43,126 — — 43,126 Commissions and other selling 9 28,407 58 (83) 28,391 Aircraft rent — 26,159 — — 26,159 Depreciation and amortization — 33,348 — — 33,348 Other rentals and landing fees — 41,487 — — 41,487 Purchased services 52 37,089 106 (66) 37,181 Other 1,798 60,126 1,076 (13,901) 49,099 Total 1,859 727,459 1,240 (14,050) 716,508 Operating Income (Loss) (1,859) (20,427) 12,706 — (9,580) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (10,620) (4,172) — 14,792 — Interest expense and amortization of debt discounts and issuance costs — (4,966) (18,487) 748 (22,705) Interest income 145 12,863 1,279 (748) 13,539 Capitalized interest — 1,945 — — 1,945 Losses on fuel derivatives — (3,658) — — (3,658) Other components of net periodic pension cost — (1,707) — — (1,707) Losses on investments, net — (3,549) — — (3,549) Gains on foreign debt — 12,174 — — 12,174 Other, net — (920) — — (920) Total (10,475) 8,010 (17,208) 14,792 (4,881) Loss Before Income Taxes (12,334) (12,417) (4,502) 14,792 (14,461) Income tax benefit — (2,126) — — (2,126) Net Loss $ (12,334) $ (10,291) $ (4,502) $ 14,792 $ (12,335) Comprehensive Loss $ (11,808) $ (9,764) $ (4,502) $ 14,266 $ (11,808) Condensed Consolidating Statements of Operations and Comprehensive Loss Six months ended June 30, 2024 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,377,554 $ 27,642 $ (27,724) $ 1,377,472 Operating Expenses: Aircraft fuel, including taxes and delivery — 367,931 — — 367,931 Wages and benefits — 526,959 — — 526,959 Aircraft rent — 59,597 — — 59,597 Maintenance materials and repairs — 140,868 — — 140,868 Aircraft and passenger servicing — 93,278 — — 93,278 Commissions and other selling 11 57,559 109 (168) 57,511 Depreciation and amortization — 68,035 — — 68,035 Other rentals and landing fees — 88,138 — — 88,138 Purchased services 170 77,275 186 (131) 77,500 Special items — 14,979 — — 14,979 Other 3,930 109,021 1,183 (27,425) 86,709 Total 4,111 1,603,640 1,478 (27,724) 1,581,505 Operating Income (Loss) (4,111) (226,086) 26,164 — (204,033) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (201,269) (8,720) — 209,989 — Interest expense and amortization of debt discounts and issuance costs — (16,877) (37,008) 1,492 (52,393) Other components of net periodic pension cost — (1,854) — — (1,854) Interest income 219 20,030 2,398 (1,492) 21,155 Capitalized interest — 5,675 — — 5,675 Losses on fuel derivatives — (2,445) — — (2,445) Loss on extinguishment of debt — — — — — Losses on investments, net — (184) — — (184) Gains on foreign debt — 14,989 — — 14,989 Other, net — (1,354) — — (1,354) Total (201,050) 9,260 (34,610) 209,989 (16,411) Loss Before Income Taxes (205,161) (216,826) (8,446) 209,989 (220,444) Income tax benefit — (15,285) — — (15,285) Net Loss $ (205,161) $ (201,541) $ (8,446) $ 209,989 $ (205,159) Comprehensive Loss $ (203,199) $ (199,581) $ (8,446) $ 208,027 $ (203,199) Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Six months ended June 30, 2023 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,318,830 $ 28,222 $ (27,521) $ 1,319,531 Operating Expenses: Aircraft fuel, including taxes and delivery — 364,005 — — 364,005 Wages and benefits — 479,613 — — 479,613 Aircraft rent — 54,330 — — 54,330 Maintenance materials and repairs — 103,974 (31) — 103,943 Aircraft and passenger servicing — 85,658 — — 85,658 Commissions and other selling 18 56,561 281 (230) 56,630 Depreciation and amortization — 66,015 — — 66,015 Other rentals and landing fees — 80,226 — (19) 80,207 Purchased services 171 71,540 674 (131) 72,254 Other 3,627 115,690 (8,292) (27,141) 83,884 Total 3,816 1,477,612 (7,368) (27,521) 1,446,539 Operating Income (Loss) (3,816) (158,782) 35,590 — (127,008) Nonoperating Income (Expense): Undistributed net loss of subsidiaries (107,316) (9,002) — 116,318 — Interest expense and amortization of debt discounts and issuance costs — (10,114) (36,959) 1,488 (45,585) Other components of net periodic pension cost — (3,201) — — (3,201) Interest income 543 28,405 2,544 (1,488) 30,004 Capitalized interest — 3,404 — — 3,404 Loss on extinguishment of debt — — — — — Losses on fuel derivatives — (8,724) — — (8,724) Losses on investments, net — (2,852) — — (2,852) Gains on foreign debt — 14,434 — — 14,434 Other, net — (764) — — (764) Total (106,773) 11,586 (34,415) 116,318 (13,284) Income (Loss) Before Income Taxes (110,589) (147,196) 1,175 116,318 (140,292) Income tax benefit — (29,700) — — (29,700) Net Income (Loss) $ (110,589) $ (117,496) $ 1,175 $ 116,318 $ (110,592) Comprehensive Income (Loss) $ (112,117) $ (119,021) $ 1,175 $ 117,846 $ (112,117)
Schedule of Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheets June 30, 2024 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current Assets: Cash and cash equivalents $ 8,927 $ 470,603 $ 30,933 $ — $ 510,463 Restricted cash — — 17,250 — 17,250 Short-term investments — 745,609 — — 745,609 Accounts receivable, net — 107,739 27,849 (24,753) 110,835 Income taxes receivable 1,269 1,450 — — 2,719 Spare parts and supplies, net — 70,627 — — 70,627 Prepaid expenses and other — 79,403 — — 79,403 Total 10,196 1,475,431 76,032 (24,753) 1,536,906 Property and equipment at cost — 3,392,362 — — 3,392,362 Less accumulated depreciation and amortization — (1,192,373) — — (1,192,373) Property and equipment, net — 2,199,989 — — 2,199,989 Assets held-for-sale — 224 848 — 1,072 Operating lease right-of-use assets — 371,519 — — 371,519 Long-term prepayments and other — 119,771 1,200,000 (1,200,000) 119,771 Goodwill and other intangible assets, net — — 13,500 — 13,500 Intercompany receivable (779,230) (66,313) — 845,543 — Investment in consolidated subsidiaries 807,451 (17,310) 503 (790,644) — Total Assets $ 38,417 $ 4,083,311 $ 1,290,883 $ (1,169,854) $ 4,242,757 LIABILITIES AND SHAREHOLDERS’ EQUITY Current Liabilities: Accounts payable $ 887 $ 213,809 $ 690 $ (14,549) $ 200,837 Air traffic liability and current frequent flyer deferred revenue — 784,922 8,088 — 793,010 Other accrued liabilities — 169,287 13,652 (10,204) 172,735 Current maturities of long-term debt, less discount — 131,824 — — 131,824 Current maturities of finance lease obligations — 8,883 — — 8,883 Current maturities of operating leases — 74,640 — — 74,640 Total 887 1,383,365 22,430 (24,753) 1,381,929 Long-Term Debt — 2,076,095 1,192,034 (1,200,000) 2,068,129 Intercompany payable 143,021 (586,195) 130,400 312,774 — Other Liabilities and Deferred Credits: Noncurrent finance lease obligations — 54,012 — — 54,012 Noncurrent operating leases — 267,103 — — 267,103 Accumulated pension and other post-retirement benefit obligations — 144,011 — — 144,011 Other liabilities and deferred credits — 83,705 — — 83,705 Noncurrent frequent flyer deferred revenue — 296,336 — — 296,336 Deferred tax liabilities, net — 53,024 — — 53,024 Total — 898,191 — — 898,191 Shareholders’ equity (105,491) 311,855 (53,981) (257,875) (105,492) TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 38,417 $ 4,083,311 $ 1,290,883 $ (1,169,854) $ 4,242,757 Condensed Consolidating Balance Sheets December 31, 2023 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current assets: Cash and cash equivalents $ 8,707 $ 113,026 $ 31,540 $ — $ 153,273 Restricted cash — — 17,250 — 17,250 Short-term investments — 755,224 — — 755,224 Accounts receivable, net 1,269 101,655 26,261 (23,327) 105,858 Income taxes receivable, net — 669 — — 669 Spare parts and supplies, net — 60,115 — — 60,115 Prepaid expenses and other — 78,551 — — 78,551 Total 9,976 1,109,240 75,051 (23,327) 1,170,940 Property and equipment at cost — 3,164,145 — — 3,164,145 Less accumulated depreciation and amortization — (1,150,529) — — (1,150,529) Property and equipment, net — 2,013,616 — — 2,013,616 Assets held-for-sale — 262 873 — 1,135 Operating lease right-of-use assets — 413,237 — — 413,237 Long-term prepayments and other — 121,097 1,200,000 (1,200,000) 121,097 Goodwill and other intangible assets, net — — 13,500 — 13,500 Intercompany receivable (577,961) (57,591) — 635,552 — Investment in consolidated subsidiaries 807,451 (17,309) 502 (790,644) — Total Assets $ 239,466 $ 3,582,552 $ 1,289,926 $ (1,378,419) $ 3,733,525 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ 784 $ 212,464 $ 590 $ (14,615) $ 199,223 Air traffic liability and current frequent flyer deferred revenue — 623,324 10,021 — 633,345 Other accrued liabilities — 170,651 13,652 (8,712) 175,591 Current maturities of long-term debt, less discount — 43,857 — — 43,857 Current maturities of finance lease obligations — 10,053 — — 10,053 Current maturities of operating leases — 83,332 — — 83,332 Total 784 1,143,681 24,263 (23,327) 1,145,401 Long-Term Debt — 1,547,626 1,189,526 (1,200,000) 1,537,152 Intercompany payable 143,257 (573,873) 121,673 308,943 — Other Liabilities and Deferred Credits: Noncurrent finance lease obligations — 60,116 — — 60,116 Noncurrent operating leases — 303,119 — — 303,119 Accumulated pension and other post-retirement benefit obligations — 140,742 — — 140,742 Other liabilities and deferred credits — 77,154 — — 77,154 Noncurrent frequent flyer deferred revenue — 308,502 — — 308,502 Deferred tax liabilities, net — 65,914 — — 65,914 Total — 955,547 — — 955,547 Shareholders’ equity 95,425 509,571 (45,536) (464,035) 95,425 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 239,466 $ 3,582,552 $ 1,289,926 $ (1,378,419) $ 3,733,525
Schedule of Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2024 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Used In Operating Activities $ (3,146) $ (14,339) $ (9,383) $ — $ (26,868) Cash Flows From Investing Activities: Net payments to affiliates — (12,095) 8,729 3,366 — Additions to property and equipment, including pre-delivery deposits — (256,980) — — (256,980) Proceeds from the disposition of aircraft and aircraft related equipment — 83 47 — 130 Purchases of investments — (232,113) — — (232,113) Sales of investments — 247,537 — — 247,537 Net cash provided by (used in) investing activities — (253,568) 8,776 3,366 (241,426) Cash Flows From Financing Activities: Long-term borrowings — 663,900 — — 663,900 Repayments of long-term debt and finance lease obligations — (28,258) — — (28,258) Debt issuance costs and discount — (9,928) — — (9,928) Net payments from affiliates 3,366 — — (3,366) — Payment for taxes withheld for stock compensation — (230) — — (230) Net cash provided by financing activities 3,366 625,484 — (3,366) 625,484 Net increase in cash and cash equivalents 220 357,577 (607) — 357,190 Cash, cash equivalents, & restricted cash - Beginning of Period 8,707 113,026 48,790 — 170,523 Cash, cash equivalents, & restricted cash - End of Period $ 8,927 $ 470,603 $ 48,183 $ — $ 527,713 Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2023 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Provided By (Used In) Operating Activities $ (2,337) $ 122,037 $ (8,038) $ — $ 111,662 Cash Flows From Investing Activities: Net payments to affiliates — 48,210 (13,211) (34,999) — Additions to property and equipment, including pre-delivery deposits — (169,354) — — (169,354) Proceeds from the disposition of aircraft and aircraft related equipment 15,293 43 4,527 — 19,863 Purchases of investments — (202,037) — — (202,037) Sales of investments — 275,312 — — 275,312 Net cash provided by (used in) investing activities 15,293 (47,826) (8,684) (34,999) (76,216) Cash Flows From Financing Activities: Repayments of long-term debt and finance lease obligations — (36,142) — — (36,142) Net payments from affiliates (34,999) — — 34,999 — Payment for taxes withheld for stock compensation — (1,113) — — (1,113) Net cash used in financing activities (34,999) (37,255) — 34,999 (37,255) Net increase (decrease) in cash and cash equivalents (22,043) 36,956 (16,722) — (1,809) Cash, cash equivalents, & restricted cash - Beginning of Period 28,620 151,357 66,643 — 246,620 Cash, cash equivalents, & restricted cash - End of Period $ 6,577 $ 188,313 $ 49,921 $ — $ 244,811

Merger Agreement with Alaska _2

Merger Agreement with Alaska Air Group (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	Dec. 02, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Minimum
Business Acquisition [Line Items]
Merger, period until expected close				12 months
Maximum
Business Acquisition [Line Items]
Merger, period until expected close				18 months
Alaska Air Group
Business Acquisition [Line Items]
Business acquisition, share price (in dollars per share)	$ 18
Termination fee	$ 39.6
Acquisition related costs		$ 6.5	$ 0	$ 15	$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule of Information Related to Amounts Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Amounts reclassified from AOCI
Nonoperating income (expense), other, net	$ 584		$ 920		$ 1,354	$ 764
Income tax benefit	0		(2,126)		(15,285)	(29,700)
Total, net of tax	67,594	$ 137,565	12,335	$ 98,257	205,159	110,592
Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Total, net of tax	424		1,477		736	2,571
Actuarial loss | Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Nonoperating income (expense), other, net	290		537		580	987
Prior service cost | Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Nonoperating income (expense), other, net	173		186		346	331
Amortization of defined benefit plan items | Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Total before tax	463		723		926	1,318
Income tax benefit	(115)		(167)		(229)	(314)
Total, net of tax	348		556		697	1,004
Short-term investments | Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Realized gain on sales of investments	(46)		(679)		(125)	(1,072)
Realized loss on sales of investments	147		2,257		177	3,168
Total before tax	101		1,578		52	2,096
Income tax benefit	(25)		(657)		(13)	(529)
Total, net of tax	$ 76		$ 921		$ 39	$ 1,567

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Schedule of Amounts Included in Accumulated Other Comprehensive Income (Loss), Net of Taxes (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance	$ (40,221)	$ 95,425	$ 233,320	$ 333,265	$ 95,425	$ 333,265
Other comprehensive income (loss) before reclassifications, net of tax	419		(950)		1,224	(4,096)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	424		1,477		736	2,571
Total other comprehensive income (loss)	843	1,117	527	(2,052)	1,960	(1,525)
Ending balance	(105,492)	(40,221)	223,817	233,320	(105,492)	223,817
Defined Benefit Plan Items
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance	(60,327)	(60,677)	(66,517)	(59,439)	(60,677)	(59,439)
Other comprehensive income (loss) before reclassifications, net of tax	0		(81)		1	(7,607)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	348		556		697	1,004
Total other comprehensive income (loss)	348		475		698	(6,603)
Ending balance	(59,979)	(60,327)	(66,042)	(66,517)	(59,979)	(66,042)
Short-Term Investments
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance	(17,708)	(18,475)	(30,701)	(35,727)	(18,475)	(35,727)
Other comprehensive income (loss) before reclassifications, net of tax	419		(869)		1,223	3,511
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	76		921		39	1,567
Total other comprehensive income (loss)	495		52		1,262	5,078
Ending balance	(17,213)	(17,708)	(30,649)	(30,701)	(17,213)	(30,649)
Total
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance	(78,035)	(79,152)	(97,218)	(95,166)	(79,152)	(95,166)
Total other comprehensive income (loss)	843	1,117	527	(2,052)
Ending balance	$ (77,192)	$ (78,035)	$ (96,691)	$ (97,218)	$ (77,192)	$ (96,691)

Loss Per Share - Schedule of Po

Loss Per Share - Schedule of Potential Dilution (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Oct. 20, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares excluded (in shares)	568,317	46,344	637,158	71,081
Numerator:
Net Loss	$ (67,594)	$ (12,335)	$ (205,159)	$ (110,592)
Denominator:
Weighted average common stock shares outstanding - Basic (in shares)	51,932,000	51,587,000	51,885,000	51,547,000
Weighted average common stock shares outstanding - Diluted (in shares)	51,932,000	51,587,000	51,885,000	51,547,000
Net Loss Per Share
Basic (in dollars per share)	$ (1.30)	$ (0.24)	$ (3.95)	$ (2.15)
Diluted (in dollars per share)	$ (1.30)	$ (0.24)	$ (3.95)	$ (2.15)
Amazon.com Services LLC
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrants issued (in shares)	8,142,534	8,183,451	8,142,534	8,183,451	9,442,443

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) business segment	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Disaggregation of Revenue [Line Items]
Number of significant lines of business offered by company | business			1
Number of reportable segments | segment			1
Expected timing of satisfaction for future revenue			represents revenue that is expected to be realized in future periods.
Non-refundable ticket expiration period			13 months
Passenger revenue, excluding frequent flyer
Disaggregation of Revenue [Line Items]
Air traffic liability	$ 567.7		$ 567.7		$ 423.1
Air traffic revenue recognized	306.4	$ 398.4	329.2	$ 412.2
Passenger revenue, excluding frequent flyer | Advanced Ticket Breakage
Disaggregation of Revenue [Line Items]
Air traffic revenue recognized	$ 15.5	$ 17.2	$ 32.9	$ 29.7

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Operating revenue	$ 731,905	$ 706,928	$ 1,377,472	$ 1,319,531
Passenger revenue, excluding frequent flyer
Disaggregation of Revenue [Line Items]
Operating revenue	614,666	597,558	1,154,288	1,103,520
Frequent flyer revenue, transportation component
Disaggregation of Revenue [Line Items]
Operating revenue	51,363	47,434	95,189	89,998
Passenger Revenue
Disaggregation of Revenue [Line Items]
Operating revenue	666,029	644,992	1,249,477	1,193,518
Other revenue (e.g., cargo and other miscellaneous)
Disaggregation of Revenue [Line Items]
Operating revenue	36,635	29,863	70,182	65,001
Frequent flyer revenue, marketing and brand component
Disaggregation of Revenue [Line Items]
Operating revenue	29,241	32,073	57,813	61,012
Other Revenue
Disaggregation of Revenue [Line Items]
Operating revenue	65,876	61,936	127,995	126,013
Domestic
Disaggregation of Revenue [Line Items]
Operating revenue	591,023	564,684	1,083,433	1,050,813
Pacific
Disaggregation of Revenue [Line Items]
Operating revenue	$ 140,882	$ 142,244	$ 294,039	$ 268,718

Revenue Recognition - Schedul_2

Revenue Recognition - Schedule of Frequent Flyer Liability for Future Award Redemptions (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Air traffic liability (current portion of frequent flyer revenue)	$ 793,010	$ 633,345
Noncurrent frequent flyer deferred revenue	296,336	308,502
Frequent flyer revenue
Disaggregation of Revenue [Line Items]
Air traffic liability (current portion of frequent flyer revenue)	219,030	201,418
Noncurrent frequent flyer deferred revenue	296,336	308,502
Total frequent flyer liability	$ 515,366	$ 509,920	$ 500,075	$ 484,580

Revenue Recognition - Schedul_3

Revenue Recognition - Schedule of Frequent Flyer Deferred Revenue (Details) - Frequent flyer revenue - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Movement in Deferred Revenue [Roll Forward]
Total Frequent flyer liability - beginning balance	$ 509,920	$ 484,580
Miles awarded	103,359	107,947
Travel miles redeemed (Passenger Revenue)	(95,189)	(89,998)
Non-travel miles redeemed (Other Revenue)	(2,724)	(2,454)
Total Frequent flyer liability - ending balance	$ 515,366	$ 500,075

Short-Term Investments - Schedu

Short-Term Investments - Schedule of Short-Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Amortized Cost	$ 774,245	$ 794,219
Gross Unrealized Gains	1,790	1,908
Gross Unrealized Losses	(30,426)	(40,903)
Fair Value	745,609	755,224
Fair value, less than 12 months	101,898	110,234
Unrealized losses, less than 12 months	(447)	(1,111)
Fair value, 12 months or greater	367,269	414,785
Unrealized losses, 12 months or greater	(22,829)	(24,181)
Fair Value	469,167	525,019
Unrealized Losses	(23,276)	(25,292)
Contractual Maturities
Total	745,609	755,224
Debt securities
Marketable Securities [Line Items]
Amortized Cost	692,011	631,309
Gross Unrealized Gains	462	802
Gross Unrealized Losses	(23,276)	(25,292)
Fair Value	669,197	606,819
Contractual Maturities
Under 1 Year	146,654
1 to 5 Years	357,787
Over 5 Years	164,756
Total	669,197	606,819
Corporate debt securities
Marketable Securities [Line Items]
Amortized Cost	206,872	217,777
Gross Unrealized Gains	175	440
Gross Unrealized Losses	(12,324)	(10,717)
Fair Value	194,723	207,500
Fair value, less than 12 months	33,887	9,784
Unrealized losses, less than 12 months	(238)	(233)
Fair value, 12 months or greater	132,944	154,607
Unrealized losses, 12 months or greater	(12,086)	(10,484)
Fair Value	166,831	164,391
Unrealized Losses	(12,324)	(10,717)
Contractual Maturities
Under 1 Year	1,572
1 to 5 Years	110,831
Over 5 Years	82,320
Total	194,723	207,500
U.S. government and agency securities
Marketable Securities [Line Items]
Amortized Cost	270,485	305,169
Gross Unrealized Gains	84	168
Gross Unrealized Losses	(4,268)	(4,908)
Fair Value	266,301	300,429
Fair value, less than 12 months	52,530	82,930
Unrealized losses, less than 12 months	(68)	(608)
Fair value, 12 months or greater	187,059	193,400
Unrealized losses, 12 months or greater	(4,200)	(4,300)
Fair Value	239,589	276,330
Unrealized Losses	(4,268)	(4,908)
Contractual Maturities
Under 1 Year	40,646
1 to 5 Years	214,108
Over 5 Years	11,547
Total	266,301	300,429
Other fixed income securities
Marketable Securities [Line Items]
Amortized Cost	136,355	35,319
Gross Unrealized Gains	28	42
Gross Unrealized Losses	(4,996)	(6,847)
Fair Value	131,387	28,514
Fair value, less than 12 months	1,813	1,867
Unrealized losses, less than 12 months	(17)	(26)
Fair value, 12 months or greater	24,153	21,933
Unrealized losses, 12 months or greater	(4,979)	(6,821)
Fair Value	25,966	23,800
Unrealized Losses	(4,996)	(6,847)
Contractual Maturities
Under 1 Year	103,106
1 to 5 Years	13,993
Over 5 Years	14,288
Total	131,387	28,514
Asset-backed securities
Marketable Securities [Line Items]
Amortized Cost	34,334	24,298
Gross Unrealized Gains	83	69
Gross Unrealized Losses	(1,147)	(1,281)
Fair Value	33,270	23,086
Fair value, less than 12 months	5,579	2,225
Unrealized losses, less than 12 months	(39)	(17)
Fair value, 12 months or greater	13,188	14,881
Unrealized losses, 12 months or greater	(1,108)	(1,264)
Fair Value	18,767	17,106
Unrealized Losses	(1,147)	(1,281)
Contractual Maturities
Under 1 Year	1,330
1 to 5 Years	14,257
Over 5 Years	17,683
Total	33,270	23,086
Collateralized loan obligations
Marketable Securities [Line Items]
Amortized Cost	35,340	39,628
Gross Unrealized Gains	41	83
Gross Unrealized Losses	(371)	(1,335)
Fair Value	35,010	38,376
Fair value, less than 12 months	4,042	5,032
Unrealized losses, less than 12 months	(30)	(63)
Fair value, 12 months or greater	8,441	29,445
Unrealized losses, 12 months or greater	(341)	(1,272)
Fair Value	12,483	34,477
Unrealized Losses	(371)	(1,335)
Contractual Maturities
Under 1 Year	0
1 to 5 Years	150
Over 5 Years	34,860
Total	35,010	38,376
Bank notes
Marketable Securities [Line Items]
Amortized Cost	8,625	9,118
Gross Unrealized Gains	51	0
Gross Unrealized Losses	(170)	(204)
Fair Value	8,506	8,914
Fair value, less than 12 months	4,047	8,396
Unrealized losses, less than 12 months	(55)	(164)
Fair value, 12 months or greater	1,484	519
Unrealized losses, 12 months or greater	(115)	(40)
Fair Value	5,531	8,915
Unrealized Losses	(170)	(204)
Contractual Maturities
Under 1 Year	0
1 to 5 Years	4,448
Over 5 Years	4,058
Total	8,506	8,914
Derivatives
Marketable Securities [Line Items]
Amortized Cost	320	233
Gross Unrealized Gains	1,113	1,026
Gross Unrealized Losses	(95)	(745)
Fair Value	1,338	514
Contractual Maturities
Total	1,338	514
Equity securities
Marketable Securities [Line Items]
Amortized Cost	80,914	161,677
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7,055)	(14,866)
Fair Value	73,859	146,811
Contractual Maturities
Total	73,859	146,811
Other investments measured at net asset value
Marketable Securities [Line Items]
Amortized Cost	1,000	1,000
Gross Unrealized Gains	215	80
Gross Unrealized Losses	0	0
Fair Value	1,215	1,080
Contractual Maturities
Total	$ 1,215	$ 1,080

Short-Term Investments - Narrat

Short-Term Investments - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) position	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) position	Jun. 30, 2023 USD ($)	Dec. 31, 2023 position
Short-Term Investments [Abstract]
Number of unrealized losses from debt and equity securities generated	425		425		394
Number of unrealized losses from debt and equity securities	567		567		502
Unrealized gain (loss) on equity securities | $	$ 3.4	$ (1.5)	$ 8.5	$ (0.5)

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Measurements
Restricted cash	$ 17,250	$ 17,250
Short-term investments	745,609	755,224
Recurring basis
Fair Value Measurements
Cash equivalents	348,818	99,965
Restricted cash	17,250	17,250
Short-term investments	745,609	755,224
Equity securities	73,859	146,811
Other investments measured at net asset value	1,215	1,080
Assets held-for-sale	1,072	1,135
Total assets measured at fair value	1,115,244	875,643
Recurring basis | Fuel derivative contracts
Fair Value Measurements
Fuel derivative contracts	2,495	2,069
Recurring basis | Level 1
Fair Value Measurements
Cash equivalents	344,273	99,279
Restricted cash	17,250	17,250
Short-term investments	72,920	146,031
Equity securities	72,920	146,031
Other investments measured at net asset value	0	0
Assets held-for-sale	0	0
Total assets measured at fair value	434,443	262,560
Recurring basis | Level 1 | Fuel derivative contracts
Fair Value Measurements
Fuel derivative contracts	0	0
Recurring basis | Level 2
Fair Value Measurements
Cash equivalents	4,545	686
Restricted cash	0	0
Short-term investments	651,757	588,451
Equity securities	939	780
Other investments measured at net asset value	0	0
Assets held-for-sale	0	0
Total assets measured at fair value	658,797	591,206
Recurring basis | Level 2 | Fuel derivative contracts
Fair Value Measurements
Fuel derivative contracts	2,495	2,069
Recurring basis | Level 3
Fair Value Measurements
Cash equivalents	0	0
Restricted cash	0	0
Short-term investments	19,717	19,662
Equity securities	0	0
Other investments measured at net asset value	0	0
Assets held-for-sale	1,072	1,135
Total assets measured at fair value	20,789	20,797
Recurring basis | Level 3 | Fuel derivative contracts
Fair Value Measurements
Fuel derivative contracts	0	0
Recurring basis | Debt securities
Fair Value Measurements
Short-term investments	669,197	606,819
Recurring basis | Debt securities | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Debt securities | Level 2
Fair Value Measurements
Short-term investments	649,480	587,157
Recurring basis | Debt securities | Level 3
Fair Value Measurements
Short-term investments	19,717	19,662
Recurring basis | Corporate debt securities
Fair Value Measurements
Short-term investments	194,723	207,500
Recurring basis | Corporate debt securities | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Corporate debt securities | Level 2
Fair Value Measurements
Short-term investments	190,172	202,873
Recurring basis | Corporate debt securities | Level 3
Fair Value Measurements
Short-term investments	4,551	4,627
Recurring basis | U.S. government and agency securities
Fair Value Measurements
Short-term investments	266,301	300,429
Recurring basis | U.S. government and agency securities | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | U.S. government and agency securities | Level 2
Fair Value Measurements
Short-term investments	266,301	300,429
Recurring basis | U.S. government and agency securities | Level 3
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Other fixed income securities
Fair Value Measurements
Short-term investments	131,387	28,514
Recurring basis | Other fixed income securities | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Other fixed income securities | Level 2
Fair Value Measurements
Short-term investments	131,387	28,514
Recurring basis | Other fixed income securities | Level 3
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Asset-backed securities
Fair Value Measurements
Short-term investments	33,270	23,086
Recurring basis | Asset-backed securities | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Asset-backed securities | Level 2
Fair Value Measurements
Short-term investments	25,516	15,172
Recurring basis | Asset-backed securities | Level 3
Fair Value Measurements
Short-term investments	7,754	7,914
Recurring basis | Collateralized loan obligations
Fair Value Measurements
Short-term investments	35,010	38,376
Recurring basis | Collateralized loan obligations | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Collateralized loan obligations | Level 2
Fair Value Measurements
Short-term investments	34,394	38,123
Recurring basis | Collateralized loan obligations | Level 3
Fair Value Measurements
Short-term investments	616	253
Recurring basis | Bank notes
Fair Value Measurements
Short-term investments	8,506	8,914
Recurring basis | Bank notes | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Bank notes | Level 2
Fair Value Measurements
Short-term investments	1,710	2,046
Recurring basis | Bank notes | Level 3
Fair Value Measurements
Short-term investments	6,796	6,868
Recurring basis | Derivatives
Fair Value Measurements
Short-term investments	1,338	514
Recurring basis | Derivatives | Level 1
Fair Value Measurements
Short-term investments	0	0
Recurring basis | Derivatives | Level 2
Fair Value Measurements
Short-term investments	1,338	514
Recurring basis | Derivatives | Level 3
Fair Value Measurements
Short-term investments	$ 0	$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) $ in Millions	Jun. 30, 2024 USD ($)
Fair Value Disclosures [Abstract]
Restricted cash	$ 17.3

Fair Value Measurements - Sch_2

Fair Value Measurements - Schedule of Reconciliation of Short Term Investments and Assets Held for Sale Measured at Fair Value on a Recurring Basis Unobservable Input (Details) - Short-term Investments - Recurring basis - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 19,662	$ 29,190
Purchases	363	944
Sale of investments	(10)	(2,189)
Redemptions and paydowns	(216)	(402)
Amortization and accretion, net	27	37
Realized and unrealized gains (losses), net	(109)	(232)
Ending balance	19,717	27,348
Asset-Backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	7,914	9,033
Purchases	0	0
Sale of investments	0	0
Redemptions and paydowns	(80)	(49)
Amortization and accretion, net	30	32
Realized and unrealized gains (losses), net	(110)	(146)
Ending balance	7,754	8,870
Bank Notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	6,868	9,426
Purchases	0	944
Sale of investments	0	(2,189)
Redemptions and paydowns	(136)	(341)
Amortization and accretion, net	(1)	2
Realized and unrealized gains (losses), net	65	65
Ending balance	6,796	7,907
Collateralized Loan Obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	253	2,558
Purchases	363	0
Sale of investments	0	0
Redemptions and paydowns	0	0
Amortization and accretion, net	0	0
Realized and unrealized gains (losses), net	0	(130)
Ending balance	616	2,428
Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	4,627	8,173
Purchases	0	0
Sale of investments	(10)	0
Redemptions and paydowns	0	(12)
Amortization and accretion, net	(2)	3
Realized and unrealized gains (losses), net	(64)	(21)
Ending balance	$ 4,551	$ 8,143

Fair Value Measurements - Sch_3

Fair Value Measurements - Schedule of Debt (Excluding Obligations Under Capital Leases) Measured at Fair Value (Details) - Recurring basis - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Measurements
Carrying Amount	$ 2,199,953	$ 1,581,009
Fair Value	2,068,918	1,406,721
Level 1
Fair Value Measurements
Fair Value	0	0
Level 2
Fair Value Measurements
Fair Value	0	0
Level 3
Fair Value Measurements
Fair Value	$ 2,068,918	$ 1,406,721

Financial Derivative Instrume_3

Financial Derivative Instruments - Schedule of Realized and Unrealized Gains and Losses Recorded as Nonoperating Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative instrument
Losses on fuel derivatives recorded as Nonoperating Expense	$ (1,863)	$ (3,658)	$ (2,445)	$ (8,724)
Not Designated as Hedging Instrument | Commodity Contract
Derivative instrument
Losses realized at settlement	(1,954)	(2,795)	(4,352)	(4,308)
Reversal of prior period unrealized amounts	2,520	6,192	4,335	2,639
Unrealized losses that will settle in future periods	(2,429)	(7,055)	(2,428)	(7,055)
Losses on fuel derivatives recorded as Nonoperating Expense	$ (1,863)	$ (3,658)	$ (2,445)	$ (8,724)

Financial Derivative Instrume_4

Financial Derivative Instruments - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Derivative instrument
Net derivative position	$ 3,800,000		$ 3,800,000		$ 2,600,000
Collateral posted with counterparties	0		0		0
Derivatives
Derivative instrument
Net asset position	1,300,000		1,300,000		$ 500,000
Unrealized gain (loss)	$ 200,000	$ (1,000,000)	$ 800,000	$ (1,000,000)

Financial Derivative Instrume_5

Financial Derivative Instruments - Schedule of Fair Value of the Asset and Liability Derivatives and Net Derivative Positions (Details) € in Thousands, gal in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) gal	Dec. 31, 2023 USD ($) gal	Jun. 30, 2024 EUR (€)	Dec. 31, 2023 EUR (€)
Fair Value of Derivatives
Net derivative position	$ 3,800	$ 2,600
Not Designated as Hedging Instrument | Commodity Contract
Fair Value of Derivatives
Notional amount (in gallons) | gal	95,802	90,258
Gross fair value of assets, current	$ 2,495	$ 2,069
Gross fair value of (liabilities), current	0	0
Net derivative position	2,495	2,069
Not Designated as Hedging Instrument | Foreign currency derivatives
Fair Value of Derivatives
Derivative, notional amount | €			€ 37,627	€ 38,385
Gross fair value of assets, current	1,023	543
Gross fair value of (liabilities), current	(22)	(569)
Net derivative position	1,001	(26)
Not Designated as Hedging Instrument | Interest rate contracts
Fair Value of Derivatives
Derivative, notional amount	52,867	16,110
Gross fair value of assets, current	433	797
Gross fair value of (liabilities), current	(96)	(257)
Net derivative position	$ 337	$ 540

Debt - Schedule of Long-Term De

Debt - Schedule of Long-Term Debt (Details) $ in Thousands	1 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) loan agreement aircraft	Apr. 30, 2024 USD ($)	Jun. 30, 2024 USD ($) aircraft	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 2,226,609		$ 2,226,609
Unamortized debt discount and issuance costs	(26,656)		(26,656)	$ (20,703)
Total Debt	2,199,953		2,199,953	1,581,009
Less: Current maturities of long-term debt	(131,824)		(131,824)	(43,857)
Long-Term Debt, less discount	$ 2,068,129		$ 2,068,129	$ 1,537,152
A321neo aircraft
Debt Instrument [Line Items]
Number of aircraft | aircraft	10
Enhanced Equipment Trust Certificates (EETC) | Class A EETC-13
Debt Instrument [Line Items]
Interest rate	3.90%		3.90%	3.90%
Long-term debt	$ 153,067		$ 153,067	$ 162,953
1.05% Japanese Yen Denominated Debt Due May 2030
Debt Instrument [Line Items]
Interest rate	1.05%		1.05%	1.05%
Long-term debt	$ 15,456		$ 15,456	$ 19,050
1.01% Japanese Yen Denominated Debt Due June 2030
Debt Instrument [Line Items]
Interest rate	1.01%		1.01%	1.01%
Long-term debt	$ 13,267		$ 13,267	$ 16,394
0.65% Japanese Yen Denominated Debt Due March 2025
Debt Instrument [Line Items]
Interest rate	0.65%		0.65%	0.65%
Long-term debt	$ 33,096		$ 33,096	$ 45,107
0.76% Japanese Yen Denominated Debt Due September 2031
Debt Instrument [Line Items]
Interest rate	0.76%		0.76%	0.76%
Long-term debt	$ 38,065		$ 38,065	$ 46,225
Payroll Support Program
Debt Instrument [Line Items]
Interest rate	1%		1%	1%
Margin			2%	2%
Long-term debt	$ 60,278		$ 60,278	$ 60,278
Payroll Support Program Extension
Debt Instrument [Line Items]
Interest rate	1%		1%	1%
Margin			2%	2%
Long-term debt	$ 27,797		$ 27,797	$ 27,797
Payroll Support Program 3
Debt Instrument [Line Items]
Interest rate	1%		1%	1%
Margin			2%	2%
Long-term debt	$ 23,908		$ 23,908	$ 23,908
Financing Lease Variable interest Rate
Debt Instrument [Line Items]
Margin			3.85%
Long-term debt	129,175		$ 129,175	0
Senior and Junior Loans | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Total principal sum of note		$ 130,000
Long-term debt	130,000		130,000	0
Loan Agreements | A321neo aircraft
Debt Instrument [Line Items]
Margin		3.20%
Total principal sum of note	$ 402,500		$ 402,500
Number of aircraft | aircraft			10
Number of loan agreements | agreement	10
Long-term debt	$ 402,500		$ 402,500	$ 0
Loan Agreements | A321neo aircraft | Minimum
Debt Instrument [Line Items]
Interest rate	7.25%		7.25%
Loan Agreements | A321neo aircraft | Maximum
Debt Instrument [Line Items]
Interest rate	7.50%		7.50%
Loan Agreements | A321neo aircraft | Variable Rate
Debt Instrument [Line Items]
Number of loan agreements | loan	5
Loan Agreements | A321neo aircraft | Fixed Rate
Debt Instrument [Line Items]
Number of loan agreements | loan	5
Senior Loans | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Margin		3.50%	3.50%
Total principal sum of note	$ 115,000	$ 115,000	$ 115,000
Senior Loans | 5.75% Senior Secured Notes
Debt Instrument [Line Items]
Interest rate	5.75%		5.75%	5.75%
Long-term debt	$ 1,200,000		$ 1,200,000	$ 1,200,000
Junior Loans | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Total principal sum of note	$ 15,000	$ 15,000	$ 15,000
Fixed interest rate	10.4934%	10.4934%	10.4934%

Debt - Narrative (Details)

Debt - Narrative (Details)	1 Months Ended				6 Months Ended
	Jun. 30, 2024 USD ($) loan agreement aircraft	Apr. 30, 2024 USD ($)	Feb. 29, 2024 USD ($)	Aug. 31, 2022 USD ($)	Jun. 30, 2024 USD ($) aircraft	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 2,226,609,000				$ 2,226,609,000
A321neo aircraft
Debt Instrument [Line Items]
Number of aircraft | aircraft	10
Line of credit | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Long-term debt			$ 131,400,000
Term of debt instrument			10 years
Line of credit | SOFR | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)			3.85%
Senior and Junior Loans | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Long-term debt	$ 130,000,000				$ 130,000,000	$ 0
Total principal sum of note		$ 130,000,000
Senior Loans | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)		3.50%			3.50%
Term of debt instrument		10 years
Total principal sum of note	115,000,000	$ 115,000,000			$ 115,000,000
Senior Loans | 5.75% Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,200,000,000				$ 1,200,000,000	$ 1,200,000,000
Interest rate	5.75%				5.75%	5.75%
Senior Loans | 11.0% Senior Secured Notes
Debt Instrument [Line Items]
Total principal sum of note	$ 984,800,000				$ 984,800,000
Interest rate	11%				11%
Junior Loans | Boeing 787-9 aircraft
Debt Instrument [Line Items]
Term of debt instrument		5 years
Total principal sum of note	$ 15,000,000	$ 15,000,000			$ 15,000,000
Fixed interest rate	10.4934%	10.4934%			10.4934%
Loan Agreements | A321neo aircraft
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)		3.20%
Long-term debt	$ 402,500,000				$ 402,500,000	$ 0
Term of debt instrument	8 years
Total principal sum of note	$ 402,500,000				$ 402,500,000
Number of loan agreements | agreement	10
Number of aircraft | aircraft					10
Loan Agreements | A321neo aircraft | Minimum
Debt Instrument [Line Items]
Interest rate	7.25%				7.25%
Loan Agreements | A321neo aircraft | Maximum
Debt Instrument [Line Items]
Interest rate	7.50%				7.50%
Loan Agreements | A321neo aircraft | Variable Rate
Debt Instrument [Line Items]
Number of loan agreements | loan	5
Loan Agreements | A321neo aircraft | Fixed Rate
Debt Instrument [Line Items]
Number of loan agreements | loan	5
Revolving credit facility | Line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 235,000,000
Outstanding borrowings	$ 0				$ 0
Revolving credit facility | Line of credit | SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)				3%
Revolving credit facility | Line of credit | Alternate Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)				2%

Debt - Schedule of Maturities o

Debt - Schedule of Maturities of Long-Term Debt (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Debt Disclosure [Abstract]
Remaining months in 2024	$ 57,191
2025	125,947
2026	1,411,554
2027	84,902
2028	85,846
Thereafter	461,169
Long-term debt	$ 2,226,609

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Components of Net Period Benefit Cost
Service cost	$ 2,514,000	$ 1,791,000	$ 5,028,000	$ 3,420,000
Other cost:
Interest cost	6,307,000	6,513,000	12,614,000	12,943,000
Expected return on plan assets	(5,843,000)	(5,529,000)	(11,686,000)	(11,060,000)
Recognized net actuarial loss	463,000	723,000	926,000	1,318,000
Total other components of the net periodic benefit cost	927,000	1,707,000	1,854,000	3,201,000
Net periodic benefit cost	3,441,000	3,498,000	6,882,000	6,621,000
Contribution to defined benefit and other postretirement plans	$ 0	$ 0	$ 0	$ 0

Amazon Agreement (Details)

Amazon Agreement (Details) $ / shares in Units, $ in Thousands	Oct. 20, 2022 USD ($) aircraft $ / shares shares	Jun. 30, 2024 USD ($) tranche $ / shares shares	Dec. 31, 2023 USD ($) $ / shares	Jun. 30, 2023 $ / shares shares	Dec. 31, 2022 $ / shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Noncurrent frequent flyer deferred revenue		$ 296,336	$ 308,502
Common stock, par value (in dollars per share) | $ / shares		$ 0.01	$ 0.01	$ 0.01	$ 0.01
Amazon.com Services LLC
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Services agreement term	8 years
Customer extension term	2 years
Additional extension term	3 years
Number of aircraft, authorized for initial operation | aircraft	10
Noncurrent frequent flyer deferred revenue	$ 11,500
Warrants issued (in shares) | shares	9,442,443	8,142,534		8,183,451
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Aggregate qualified payments	$ 1,800,000
Number of tranches | tranche		2
Estimated pro rata contra revenue earned	$ 11,600
Amazon.com Services LLC | Warrant
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrants vested (in shares) | shares	1,258,992
Warrant shares, valued	$ 11,600
Amazon.com Services LLC | Tranche 1
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrants issued (in shares) | shares	6,294,962
Exercise price of warrants (in dollars per share) | $ / shares	$ 14.71	$ 9.19
Revenue over the vesting period		$ 57,900
Amazon.com Services LLC | Tranche 1 | Warrant
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrants vested (in shares) | shares	1,258,992
Warrant shares, valued	$ 11,600
Amazon.com Services LLC | Tranche 2
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrants issued (in shares) | shares	3,147,481
Exercise price of warrants (in dollars per share) | $ / shares		$ 8.25
Redemption of warrants trading days	30 days
Revenue over the vesting period		$ 26,000

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Schedule of Firm Aircraft and Engine Orders and Purchase Rights (Details) - Aircraft and Aircraft Related	6 Months Ended
	Jun. 30, 2024 order purchaseRight
Boeing 787-9 spare engines
Long-term Purchase Commitment [Line Items]
Firm Orders | order	2
Purchase Rights | purchaseRight	1
A321neo aircraft
Long-term Purchase Commitment [Line Items]
Firm Orders | order	0
Purchase Rights | purchaseRight	9
Boeing 787-9 aircraft
Long-term Purchase Commitment [Line Items]
Firm Orders | order	10
Purchase Rights | purchaseRight	8

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Narrative (Details)	1 Months Ended
	Apr. 30, 2024 USD ($)	Dec. 31, 2022 aircraft	Oct. 31, 2018 engine	Jul. 31, 2018 aircraft	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Long-term Purchase Commitment [Line Items]
Long-term debt					$ 2,226,609,000
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	SOFR
Senior Note Due April 2034 | Senior Loans
Long-term Purchase Commitment [Line Items]
Long-term debt	$ 115,000,000
Margin	3.50%
Senior Note Due April 2029 | Junior Loans
Long-term Purchase Commitment [Line Items]
Long-term debt	$ 15,000,000
Interest rate	10.4934%
Credit card processing agreements
Long-term Purchase Commitment [Line Items]
Restricted cash					$ 0	$ 0
Maximum amount that holdback could increase					100%
Boeing 787-9 aircraft
Long-term Purchase Commitment [Line Items]
Number of aircraft under purchase agreements | aircraft				10
Number of aircraft with purchase rights | aircraft				10
Number of aircraft under supplemental agreement | aircraft		2
Boeing 787-9 aircraft | General Electric GEnx engines
Long-term Purchase Commitment [Line Items]
Number of engines, firm order | engine			20
Number of engines, purchase rights | engine			20
Boeing 787-9 aircraft | General Electric GEnx spare engines
Long-term Purchase Commitment [Line Items]
Number of spare engine purchase rights | engine			4

Commitments and Contingent Li_5

Commitments and Contingent Liabilities - Schedule of Gross Committed Expenditures and Committed Payments (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Total Committed Expenditures
Remaining in 2024	$ 86,933
2025	585,680
2026	679,484
2027	261,498
2028	3,311
Thereafter	58,285
Total	1,675,191
Aircraft and Aircraft Related
Total Committed Expenditures
Remaining in 2024	72,992
2025	563,736
2026	667,219
2027	253,228
2028	0
Thereafter	0
Total	1,557,175
Other
Total Committed Expenditures
Remaining in 2024	13,941
2025	21,944
2026	12,265
2027	8,270
2028	3,311
Thereafter	58,285
Total	$ 118,016

Assets Held-For-Sale - Narrativ

Assets Held-For-Sale - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2023	Dec. 31, 2021	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held-for-sale			$ 1,072	$ 1,135
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held-for-sale		$ 29,500
Assets held-for-sale			1,072	1,135	$ 2,845	$ 14,019
Held-for-sale | 'Ohana by Hawaiian
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write-down of fleet		6,400
Assets held-for-sale		23,400
Held-for-sale | Commercial Real Estate
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held-for-sale		$ 6,300	$ 0	$ 0	$ 0	$ 6,291
Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of aircraft	$ 10,200

Assets Held-For-Sale - Schedule

Assets Held-For-Sale - Schedule of Assets Held For Sale Activity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Disposal Groups, Including Discontinued Operations, Assets [Roll Forward]
Beginning balance	$ 1,135
Ending balance	1,072
Held-for-sale
Disposal Groups, Including Discontinued Operations, Assets [Roll Forward]
Beginning balance	1,135	$ 14,019
Additions	0	0
Proceeds from sale	(130)	(21,016)
Realized gains	67	10,255
Realized losses	0	(413)
Ending balance	1,072	2,845
Held-for-sale | ATR Aircraft
Disposal Groups, Including Discontinued Operations, Assets [Roll Forward]
Beginning balance	1,135	7,728
Additions	0	0
Proceeds from sale	(130)	(4,546)
Realized gains	67	76
Realized losses	0	(413)
Ending balance	1,072	2,845
Held-for-sale | Commercial Real Estate
Disposal Groups, Including Discontinued Operations, Assets [Roll Forward]
Beginning balance	0	6,291
Additions	0	0
Proceeds from sale	0	(16,470)
Realized gains	0	10,179
Realized losses	0	0
Ending balance	$ 0	$ 0

Condensed Consolidating Finan_3

Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statements of Operations and Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Operating Revenue	$ 731,905		$ 706,928		$ 1,377,472	$ 1,319,531
Operating Expenses:
Wages and benefits	265,024		237,680		526,959	479,613
Aircraft fuel, including taxes and delivery	179,153		166,380		367,931	364,005
Maintenance, materials and repairs	69,897		53,657		140,868	103,943
Aircraft and passenger servicing	47,854		43,126		93,278	85,658
Commissions and other selling	29,068		28,391		57,511	56,630
Aircraft rent	29,891		26,159		59,597	54,330
Other rentals and landing fees	45,011		41,487		88,138	80,207
Depreciation and amortization	35,068		33,348		68,035	66,015
Purchased services	39,025		37,181		77,500	72,254
Special items	6,497		0		14,979	0
Other	40,804		49,099		86,709	83,884
Total	787,292		716,508		1,581,505	1,446,539
Operating Loss	(55,387)		(9,580)		(204,033)	(127,008)
Nonoperating Income (Expense):
Undistributed net loss of subsidiaries	0		0		0	0
Interest expense and amortization of debt discounts and issuance costs	(28,324)		(22,705)		(52,393)	(45,585)
Interest income	11,134		13,539		21,155	30,004
Capitalized interest	2,541		1,945		5,675	3,404
Losses on fuel derivatives	(1,863)		(3,658)		(2,445)	(8,724)
Loss on extinguishment of debt					0	0
Other components of net periodic pension cost	(927)		(1,707)		(1,854)	(3,201)
Gains (Losses) on Investments, net	(654)		(3,549)		(184)	(2,852)
Gains on foreign debt	6,470		12,174		14,989	14,434
Other, net	(584)		(920)		(1,354)	(764)
Total	(12,207)		(4,881)		(16,411)	(13,284)
Loss Before Income Taxes	(67,594)		(14,461)		(220,444)	(140,292)
Income tax benefit	0		(2,126)		(15,285)	(29,700)
Net Loss	(67,594)	$ (137,565)	(12,335)	$ (98,257)	(205,159)	(110,592)
Comprehensive Loss	(66,751)		(11,808)		(203,199)	(112,117)
Eliminations
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Operating Revenue	(13,917)		(14,050)		(27,724)	(27,521)
Operating Expenses:
Wages and benefits	0		0		0	0
Aircraft fuel, including taxes and delivery	0		0		0	0
Maintenance, materials and repairs	0		0		0	0
Aircraft and passenger servicing	0		0		0	0
Commissions and other selling	(79)		(83)		(168)	(230)
Aircraft rent	0		0		0	0
Other rentals and landing fees	0		0		0	(19)
Depreciation and amortization	0		0		0	0
Purchased services	(66)		(66)		(131)	(131)
Special items	0				0
Other	(13,772)		(13,901)		(27,425)	(27,141)
Total	(13,917)		(14,050)		(27,724)	(27,521)
Operating Loss	0		0		0	0
Nonoperating Income (Expense):
Undistributed net loss of subsidiaries	70,325		14,792		209,989	116,318
Interest expense and amortization of debt discounts and issuance costs	746		748		1,492	1,488
Interest income	(746)		(748)		(1,492)	(1,488)
Capitalized interest	0		0		0	0
Losses on fuel derivatives	0		0		0	0
Loss on extinguishment of debt					0	0
Other components of net periodic pension cost	0		0		0	0
Gains (Losses) on Investments, net	0		0		0	0
Gains on foreign debt	0		0		0	0
Other, net	0		0		0	0
Total	70,325		14,792		209,989	116,318
Loss Before Income Taxes	70,325		14,792		209,989	116,318
Income tax benefit	0		0		0	0
Net Loss	70,325		14,792		209,989	116,318
Comprehensive Loss	69,478		14,266		208,027	117,846
Parent Issuer / Guarantor | Reportable legal entities
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Operating Revenue	0		0		0	0
Operating Expenses:
Wages and benefits	0		0		0	0
Aircraft fuel, including taxes and delivery	0		0		0	0
Maintenance, materials and repairs	0		0		0	0
Aircraft and passenger servicing	0		0		0	0
Commissions and other selling	1		9		11	18
Aircraft rent	0		0		0	0
Other rentals and landing fees	0		0		0	0
Depreciation and amortization	0		0		0	0
Purchased services	50		52		170	171
Special items	0				0
Other	1,580		1,798		3,930	3,627
Total	1,631		1,859		4,111	3,816
Operating Loss	(1,631)		(1,859)		(4,111)	(3,816)
Nonoperating Income (Expense):
Undistributed net loss of subsidiaries	(66,077)		(10,620)		(201,269)	(107,316)
Interest expense and amortization of debt discounts and issuance costs	0		0		0	0
Interest income	110		145		219	543
Capitalized interest	0		0		0	0
Losses on fuel derivatives	0		0		0	0
Loss on extinguishment of debt					0	0
Other components of net periodic pension cost	0		0		0	0
Gains (Losses) on Investments, net	0		0		0	0
Gains on foreign debt	0		0		0	0
Other, net	0		0		0	0
Total	(65,967)		(10,475)		(201,050)	(106,773)
Loss Before Income Taxes	(67,598)		(12,334)		(205,161)	(110,589)
Income tax benefit	0		0		0	0
Net Loss	(67,598)		(12,334)		(205,161)	(110,589)
Comprehensive Loss	(66,751)		(11,808)		(203,199)	(112,117)
Subsidiary Issuer / Guarantor | Reportable legal entities
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Operating Revenue	731,963		707,032		1,377,554	1,318,830
Operating Expenses:
Wages and benefits	265,024		237,680		526,959	479,613
Aircraft fuel, including taxes and delivery	179,153		166,380		367,931	364,005
Maintenance, materials and repairs	69,897		53,657		140,868	103,974
Aircraft and passenger servicing	47,854		43,126		93,278	85,658
Commissions and other selling	29,069		28,407		57,559	56,561
Aircraft rent	29,891		26,159		59,597	54,330
Other rentals and landing fees	45,011		41,487		88,138	80,226
Depreciation and amortization	35,068		33,348		68,035	66,015
Purchased services	38,948		37,089		77,275	71,540
Special items	6,497				14,979
Other	52,450		60,126		109,021	115,690
Total	798,862		727,459		1,603,640	1,477,612
Operating Loss	(66,899)		(20,427)		(226,086)	(158,782)
Nonoperating Income (Expense):
Undistributed net loss of subsidiaries	(4,248)		(4,172)		(8,720)	(9,002)
Interest expense and amortization of debt discounts and issuance costs	(10,563)		(4,966)		(16,877)	(10,114)
Interest income	10,583		12,863		20,030	28,405
Capitalized interest	2,541		1,945		5,675	3,404
Losses on fuel derivatives	(1,863)		(3,658)		(2,445)	(8,724)
Loss on extinguishment of debt					0	0
Other components of net periodic pension cost	(927)		(1,707)		(1,854)	(3,201)
Gains (Losses) on Investments, net	(654)		(3,549)		(184)	(2,852)
Gains on foreign debt	6,470		12,174		14,989	14,434
Other, net	(584)		(920)		(1,354)	(764)
Total	755		8,010		9,260	11,586
Loss Before Income Taxes	(66,144)		(12,417)		(216,826)	(147,196)
Income tax benefit	0		(2,126)		(15,285)	(29,700)
Net Loss	(66,144)		(10,291)		(201,541)	(117,496)
Comprehensive Loss	(65,301)		(9,764)		(199,581)	(119,021)
Non-Guarantor Subsidiaries | Reportable legal entities
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Operating Revenue	13,859		13,946		27,642	28,222
Operating Expenses:
Wages and benefits	0		0		0	0
Aircraft fuel, including taxes and delivery	0		0		0	0
Maintenance, materials and repairs	0		0		0	(31)
Aircraft and passenger servicing	0		0		0	0
Commissions and other selling	77		58		109	281
Aircraft rent	0		0		0	0
Other rentals and landing fees	0		0		0	0
Depreciation and amortization	0		0		0	0
Purchased services	93		106		186	674
Special items	0				0
Other	546		1,076		1,183	(8,292)
Total	716		1,240		1,478	(7,368)
Operating Loss	13,143		12,706		26,164	35,590
Nonoperating Income (Expense):
Undistributed net loss of subsidiaries	0		0		0	0
Interest expense and amortization of debt discounts and issuance costs	(18,507)		(18,487)		(37,008)	(36,959)
Interest income	1,187		1,279		2,398	2,544
Capitalized interest	0		0		0	0
Losses on fuel derivatives	0		0		0	0
Loss on extinguishment of debt					0	0
Other components of net periodic pension cost	0		0		0	0
Gains (Losses) on Investments, net	0		0		0	0
Gains on foreign debt	0		0		0	0
Other, net	0		0		0	0
Total	(17,320)		(17,208)		(34,610)	(34,415)
Loss Before Income Taxes	(4,177)		(4,502)		(8,446)	1,175
Income tax benefit	0		0		0	0
Net Loss	(4,177)		(4,502)		(8,446)	1,175
Comprehensive Loss	$ (4,177)		$ (4,502)		$ (8,446)	$ 1,175

Condensed Consolidating Finan_4

Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 510,463		$ 153,273
Restricted cash	17,250		17,250
Short-term investments	745,609		755,224
Accounts receivable, net	110,835		105,858
Income taxes receivable	2,719		669
Spare parts and supplies, net	70,627		60,115
Prepaid expenses and other	79,403		78,551
Total	1,536,906		1,170,940
Property and equipment at cost	3,392,362		3,164,145
Less accumulated depreciation and amortization	(1,192,373)		(1,150,529)
Property and equipment, net	2,199,989		2,013,616
Assets held-for-sale	1,072		1,135
Operating lease right-of-use assets	371,519		413,237
Long-term prepayments and other	119,771		121,097
Goodwill and other intangible assets, net	13,500		13,500
Intercompany receivable	0		0
Investment in consolidated subsidiaries	0		0
Total Assets	4,242,757		3,733,525
Current Liabilities:
Accounts payable	200,837		199,223
Air traffic liability and current frequent flyer deferred revenue	793,010		633,345
Other accrued liabilities	172,735		175,591
Current maturities of long-term debt, less discount	131,824		43,857
Current maturities of finance lease obligations	8,883		10,053
Current maturities of operating leases	74,640		83,332
Total	1,381,929		1,145,401
Long-Term Debt	2,068,129		1,537,152
Intercompany payable	0		0
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	54,012		60,116
Noncurrent operating leases	267,103		303,119
Accumulated pension and other post-retirement benefit obligations	144,011		140,742
Other liabilities and deferred credits	83,705		77,154
Noncurrent frequent flyer deferred revenue	296,336		308,502
Deferred tax liabilities, net	53,024		65,914
Total	898,191		955,547
Shareholders’ equity	(105,492)	$ (40,221)	95,425	$ 223,817	$ 233,320	$ 333,265
Total Liabilities and Shareholders’ Equity	4,242,757		3,733,525
Eliminations
Current Assets:
Cash and cash equivalents	0		0
Restricted cash	0		0
Short-term investments	0		0
Accounts receivable, net	(24,753)		(23,327)
Income taxes receivable	0		0
Spare parts and supplies, net	0		0
Prepaid expenses and other	0		0
Total	(24,753)		(23,327)
Property and equipment at cost	0		0
Less accumulated depreciation and amortization	0		0
Property and equipment, net	0		0
Assets held-for-sale	0		0
Operating lease right-of-use assets	0		0
Long-term prepayments and other	(1,200,000)		(1,200,000)
Goodwill and other intangible assets, net	0		0
Intercompany receivable	845,543		635,552
Investment in consolidated subsidiaries	(790,644)		(790,644)
Total Assets	(1,169,854)		(1,378,419)
Current Liabilities:
Accounts payable	(14,549)		(14,615)
Air traffic liability and current frequent flyer deferred revenue	0		0
Other accrued liabilities	(10,204)		(8,712)
Current maturities of long-term debt, less discount	0		0
Current maturities of finance lease obligations	0		0
Current maturities of operating leases	0		0
Total	(24,753)		(23,327)
Long-Term Debt	(1,200,000)		(1,200,000)
Intercompany payable	312,774		308,943
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	0		0
Noncurrent operating leases	0		0
Accumulated pension and other post-retirement benefit obligations	0		0
Other liabilities and deferred credits	0		0
Noncurrent frequent flyer deferred revenue	0		0
Deferred tax liabilities, net	0		0
Total	0		0
Shareholders’ equity	(257,875)		(464,035)
Total Liabilities and Shareholders’ Equity	(1,169,854)		(1,378,419)
Parent Issuer / Guarantor | Reportable legal entities
Current Assets:
Cash and cash equivalents	8,927		8,707
Restricted cash	0		0
Short-term investments	0		0
Accounts receivable, net	0		1,269
Income taxes receivable	1,269		0
Spare parts and supplies, net	0		0
Prepaid expenses and other	0		0
Total	10,196		9,976
Property and equipment at cost	0		0
Less accumulated depreciation and amortization	0		0
Property and equipment, net	0		0
Assets held-for-sale	0		0
Operating lease right-of-use assets	0		0
Long-term prepayments and other	0		0
Goodwill and other intangible assets, net	0		0
Intercompany receivable	(779,230)		(577,961)
Investment in consolidated subsidiaries	807,451		807,451
Total Assets	38,417		239,466
Current Liabilities:
Accounts payable	887		784
Air traffic liability and current frequent flyer deferred revenue	0		0
Other accrued liabilities	0		0
Current maturities of long-term debt, less discount	0		0
Current maturities of finance lease obligations	0		0
Current maturities of operating leases	0		0
Total	887		784
Long-Term Debt	0		0
Intercompany payable	143,021		143,257
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	0		0
Noncurrent operating leases	0		0
Accumulated pension and other post-retirement benefit obligations	0		0
Other liabilities and deferred credits	0		0
Noncurrent frequent flyer deferred revenue	0		0
Deferred tax liabilities, net	0		0
Total	0		0
Shareholders’ equity	(105,491)		95,425
Total Liabilities and Shareholders’ Equity	38,417		239,466
Subsidiary Issuer / Guarantor | Reportable legal entities
Current Assets:
Cash and cash equivalents	470,603		113,026
Restricted cash	0		0
Short-term investments	745,609		755,224
Accounts receivable, net	107,739		101,655
Income taxes receivable	1,450		669
Spare parts and supplies, net	70,627		60,115
Prepaid expenses and other	79,403		78,551
Total	1,475,431		1,109,240
Property and equipment at cost	3,392,362		3,164,145
Less accumulated depreciation and amortization	(1,192,373)		(1,150,529)
Property and equipment, net	2,199,989		2,013,616
Assets held-for-sale	224		262
Operating lease right-of-use assets	371,519		413,237
Long-term prepayments and other	119,771		121,097
Goodwill and other intangible assets, net	0		0
Intercompany receivable	(66,313)		(57,591)
Investment in consolidated subsidiaries	(17,310)		(17,309)
Total Assets	4,083,311		3,582,552
Current Liabilities:
Accounts payable	213,809		212,464
Air traffic liability and current frequent flyer deferred revenue	784,922		623,324
Other accrued liabilities	169,287		170,651
Current maturities of long-term debt, less discount	131,824		43,857
Current maturities of finance lease obligations	8,883		10,053
Current maturities of operating leases	74,640		83,332
Total	1,383,365		1,143,681
Long-Term Debt	2,076,095		1,547,626
Intercompany payable	(586,195)		(573,873)
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	54,012		60,116
Noncurrent operating leases	267,103		303,119
Accumulated pension and other post-retirement benefit obligations	144,011		140,742
Other liabilities and deferred credits	83,705		77,154
Noncurrent frequent flyer deferred revenue	296,336		308,502
Deferred tax liabilities, net	53,024		65,914
Total	898,191		955,547
Shareholders’ equity	311,855		509,571
Total Liabilities and Shareholders’ Equity	4,083,311		3,582,552
Non-Guarantor Subsidiaries | Reportable legal entities
Current Assets:
Cash and cash equivalents	30,933		31,540
Restricted cash	17,250		17,250
Short-term investments	0		0
Accounts receivable, net	27,849		26,261
Income taxes receivable	0		0
Spare parts and supplies, net	0		0
Prepaid expenses and other	0		0
Total	76,032		75,051
Property and equipment at cost	0		0
Less accumulated depreciation and amortization	0		0
Property and equipment, net	0		0
Assets held-for-sale	848		873
Operating lease right-of-use assets	0		0
Long-term prepayments and other	1,200,000		1,200,000
Goodwill and other intangible assets, net	13,500		13,500
Intercompany receivable	0		0
Investment in consolidated subsidiaries	503		502
Total Assets	1,290,883		1,289,926
Current Liabilities:
Accounts payable	690		590
Air traffic liability and current frequent flyer deferred revenue	8,088		10,021
Other accrued liabilities	13,652		13,652
Current maturities of long-term debt, less discount	0		0
Current maturities of finance lease obligations	0		0
Current maturities of operating leases	0		0
Total	22,430		24,263
Long-Term Debt	1,192,034		1,189,526
Intercompany payable	130,400		121,673
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	0		0
Noncurrent operating leases	0		0
Accumulated pension and other post-retirement benefit obligations	0		0
Other liabilities and deferred credits	0		0
Noncurrent frequent flyer deferred revenue	0		0
Deferred tax liabilities, net	0		0
Total	0		0
Shareholders’ equity	(53,981)		(45,536)
Total Liabilities and Shareholders’ Equity	$ 1,290,883		$ 1,289,926

Condensed Consolidating Finan_5

Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Condensed Consolidating Statements of Cash Flows
Net Cash Used In Operating Activities	$ (26,868)	$ 111,662
Cash Flows From Investing Activities:
Net payments to affiliates	0	0
Additions to property and equipment, including pre-delivery deposits	(256,980)	(169,354)
Proceeds from the disposition of aircraft and aircraft related equipment	130	19,863
Purchases of investments	(232,113)	(202,037)
Proceeds from sales and maturities of investments	247,537	275,312
Net cash used in investing activities	(241,426)	(76,216)
Cash Flows From Financing Activities:
Long-term borrowings	663,900	0
Repayments of long-term debt and finance lease obligations	(28,258)	(36,142)
Debt issuance costs and discounts	(9,928)	0
Net payments from affiliates	0	0
Payment for taxes withheld for stock compensation	(230)	(1,113)
Net cash provided by (used in) financing activities	625,484	(37,255)
Net increase (decrease) in cash and cash equivalents	357,190	(1,809)
Cash, cash equivalents, and restricted cash - Beginning of Period	170,523	246,620
Cash, cash equivalents, and restricted cash - End of Period	527,713	244,811
Eliminations
Condensed Consolidating Statements of Cash Flows
Net Cash Used In Operating Activities	0	0
Cash Flows From Investing Activities:
Net payments to affiliates	3,366	(34,999)
Additions to property and equipment, including pre-delivery deposits	0	0
Proceeds from the disposition of aircraft and aircraft related equipment	0	0
Purchases of investments	0	0
Proceeds from sales and maturities of investments	0	0
Net cash used in investing activities	3,366	(34,999)
Cash Flows From Financing Activities:
Long-term borrowings	0
Repayments of long-term debt and finance lease obligations	0	0
Debt issuance costs and discounts	0
Net payments from affiliates	(3,366)	34,999
Payment for taxes withheld for stock compensation	0	0
Net cash provided by (used in) financing activities	(3,366)	34,999
Net increase (decrease) in cash and cash equivalents	0	0
Cash, cash equivalents, and restricted cash - Beginning of Period	0	0
Cash, cash equivalents, and restricted cash - End of Period	0	0
Parent Issuer / Guarantor | Reportable legal entities
Condensed Consolidating Statements of Cash Flows
Net Cash Used In Operating Activities	(3,146)	(2,337)
Cash Flows From Investing Activities:
Net payments to affiliates	0	0
Additions to property and equipment, including pre-delivery deposits	0	0
Proceeds from the disposition of aircraft and aircraft related equipment	0	15,293
Purchases of investments	0	0
Proceeds from sales and maturities of investments	0	0
Net cash used in investing activities	0	15,293
Cash Flows From Financing Activities:
Long-term borrowings	0
Repayments of long-term debt and finance lease obligations	0	0
Debt issuance costs and discounts	0
Net payments from affiliates	3,366	(34,999)
Payment for taxes withheld for stock compensation	0	0
Net cash provided by (used in) financing activities	3,366	(34,999)
Net increase (decrease) in cash and cash equivalents	220	(22,043)
Cash, cash equivalents, and restricted cash - Beginning of Period	8,707	28,620
Cash, cash equivalents, and restricted cash - End of Period	8,927	6,577
Subsidiary Issuer / Guarantor | Reportable legal entities
Condensed Consolidating Statements of Cash Flows
Net Cash Used In Operating Activities	(14,339)	122,037
Cash Flows From Investing Activities:
Net payments to affiliates	(12,095)	48,210
Additions to property and equipment, including pre-delivery deposits	(256,980)	(169,354)
Proceeds from the disposition of aircraft and aircraft related equipment	83	43
Purchases of investments	(232,113)	(202,037)
Proceeds from sales and maturities of investments	247,537	275,312
Net cash used in investing activities	(253,568)	(47,826)
Cash Flows From Financing Activities:
Long-term borrowings	663,900
Repayments of long-term debt and finance lease obligations	(28,258)	(36,142)
Debt issuance costs and discounts	(9,928)
Net payments from affiliates	0	0
Payment for taxes withheld for stock compensation	(230)	(1,113)
Net cash provided by (used in) financing activities	625,484	(37,255)
Net increase (decrease) in cash and cash equivalents	357,577	36,956
Cash, cash equivalents, and restricted cash - Beginning of Period	113,026	151,357
Cash, cash equivalents, and restricted cash - End of Period	470,603	188,313
Non-Guarantor Subsidiaries | Reportable legal entities
Condensed Consolidating Statements of Cash Flows
Net Cash Used In Operating Activities	(9,383)	(8,038)
Cash Flows From Investing Activities:
Net payments to affiliates	8,729	(13,211)
Additions to property and equipment, including pre-delivery deposits	0	0
Proceeds from the disposition of aircraft and aircraft related equipment	47	4,527
Purchases of investments	0	0
Proceeds from sales and maturities of investments	0	0
Net cash used in investing activities	8,776	(8,684)
Cash Flows From Financing Activities:
Long-term borrowings	0
Repayments of long-term debt and finance lease obligations	0	0
Debt issuance costs and discounts	0
Net payments from affiliates	0	0
Payment for taxes withheld for stock compensation	0	0
Net cash provided by (used in) financing activities	0	0
Net increase (decrease) in cash and cash equivalents	(607)	(16,722)
Cash, cash equivalents, and restricted cash - Beginning of Period	48,790	66,643
Cash, cash equivalents, and restricted cash - End of Period	$ 48,183	$ 49,921