Hawaiian (HA) 10-Q 25 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 20, 2018
Document and Entity Information
Entity Registrant Name	HAWAIIAN HOLDINGS INC
Entity Central Index Key	1,172,222
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		50,737,816

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	[1]	Jun. 30, 2018	Jun. 30, 2017	[1]
Operating Revenue:
Total	$ 715,447		$ 670,116	[2]	$ 1,380,859	$ 1,276,325	[2]
Operating Expenses:
Wages and benefits	171,555		154,660	[2]	340,264	305,713	[2]
Aircraft fuel, including taxes and delivery	153,026		102,774	[2]	286,472	206,312	[2]
Maintenance, materials and repairs	60,970		52,566	[2]	119,111	111,970	[2]
Aircraft and passenger servicing	38,626		35,636	[2]	75,144	69,926	[2]
Aircraft rent	29,865		34,553	[2]	61,765	67,688	[2]
Commissions and other selling	31,853		32,162	[2]	63,778	61,804	[2]
Other rentals and landing fees	31,184		27,438	[2]	61,999	55,774	[2]
Depreciation and amortization	32,919		27,872	[2]	65,164	55,340	[2]
Purchased services	31,474		28,055	[2]	62,595	54,692	[2]
Contract terminations expense	0		0		35,322	0
Special items	0		4,771	[2]	0	23,450	[2]
Other	41,047		32,789	[2]	80,052	64,786	[2]
Total	622,519		533,276	[2]	1,251,666	1,077,455	[2]
Operating Income	92,928		136,840	[2]	129,193	198,870	[2]
Nonoperating Income (Expense):
Interest expense and amortization of debt discounts and issuance costs	(7,627)		(7,711)	[2]	(16,182)	(15,714)	[2]
Gains (losses) on fuel derivatives	18,952		(4,712)	[2]	23,569	(13,510)	[2]
Interest income	1,931		1,467	[2]	3,405	2,619	[2]
Capitalized interest	2,355		2,082	[2]	4,593	3,842	[2]
Other, net	(2,752)		(4,317)	[2]	(1,696)	(6,240)	[2]
Total	12,859		(13,191)	[2]	13,689	(29,003)	[2]
Income Before Income Taxes	105,787		123,649	[2]	142,882	169,867	[2]
Income tax expense	26,307		46,755	[2]	34,860	59,327	[2]
Net Income (Loss)	$ 79,480		$ 76,894	[2]	$ 108,022	$ 110,540	[2]
Net Income Per Common Stock Share:
Basic (in dollars per share)	$ 1.57		$ 1.43		$ 2.12	$ 2.06
Diluted (in dollars per share)	$ 1.56		$ 1.43		$ 2.12	$ 2.05
Weighted Average Number of Common Stock Shares Outstanding:
Basic (in shares)	50,776		53,626		50,915	53,595
Diluted (in shares)	50,878		53,914		51,038	53,948
Cash Dividends Declared Per Common Stock Share (in dollars per share)	$ 0.12	$ 0.12	$ 0		$ 0.24	$ 0
Passenger
Operating Revenue:
Total	$ 655,162		$ 624,006		$ 1,266,762	$ 1,187,758
Other
Operating Revenue:
Total	$ 60,285		$ 46,110		$ 114,097	$ 88,567
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	[1]	Jun. 30, 2018	Jun. 30, 2017	[1]
Statement of Comprehensive Income [Abstract]
Net Income	$ 79,480	$ 76,894	[2]	$ 108,022	$ 110,540	[2]
Other comprehensive income, net:
Net change related to employee benefit plans, net of tax expense	514	1,390		1,027	2,858
Net change in derivative instruments, net of tax (benefit) expense	9,263	1,261		2,019	(5,836)
Net change in available-for-sale investments, net of tax (benefit) expense	167	32		(293)	118
Net current-period other comprehensive income (loss)	9,944	2,683		2,753	(2,860)
Total Comprehensive Income	$ 89,424	$ 79,577	[2]	$ 110,775	$ 107,680	[2]
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Consolidated Statements of Com4

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net change related to employee benefit plans, tax expense	$ 166	$ 897	$ 332	$ 1,794
Net change in derivative instruments, tax expense (benefit)	2,999	768	654	(3,557)
Net change in available-for-sale investments, tax expense (benefit)	$ 54	$ 20	$ (95)	$ 72

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	[1]
Current Assets:
Cash and cash equivalents	$ 333,791	$ 190,953	[2]
Restricted cash	1,000	1,000	[2]
Short-term investments	259,313	269,297	[2]
Accounts receivable, net	111,493	140,279	[2]
Spare parts and supplies, net	36,387	35,361	[2]
Prepaid expenses and other	99,315	79,186	[2]
Total	841,299	716,076	[2]
Property and equipment, less accumulated depreciation and amortization of $611,642 and $558,548 as of June 30, 2018 and December 31, 2017, respectively	2,086,955	1,842,263	[2]
Other Assets:
Long-term prepayments and other	183,276	193,632	[2]
Intangible assets, less accumulated amortization of $22,080 and $21,561 as of June 30, 2018 and December 31, 2017, respectively	14,668	15,187
Goodwill	106,663	106,663
Total Assets	3,232,861	2,873,821	[2]
Current Liabilities:
Accounts payable	153,262	140,805	[2]
Air traffic liability	712,069	589,093
Other accrued liabilities	144,003	147,593	[2]
Current maturities of long-term debt and capital lease obligations	113,526	59,470	[2]
Total	1,122,860	936,961	[2]
Long-Term Debt and Capital Lease Obligations	578,453	511,201	[2]
Other Liabilities and Deferred Credits:
Accumulated pension and other post-retirement benefit obligations	218,426	220,788	[2]
Other liabilities and deferred credits	257,911	225,605	[2]
Deferred tax liability, net	135,164	134,141	[2]
Total	611,501	580,534	[2]
Commitments and Contingencies
Shareholders’ Equity:
Special preferred stock, $0.01 par value per share, three shares issued and outstanding as of June 30, 2018 and December 31, 2017	0	0
Common stock, $0.01 par value per share, 50,735,132 and 51,173,453 shares outstanding as of June 30, 2018 and December 31, 2017, respectively	507	512
Capital in excess of par value	125,871	126,743
Accumulated income	866,180	793,134
Accumulated other comprehensive loss, net	(72,511)	(75,264)
Total	920,047	845,125	[2]
Total Liabilities and Shareholders’ Equity	$ 3,232,861	$ 2,873,821	[2]
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation and amortization	$ 611,642	$ 558,548	[1]
Intangible assets, accumulated amortization	$ 22,080	$ 21,561
Special preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Special preferred stock, shares issued	3	3
Special preferred stock, shares outstanding	3	3
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares outstanding	50,735,132	51,173,453
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Cash Flows [Abstract]
Net cash provided by Operating Activities	$ 373,761	$ 335,440
Cash flows from Investing Activities:
Additions to property and equipment, including pre-delivery payments	(258,112)	(96,278)
Proceeds from disposition of property and equipment	987	33,511
Purchases of investments	(110,092)	(107,533)
Sales of investments	119,236	125,881
Net cash used in investing activities	(247,981)	(44,419)
Cash flows from Financing Activities:
Long-term borrowings	86,500	0
Repayments of long-term debt and capital lease obligations	(30,047)	(30,484)
Dividend payments	(12,238)	0
Debt issuance costs	(889)	0
Repurchases of common stock	(22,745)	(4,299)
Other	(3,523)	(7,535)
Net cash provided by (used in) financing activities	17,058	(42,318)
Net increase in cash and cash equivalents	142,838	248,703
Cash, cash equivalents, and restricted cash - Beginning of Period	191,953	330,991
Cash, cash equivalents, and restricted cash - End of Period	$ 334,791	$ 579,694

Business and Basis of Presentat

Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Hawaiian Holdings, Inc. (the Company or Holdings) is a holding company incorporated in the State of Delaware. The Company’s primary asset is its sole ownership of all issued and outstanding shares of common stock of Hawaiian Airlines, Inc. (Hawaiian). 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 fluctuations, 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 to be expected 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, 2017 .

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Recently Adopted Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers, and created Topic 606 (ASC 606), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASC 606 replaced most existing revenue recognition guidance in GAAP and is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company elected to adopt the full retrospective transition method as of January 1, 2018, resulting in the restatement of the prior periods as of the date of adoption. The overall decrease in equity as of January 1, 2016 was $76.0 million net of tax, with an offsetting change primarily in Other liabilities and deferred credits. Refer to Note 5 for additional revenue recognition discussion. The most significant impact of the standard relates to the accounting for the Company's frequent flyer travel award program. This change, as well as other less significant changes, are described below: • Frequent flyer - The standard requires the Company to account for miles earned by passengers in the HawaiianMiles program through flight activity as a component of the passenger revenue ticket transaction at the estimated selling price of the miles, effectively eliminating the incremental cost accounting previously applied. ASC 606 resulted in a significant increase to the deferred revenue liability on the Company's balance sheet, as the estimated selling price of the miles significantly exceeds the value previously recorded for incremental cost. The allocated value of miles earned through flights and sold to partners is recognized at the time the free travel or other award is redeemed by the passenger. Previously, the transportation element associated with sold miles was deferred and recognized as passenger revenue over the period when the transportation was expected to be provided ( 23 months). • Passenger revenue - The standard requires the Company to make certain adjustments to its passenger revenue, most notably related to unused tickets, which represents unexercised passenger rights. The Company uses historical information to estimate the proportion of ticket revenue that will expire unused to be recognized at the scheduled flight date. Prior to the adoption of ASC 606, the Company recorded this revenue as the tickets expired unused. As of the adoption date the adjustment due to passenger ticket expiration had the effect of reducing the air traffic liability but did not have a significant effect on revenue recognized. Ticket change fees were previously recognized at the time the fees were assessed; however, under ASC 606, the Company now defers the recognition of ticket change fees as a component of air traffic liability until the related transportation is provided. Further, the Company reclassified revenue items such as checked baggage, charter, ticket change and cancellation fees, in flight revenue, and other incidental sales to passenger revenue (from other operating revenue), as these items do not represent distinct performance obligations separate from the transportation provided to the passenger. • Selling Costs - Under ASC 606, the Company will capitalize selling costs associated with credit card fees, booking fees, and commissions, and recognize the associated expense at the ticketed flight date. Prior to ASC 606, the Company recognized the costs associated with credit card and booking fees as they were incurred. Restated financial statement information, which reflects the adoption of the ASC 606 is below: Three Months Ended June 30, 2017 As Reported Adjustments As Restated (in thousands) Operating Revenue: Passenger $ 593,210 $ 30,796 $ 624,006 Other 82,125 (36,015 ) 46,110 Total $ 675,335 $ (5,219 ) $ 670,116 Operating Expenses 532,786 490 533,276 Operating Income 142,549 (5,709 ) 136,840 Nonoperating Income (Expense) (13,191 ) — (13,191 ) Income tax expense 48,925 (2,170 ) 46,755 Net Income $ 80,433 $ (3,539 ) $ 76,894 Net Income Per Common Stock Share: Basic $ 1.50 $ (0.07 ) $ 1.43 Diluted $ 1.49 $ (0.06 ) $ 1.43 Six Months Ended June 30, 2017 As Reported Adjustments As Restated (in thousands) Operating Revenue: Passenger $ 1,130,800 $ 56,958 $ 1,187,758 Other 158,720 (70,153 ) 88,567 Total $ 1,289,520 $ (13,195 ) $ 1,276,325 Operating Expenses 1,079,677 (2,222 ) 1,077,455 Operating Income 209,843 (10,973 ) 198,870 Nonoperating Income (Expense) (29,003 ) — (29,003 ) Income tax expense 63,495 (4,168 ) 59,327 Net Income $ 117,345 $ (6,805 ) $ 110,540 Net Income Per Common Stock Share: Basic $ 2.19 $ (0.13 ) $ 2.06 Diluted $ 2.18 $ (0.13 ) $ 2.05 Select consolidated balance sheet line items, which reflect the adoption of the new standard are as follows: December 31, 2017 Balance Sheet As Reported Adjustments As Restated (in thousands) ASSETS Prepaid expenses and other $ 65,196 $ 13,990 $ 79,186 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities: Air traffic liability 545,362 43,731 589,093 Other accrued liabilities 146,283 1,310 147,593 Noncurrent Liabilities: Other liabilities and deferred credits 95,636 129,969 225,605 Deferred tax liability 174,344 (40,203 ) 134,141 Shareholders' Equity: Accumulated income 913,951 (120,817 ) 793,134 There was no impact to the Company's net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows. Recently Issued Accounting Pronouncements In February 2018, the FASB issued 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02). The guidance allows reclassification from accumulated other comprehensive income to retained earnings of stranded taxes resulting from the Tax Cuts and Jobs Act (the Tax Act). In addition, under ASU 2018-02, certain disclosures regarding stranded tax effects are required. ASU 2018-02 is effective for annual reporting periods beginning after December 15, 2018, with early adoption permitted. The Company continues to evaluate the impact of ASU 2018-02 and the potential effects on the Company's consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (ASU 2017-02), which better aligns a company's risk management activities and financial reporting for hedging relationships and is intended to simplify hedge accounting requirements. ASU 2017-12 is effective for annual reporting periods beginning after December 15, 2018, with early adoption permitted. The Company is continuing to evaluate the components and options within ASU 2017-12. In February 2016, the FASB issued ASU 2016-02, Leases (ASU 2016-02), requiring a lessee to recognize in the statement of financial position a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018. ASU 2016-02 requires entities to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. Full retrospective application is prohibited. The Company is evaluating the impact the adoption of this standard will have on its consolidated financial statements and believes this ASU will have a significant impact on its consolidated balance sheet but does not expect that the ASU will have a material impact on the Company's results of operations or cash flows. The effect of adopting the new standard will be to record right-of-use assets and operating lease obligations for current operating leases on the Company's balance sheet. Management is continuing to assess its current inventory of leases; as of June 30, 2018 the Company had 17 aircraft that are treated as an operating leases. Management has also identified and is evaluating the leases surrounding the terminal operations including hangar space, office space, and IT equipment. The FASB is in process of finalizing transition relief which will allow entities to continue to apply the guidance in ASC 840, Leases including its disclosure requirements, in the comparative periods presented in the year that a company adopts ASU 2016-02 (ASC 842). Entities that elect this option will record the cumulative effect of adoption on the effective date rather than at the beginning of the earliest comparative period presented. See Note 10 below which discusses our lease obligations as of June 30, 2018 .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2018
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 statement where net income is presented 2018 2017 2018 2017 (in thousands) Derivatives designated as hedging instruments under ASC 815 Foreign currency derivative losses (gains) $ 884 $ (480 ) $ 2,105 $ (1,692 ) Passenger revenue Total before tax 884 (480 ) 2,105 (1,692 ) Tax expense (benefit) (216 ) 182 (515 ) 641 Total, net of tax $ 668 $ (298 ) $ 1,590 $ (1,051 ) Amortization of defined benefit plan items Actuarial loss $ 624 $ 2,228 $ 1,248 $ 4,456 Nonoperating Income (Expense), Other, net Prior service cost 56 60 112 120 Nonoperating Income (Expense), Other, net Total before tax 680 2,288 1,360 4,576 Tax benefit (166 ) (898 ) (333 ) (1,765 ) Total, net of tax $ 514 $ 1,390 $ 1,027 $ 2,811 Short-term investments Realized losses (gain) on sales of investments, net $ 26 $ (12 ) $ 31 $ (20 ) Nonoperating Income (Expense), Other, net Total before tax 26 (12 ) 31 (20 ) Tax expense (benefit) (6 ) 5 (7 ) 8 Total, net of tax $ 20 $ (7 ) $ 24 $ (12 ) Total reclassifications for the period $ 1,202 $ 1,085 $ 2,641 $ 1,748 A rollforward of the amounts included in accumulated other comprehensive income (loss), net of taxes, for the three and six months ended June 30, 2018 and 2017 is as follows: Three months ended June 30, 2018 Foreign Currency Derivatives Defined Benefit Short-Term Investments Total (in thousands) Beginning balance $ (5,995 ) $ (75,440 ) $ (1,020 ) $ (82,455 ) Other comprehensive income before reclassifications, net of tax 8,595 — 147 8,742 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 668 514 20 1,202 Net current-period other comprehensive income 9,263 514 167 9,944 Ending balance $ 3,268 $ (74,926 ) $ (853 ) $ (72,511 ) Three months ended June 30, 2017 Foreign Currency Derivatives Defined Benefit Plan Items Short-Term Investments Total (in thousands) Beginning balance $ (26 ) $ (108,734 ) $ (276 ) $ (109,036 ) Other comprehensive income before reclassifications, net of tax 1,559 — 39 1,598 Amounts reclassified from accumulated other comprehensive income (loss), net of tax (298 ) 1,390 (7 ) 1,085 Net current-period other comprehensive income 1,261 1,390 32 2,683 Ending balance $ 1,235 $ (107,344 ) $ (244 ) $ (106,353 ) Six months ended June 30, 2018 Foreign Currency Derivatives Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ 1,249 $ (75,953 ) $ (560 ) $ (75,264 ) Other comprehensive income (loss) before reclassifications, net of tax 429 — (317 ) 112 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 1,590 1,027 24 2,641 Net current-period other comprehensive income (loss) 2,019 1,027 (293 ) 2,753 Ending balance $ 3,268 $ (74,926 ) $ (853 ) $ (72,511 ) Six months ended June 30, 2017 Foreign Currency Derivatives Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ 7,071 $ (110,202 ) $ (362 ) $ (103,493 ) Other comprehensive income (loss) before reclassifications, net of tax (4,785 ) 47 130 (4,608 ) Amounts reclassified from accumulated other comprehensive income (loss), net of tax (1,051 ) 2,811 (12 ) 1,748 Net current-period other comprehensive income (loss) (5,836 ) 2,858 118 (2,860 ) Ending balance $ 1,235 $ (107,344 ) $ (244 ) $ (106,353 )

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share, which excludes dilution, is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the three and six months ended June 30, 2018 and 2017 , anti-dilutive shares excluded from the calculation of diluted earnings per share were immaterial. Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 (in thousands, except for per share data) Numerator: Net Income $ 79,480 $ 76,894 $ 108,022 $ 110,540 Denominator: Weighted average common stock shares outstanding - Basic 50,776 53,626 50,915 53,595 Assumed exercise of stock options and awards 102 288 123 353 Weighted average common stock shares outstanding - Diluted 50,878 53,914 51,038 53,948 Net Income Per Share Basic $ 1.57 $ 1.43 $ 2.12 $ 2.06 Diluted $ 1.56 $ 1.43 $ 2.12 $ 2.05 Stock Repurchase Program In November 2017, the Company's Board of Directors approved a stock repurchase program pursuant to which the Company may repurchase up to $100 million of its outstanding common stock over a two -year period through December 2019. The stock repurchase program is subject to further modification or termination at any time. The Company spent $2.5 million and $22.8 million to repurchase and retire approximately 65 thousand shares and 614 thousand shares of the Company's common stock in open market transactions during the three and six months ended June 30, 2018 , respectively. As of June 30, 2018 , the Company had $77.2 million remaining to spend under its stock repurchase program. Dividends During the three months ended March 31, 2018 and June 30, 2018 , the Company declared and paid cash dividends of $0.12 per share, totaling $12.2 million .

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The majority of our revenue is derived from transporting passengers on our aircraft. The Company accounts for revenue in accordance with ASC 606, which was adopted on January 1, 2018, using the full retrospective method. See Note 2 for further discussion of the adoption, including the impact on our previously issued financial statements. 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 is engaged in 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 Department of Transportation) are summarized below: Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Geographic Information (in thousands) Domestic $ 528,476 $ 501,724 $ 1,020,678 $ 952,521 Pacific 186,971 168,392 360,181 323,804 Total operating revenue $ 715,447 $ 670,116 $ 1,380,859 $ 1,276,325 Passenger & Other revenue - Generally, the Company’s contracts with customers have two principal performance obligations, which are the promise to provide transportation to the passenger and the frequent flyer miles earned on the flight. In addition, the Company often charges additional fees for items such as baggage and in-flight entertainment. Such items are not capable of being distinct from the transportation provided because the customer can only benefit from the services during the flight. The transportation performance obligation, including the redemption of HawaiianMiles awards for flights, is satisfied, and revenue is recognized, as transportation is provided. In some instances, tickets sold by the Company can include a flight segment on another carrier which is referred to as an interline segment. In this situation, the Company acts as an agent for the other carrier and revenue is recognized net of cost in other revenue. Tickets sold by other airlines where the Company provides the transportation are recognized as passenger revenue at the estimated value to be billed to the other airline when travel is provided. Differences between amounts billed and the actual amounts may be rejected and rebilled or written off if the amount recorded was different from the original estimate. Other operating revenue consists of cargo revenue, ground handling fees, 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, 2018 2017 2018 2017 Passenger Revenue by Type (in thousands) Passenger revenue, excluding frequent flyer $ 618,406 $ 590,527 $ 1,196,361 $ 1,124,581 Frequent flyer revenue, transportation component 36,756 33,479 70,401 63,177 Passenger Revenue $ 655,162 $ 624,006 $ 1,266,762 $ 1,187,758 Other revenue (e.g. cargo and other miscellaneous) $ 41,539 $ 33,894 $ 80,229 $ 66,035 Frequent flyer revenue, marketing and brand component 18,746 12,216 33,868 22,532 Other Revenue $ 60,285 $ 46,110 $ 114,097 $ 88,567 For the three months ended June 30, 2018 and 2017 , the Company's total revenue was $715.4 million and $670.1 million , respectively. As of June 30, 2018 and December 31, 2017 , the Company's Air traffic liability balance as it relates to passenger tickets (excluding frequent flyer) was $536.3 million and $422.6 million , respectively, which represents future revenue that is expected to be realized over the next 12 months. During the three months ended June 30, 2018 and 2017 , the amount of revenue recognized that was included in Air traffic liability as of the beginning of the respective period was $293.1 million and $294.5 million , respectively. During the six months ended June 30, 2018 and 2017 , the amount of revenue recognized that was included in Air traffic liability as of the beginning of the respective period was $332.5 million and $295.9 million , respectively. Passenger revenue associated with unused tickets, which represent unexercised passenger rights, is recognized in proportion to the pattern of rights exercised by related passengers (e.g. scheduled departure dates). To calculate the portion to be recognized as revenue in the period, the Company utilizes historical information and applies the trend rate to the current air traffic liability balances for that specific period. Management has elected (via a practical expedient election) to exclude from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected from a customer, e.g., sales, use, value added, and certain excise taxes. Frequent Flyer Revenue - Hawaiian's frequent flyer travel award program provides a variety of awards to program members based on accumulated mileage. ASC 606 requires the Company to account for miles earned by passengers in the HawaiianMiles program through flight activity as a component of the passenger revenue ticket transaction at the estimated selling price of the miles. Ticket consideration received is allocated between the performance obligations, primarily travel and miles earned by passengers. The allocated value of the miles is deferred until the free travel or other award is used by the passenger, at which time it is included in passenger revenue. The value of the ticket used in the determination of the estimated selling price is based on the historical value of equivalent flights to those provided for loyalty awards and the related miles redeemed to obtain that award adjusted for breakage or fulfillment. On a quarterly basis, the Company calculates the equivalent ticket value (ETV) by analyzing the fares of similar tickets for the prior 12 months, considering cabin class and geographic region. The Company also sells mileage credits to companies participating in our frequent flyer program. These contracts generally include multiple performance obligations, including the transportation that will ultimately be provided when the mileage credits are redeemed and marketing and brand related activities. The marketing and brand performance obligations are effectively provided each time a HawaiianMiles member uses the co-branded credit card and monthly access to customer lists and marketing is provided, which corresponds to the timing of when the Company issues or is obligated to issue the mileage credits to the HawaiianMiles member. Therefore, the Company recognizes revenue for the marketing and brand performance obligations when HawaiianMiles members use their co-brand credit card and the resulting mileage credits are issued to them, which best correlates with the Company’s performance toward satisfying the obligation. During the first quarter of 2018, we amended our partnership with Barclaycard US, Hawaiian's co-branded credit card partner. Management determined that the amendment should be accounted for as a termination of the existing contract and the creation of a new contract under ASC 606 and the relative selling price was determined for each performance obligation of the new agreement. The new agreement continues through 2024 and includes improved economics and enhanced product offerings for our Barclay's co-branded cardholders. Accounting for frequent flyer revenue involves the use of various techniques to estimate revenue. The Company sells mileage credits to companies participating in the frequent flyer program, who in turn issue those miles to customers based on the volume of spend, making the majority of the transaction price variable. To determine the total estimated transaction price, the Company forecasts future credit card activity using historical information. The relative selling price is determined using management’s standalone estimated selling price of each performance obligation. The objective of using the estimated selling price based methodology is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. Accordingly, the Company determines the best estimate of selling price by considering multiple inputs and methods including, but not limited to, discounted cash flows, brand value, published selling prices, number of miles awarded and number of miles redeemed. The Company estimates the selling price of miles using an ETV adjusted for a fulfillment discount as described above. Miles expire after 18 months of member account inactivity. The ETV includes a fulfillment discount (breakage) to reflect the value of the award ticket over the number of miles that, based on historical experience, will be needed to obtain the award. The Company reviews its breakage estimates annually based upon the latest available information regarding redemption and expiration patterns (e.g., credit card and non-credit card holders). The Company’s estimate of the expected expiration of miles requires significant management judgment. Current and future changes to expiration assumptions or to the expiration policy, or to program rules and program could affect the estimated value of a mile. The Company's frequent flyer liability is recorded within two balance sheet accounts, Air traffic liability (short-term) and Other liabilities and deferred credits (long-term) based on estimated and expected redemption patterns using historical data and analysis. As of June 30, 2018 and December 31, 2017 , the Company's contract liability balance was $372.2 million and $321.9 million , respectively. Accounts Receivable - Accounts receivable primarily consist of amounts due from credit card companies, non-airline partners, and cargo transportation customers. The Company provides an allowance for uncollectible accounts equal to the estimated losses expected to be incurred based on historical chargebacks, write-offs, bankruptcies and other specific analyses. Bad debt expense was not material in any period presented. Costs to obtain or fulfill a contract - In order for the Company to provide transportation to our customers we incur fulfillment costs which are generally: booking fees, credit card fees, and commission/selling costs. As of June 30, 2018 and December 31, 2017 , the Company's asset balance associated with these costs were $19.9 million and $16.7 million , respectively. During the three months ended June 30, 2018 and 2017 , expenses related to these costs totaled to $23.8 million and $24.3 million , respectively. During the six months ended June 30, 2018 and 2017 , expenses related to these costs totaled to $47.7 million and $46.8 million , respectively. To determine the amount to capitalize and expense at the end of each period, the Company uses historical sales data and estimates the amount associated with unflown tickets.

Short-Term Investments

Short-Term Investments	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Short-Term Investments	Short-Term Investments Debt securities that are not classified as cash equivalents are classified as available-for-sale investments and are stated as current assets at fair value as these securities are available for use in current operations. Realized gains and losses on sales of investments are reflected in nonoperating income (expense) in the Company's unaudited Consolidated Statements of Operations. Unrealized gains and losses on available-for-sale debt securities are reflected as a component of accumulated other comprehensive income. The following is a summary of short-term investments held as of June 30, 2018 and December 31, 2017 : Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value June 30, 2018 (in thousands) Corporate debt $ 154,333 $ 21 $ (1,002 ) $ 153,352 U.S. government and agency debt 55,081 — (182 ) 54,899 Municipal bonds 16,684 — (49 ) 16,635 Other fixed income securities 34,462 — (35 ) 34,427 Total short-term investments $ 260,560 $ 21 $ (1,268 ) $ 259,313 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2017 (in thousands) Corporate debt $ 165,610 $ 8 $ (535 ) $ 165,083 U.S. government and agency debt 59,054 1 (215 ) 58,840 Municipal bonds 21,517 — (104 ) 21,413 Other fixed income securities 23,973 1 (13 ) 23,961 Total short-term investments $ 270,154 $ 10 $ (867 ) $ 269,297 Contractual maturities of short-term investments as of June 30, 2018 are shown below. Under 1 Year 1 to 5 Years Total (in thousands) Corporate debt $ 69,250 $ 84,102 $ 153,352 U.S. government and agency debt 44,011 10,888 54,899 Municipal bonds 9,643 6,992 16,635 Other fixed income securities 26,780 7,647 34,427 Total short-term investments $ 149,684 $ 109,629 $ 259,313

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements 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, 2018 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 175,486 $ 128,131 $ 47,355 $ — Restricted cash 1,000 1,000 — — Short-term investments 259,313 — 259,313 — Fuel derivative contracts: Crude oil call options 28,216 — 28,216 — Foreign currency derivatives 5,674 — 5,674 — Total assets measured at fair value $ 469,689 $ 129,131 $ 340,558 $ — Foreign currency derivatives 747 — 747 — Total liabilities measured at fair value $ 747 $ — $ 747 $ — Fair Value Measurements as of December 31, 2017 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 62,310 $ 27,807 $ 34,503 $ — Restricted cash 1,000 1,000 — — Short-term investments 269,297 — 269,297 — Fuel derivative contracts: Crude oil call options 20,272 — 20,272 — Jet fuel swaps 336 — 336 — Foreign currency derivatives 4,300 — 4,300 — Total assets measured at fair value $ 357,515 $ 28,807 $ 328,708 $ — Foreign currency derivatives 1,713 — 1,713 — Total liabilities measured at fair value $ 1,713 $ — $ 1,713 $ — Cash equivalents. The Company's level 1 cash equivalents consist of money market securities and the level 2 cash equivalents consist of U.S. agency bonds, mutual funds, and commercial paper. The instruments classified as level 2 are valued using quoted prices for similar assets in active markets. Restricted cash . The Company’s restricted cash consists of money market securities. Short-term investments. Short-term investments include U.S. and foreign government notes and bonds, U.S. agency bonds, variable-rate corporate bonds, asset backed securities, foreign and domestic corporate bonds, municipal bonds, and commercial paper. These instruments are valued using quoted prices for similar assets in active markets or other observable inputs. Fuel derivative contracts. The Company’s fuel derivative contracts consist of crude oil call options and jet fuel swaps, which are not traded on a public exchange. The fair value of these instruments are determined based on inputs available or derived from public markets including contractual terms, market prices, yield curves, and measures of volatility among others. Foreign currency derivatives. The Company’s foreign currency derivatives consist of Japanese Yen and Australian Dollar forward contracts and are valued primarily based upon data available or derived from public markets. The table below presents the Company’s debt (excluding obligations under capital leases and financing obligations) measured at fair value: Fair Value of Debt June 30, 2018 December 31, 2017 Carrying Fair Value Carrying Fair Value Amount Total Level 1 Level 2 Level 3 Amount Total Level 1 Level 2 Level 3 (in thousands) $ 495,504 $ 478,893 $ — $ — $ 478,893 $ 433,072 $ 444,099 $ — $ — $ 444,099 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 for similar instruments. 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, 2018
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 and foreign currencies. 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. During the three and six months ended June 30, 2018 , the Company primarily used crude oil call options and jet fuel swaps to hedge its aircraft fuel expense. These derivative instruments were not designated as hedges under ASC Topic 815, Derivatives and Hedging (ASC 815), for hedge accounting treatment. As a result, any changes in fair value of these derivative instruments are adjusted through other nonoperating income (expense) in the period of change. The following table reflects the amount of realized and unrealized gains and losses recorded as nonoperating income (expense) in the Company's unaudited Consolidated Statements of Operations. Three months ended June 30, Six months ended June 30, Fuel derivative contracts 2018 2017 2018 2017 (in thousands) Gains (losses) realized at settlement $ 10,827 $ (1,902 ) $ 16,488 $ 687 Reversal of prior period unrealized amounts (10,748 ) 3,441 (11,792 ) (4,506 ) Unrealized gains (losses) that will settle in future periods 18,873 (6,251 ) 18,873 (9,691 ) Gains (losses) on fuel derivatives recorded as nonoperating income (expense) $ 18,952 $ (4,712 ) $ 23,569 $ (13,510 ) Foreign Currency Exchange Rate Risk Management The Company is subject to foreign currency exchange rate risk due to revenues and expenses that are denominated in foreign currencies, with the primary exposures being the Japanese Yen and Australian Dollar. To manage exchange rate risk, the Company executes its international revenue and expense transactions in the same foreign currency to the extent practicable. As discussed in Note 9 the Company also recently executed Japanese Yen denominated debt agreements. The Company enters into foreign currency forward contracts to further manage the effects of fluctuating exchange rates. The effective portion of the gain or loss of designated cash flow hedges is reported as a component of accumulated other comprehensive income (AOCI) and reclassified into earnings in the same period in which the related sales are recognized as passenger revenue. The effective portion of the foreign currency forward contracts represents the change in fair value of the hedge that offsets the change in the fair value of the hedged item. To the extent the change in the fair value of the hedge does not perfectly offset the change in the fair value of the hedged item, the ineffective portion of the hedge is immediately recognized as nonoperating income (expense). Foreign currency forward contracts that are not designated as cash flow hedges are recorded at fair value, and any changes in fair value are recognized as other nonoperating income (expense) in the period of change. The Company believes that its foreign currency forward contracts that are designated as cash flow hedges will continue to be effective in offsetting changes in cash flow attributable to the hedged risk. The Company expects to reclassify a net gain of approximately $3.6 million into earnings over the next 12 months from AOCI based on the values at June 30, 2018 . The following tables present the gross fair value of asset and liability derivatives that are designated as hedging instruments under ASC 815 and derivatives that 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 Company's unaudited Consolidated Balance Sheets. Derivative position as of June 30, 2018 Balance Sheet Notional Amount Final Gross fair Gross fair Net (in thousands) (in thousands) Derivatives designated as hedges Foreign currency derivatives Prepaid expenses and other 16,987,750 Japanese Yen June 2019 4,600 (558 ) 4,042 Long-term prepayments and other 4,795,400 Japanese Yen June 2020 810 (185 ) 625 Derivatives not designated as hedges Foreign currency derivatives Prepaid expenses and other 1,216,250 Japanese Yen September 2018 264 (4 ) 260 Fuel derivative contracts Prepaid expenses and other 94,080 gallons June 2019 28,216 — 28,216 Derivative position as of December 31, 2017 Balance Sheet Notional Amount Final Gross fair Gross fair Net (in thousands) (in thousands) Derivatives designated as hedges Foreign currency derivatives Prepaid expenses and other 16,732,375 Japanese Yen December 2018 3,737 (1,441 ) 2,296 Long-term prepayments and other 4,666,700 Japanese Yen December 2019 546 (195 ) 351 Derivatives not designated as hedges Foreign currency derivatives Other accrued liabilities 866,150 Japanese Yen March 2018 17 (77 ) (60 ) Fuel derivative contracts Prepaid expenses and other 94,332 gallons December 2018 20,608 — 20,608 The following table reflects the impact of cash flow hedges designated for hedge accounting treatment and their location within the Company's unaudited Consolidated Statements of Comprehensive Income. (Gain) loss recognized in AOCI on derivatives (effective portion) (Gain) loss reclassified from AOCI (Gain) loss recognized in Three months ended June 30, Three months ended June 30, Three months ended June 30, 2018 2017 2018 2017 2018 2017 (in thousands) Foreign currency derivatives $ (11,378 ) $ (2,505 ) $ 884 $ (480 ) $ — $ — (Gain) loss recognized in AOCI on derivatives (effective portion) (Gain) loss reclassified from AOCI (Gain) loss recognized in Six months ended June 30, Six months ended June 30, Six months ended June 30, 2018 2017 2018 2017 2018 2017 (in thousands) Foreign currency derivatives $ (569 ) $ 7,705 $ 2,105 $ (1,692 ) $ — $ — Risk and Collateral Financial derivative instruments expose the Company to possible credit loss in the event the counterparties 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) regularly 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 by the counterparties based on the current market exposure of the derivative. 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 posted with counterparties as of June 30, 2018 and December 31, 2017 . 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, 2018
Debt Disclosure [Abstract]
Debt	Debt As of June 30, 2018 , the expected maturities of long-term debt for the remainder of 2018 and the next four years, and thereafter, were as follows (in thousands): Remaining months in 2018 $ 28,275 2019 81,023 2020 29,545 2021 56,509 2022 63,622 Thereafter 236,531 $ 495,505 During the three months ended June 30, 2018 , the Company executed Japanese Yen denominated debt agreements for a total value of $86.5 million , which is collateralized by aircraft. The loans that were executed were each for a term of 12 years at fixed installment coupon rates of 1.01% and 1.05% . The fluctuation in foreign exchange rates at each balance sheet date is reflected within the nonoperating income (expense) line item. The foreign currency gain or loss for three months ended June 30, 2018 was de minimus.

Leases

Leases	6 Months Ended
	Jun. 30, 2018
Leases [Abstract]
Leases	Leases The Company leases aircraft, engines, and other assets under long-term lease arrangements. Other leased assets include real property, airport and terminal facilities, maintenance facilities, and general offices. Certain leases include escalation clauses and renewal options. When lease renewals are considered to be reasonably assured, the rental payments that will be due during the renewal periods are included in the determination of rent expense over the life of the lease. As of June 30, 2018 , the scheduled future minimum rental payments under operating and capital leases with non-cancellable basic terms of more than one year were as follows: Capital & Financing Leases Operating Leases Aircraft Other Aircraft Other (in thousands) Remaining in 2018 $ 9,675 $ 3,665 $ 53,421 $ 3,487 2019 19,350 6,561 98,327 6,735 2020 19,350 4,641 82,362 6,559 2021 19,350 4,566 66,259 6,669 2022 19,205 4,870 60,153 6,938 Thereafter 55,666 119,862 164,993 96,147 142,596 144,165 $ 525,515 $ 126,535 Less amounts representing interest (24,885 ) (54,188 ) Present value of minimum capital lease payments $ 117,711 $ 89,977

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2018
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 2018 2017 2018 2017 (in thousands) Service cost $ 1,962 $ 3,813 $ 3,924 $ 7,626 Other cost: Interest cost 5,009 7,259 10,018 14,518 Expected return on plan assets (5,588 ) (4,796 ) (11,176 ) (9,592 ) Recognized net actuarial loss 680 2,287 1,360 4,574 Total other components of the net periodic benefit cost 101 4,750 202 9,500 Net periodic benefit cost $ 2,063 $ 8,563 $ 4,126 $ 17,126 Total other components of the net periodic benefit cost are recorded within the nonoperating income (expense), other, net line item. During each of the three and six months ended June 30, 2018 , the Company made no contributions to its defined benefit and other postretirement plans as the Company is not required to make any further minimum contributions until 2019 due to the sufficiency of the plans' current position. During the three and six months ended June 30, 2017 , the Company contributed $8.0 million and $14.4 million , respectively, to its defined benefit and other post-retirement plans. In August 2017, the Company completed the termination of the Merged Pension plan by transferring the assets and liabilities to a third-party insurance company. At that time, the Company contributed a total of $18.5 million in cash to fully fund the plan. In March 2017, the Company announced the ratification of a 63 -month contract amendment with its pilots as represented by the Air Line Pilots Association (ALPA). In August 2017, the Company made a one-time cash payment of approximately $101.9 million to fund the HRA and settle the post-65 post-retirement medical plan obligation. The cash contributed was distributed to the trust funding the individual health retirement notional accounts of the participants.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities Commitments As of June 30, 2018 , the Company had the following capital commitments consisting of firm aircraft and engine orders and purchase rights: Aircraft Type Firm Orders Purchase Rights Expected Delivery Dates A321neo aircraft 11 9 Between 2018 and 2020 Pratt & Whitney spare engines: A321neo spare engines 3 2 Between 2018 and 2019 In February 2018, the Company exercised its right to terminate its aircraft purchase agreement between the Company and Airbus for six Airbus A330-800neo aircraft and the purchase rights for an additional six Airbus A330-800neo aircraft. Refer to Note 13 below for discussion on the contract termination charge. In July 2018, the Company executed a purchase agreement for the purchase of 10 Boeing 787-9 "Dreamliner" aircraft with purchase rights for an additional 10 aircraft. The Company also intends to enter into additional related agreements in connection with the Boeing 787-9 purchases, including for the purchases of aircraft engines, a flight simulator, spare parts and materials and related services. The expected expenditures for the Boeing 787-9 aircraft and related parts are not reflected in the table below. Committed capital and operating expenditures include escalation amounts based on estimates. Capital expenditures represent aircraft and aircraft related equipment commitments, and operating expenditures represent all other commitments the Company has entered into. The gross committed expenditures and committed payments for those deliveries as of June 30, 2018 are detailed below: Capital Operating Total Committed (in thousands) Remaining in 2018 $ 207,042 $ 35,568 $ 242,610 2019 278,254 61,857 340,111 2020 47,978 56,483 104,461 2021 5,075 51,725 56,800 2022 5,075 51,922 56,997 Thereafter 38,067 216,069 254,136 $ 581,491 $ 473,624 $ 1,055,115 Litigation and Contingencies The Company is subject to legal proceedings arising in the normal course of its operations. Management 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 Holdback Under the Company’s bank-issued credit card processing agreements, certain 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. These holdbacks, which are included in restricted cash in the Company’s unaudited Consolidated Balance Sheets, totaled $1.0 million at each of June 30, 2018 and December 31, 2017 . In the event of a material adverse change in the Company's business, the holdback could increase to an amount up to 100% of the outstanding credit card amounts that is unflown (e.g. air traffic liability), which would also cause an increase in the level of restricted cash. If the Company is unable to obtain a waiver of, or otherwise mitigate the increase in the restriction of cash, it could have a material adverse impact on the Company's operations, business or financial condition.

Contract Terminations Expense a

Contract Terminations Expense and Special Items	6 Months Ended
	Jun. 30, 2018
Unusual or Infrequent Items, or Both [Abstract]
Contract Terminations Expense and Special Items	Contract Terminations Expense and Special Items Contract terminations expense For the six months ended June 30, 2018 , the Company terminated two contracts which incurred a total of $35.3 million in contract terminations expense. The transactions are described below: In February 2018, the Company exercised its right to terminate the aircraft purchase agreement between the Company and Airbus for six Airbus A330-800neo aircraft and the purchase rights for an additional six Airbus A330-800neo aircraft. To terminate the purchase agreement, the Company was obligated to repay Airbus for concessions received relating to a prior firm order, training credits, as well as forfeit the pre-delivery progress payments made towards the flight equipment. The Company recorded a contract terminations expense to reflect a portion of the termination penalty within the Consolidated Statements of Operations. In January 2018, the Company entered into a transaction with its lessor to early terminate and purchase three Boeing 767-300 aircraft leases and concurrently entered into a forward sale agreement for the same three Boeing 767-300 aircraft, including two Pratt & Whitney 4060 engines for each aircraft. These aircraft were previously accounted for as operating leases. In order to exit the lease and purchase the aircraft, the Company agreed to pay a total of $67.1 million (net of all deposits) of which a portion was expensed immediately and recognized as a contract termination fee. The expensed amount represents the total purchase price amount over fair value of the aircraft purchased as of the date of the transaction. Special items In April 2017, the Company executed a sale leaseback transaction with an independent third party for three Boeing 767-300 aircraft. The lease term for the three aircraft commenced in April 2017 and goes through November 2018, December 2018, and January 2019, respectively. During the three and six months ended June 30, 2017 , the Company recorded a loss on sale of aircraft of $4.8 million . In March 2017, the Company received notice from ALPA that the agreement was ratified by ALPA's members. The agreement became effective April 1, 2017. The agreement included, among other various benefits, a pay adjustment and ratification bonus computed based on previous service. During the six months ended June 30, 2017 , the Company expensed $18.7 million principally related to a one-time payment to reduce the Company's future 401K employer contribution for certain pilot groups, which was not recoverable once paid.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s effective tax rate was 24.9% and 37.8% for the three months ended June 30, 2018 and 2017 , respectively and 24.4% and 34.9% for the six months ended June 30, 2018 and 2017 , respectively. The effective tax rate represents a blend of federal and state taxes and includes the impact of certain nondeductible items. The effective tax rate for the three and six months ended June 30, 2018 also reflects the reduced federal corporate income tax rate as a result of the enactment of the Tax Act in December 2017. Management continues to analyze the different aspects of the Tax Act which could potentially affect the provisional estimates that were recorded at December 31, 2017.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	6 Months Ended
	Jun. 30, 2018
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information Non-cash investing and financing activities for the six months ended June 30, 2018 and 2017 were as follows: Six months ended June 30, 2018 2017 (in thousands) Investing and Financing Activities Not Affecting Cash: Property and equipment acquired through a capital lease $ 64,692 $ —

Condensed Consolidating Financi

Condensed Consolidating Financial Information	6 Months Ended
	Jun. 30, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Financial Information	Condensed Consolidating Financial Information The following condensed consolidating financial information is presented in accordance with Regulation S-X paragraph 210.3-10 because, in connection with the issuance by two pass-through trusts formed by Hawaiian (which is also referred to in this Note 16 as Subsidiary Issuer / Guarantor) of pass-through certificates, the Company (which is also referred to in this Note 16 as Parent Issuer / Guarantor) is fully and unconditionally guaranteeing the payment obligations of Hawaiian, which is a 100% owned subsidiary of the Company, 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 Income (Loss) Three months ended June 30, 2018 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 713,127 $ 2,393 $ (73 ) $ 715,447 Operating Expenses: Wages and benefits — 171,555 — — 171,555 Aircraft fuel, including taxes and delivery — 153,026 — — 153,026 Maintenance materials and repairs — 59,468 1,502 — 60,970 Aircraft and passenger servicing — 38,626 — — 38,626 Commissions and other selling — 31,863 25 (35 ) 31,853 Aircraft rent — 29,865 — — 29,865 Other rentals and landing fees — 30,952 232 — 31,184 Depreciation and amortization — 31,902 1,017 — 32,919 Purchased services (2 ) 31,249 242 (15 ) 31,474 Other 2,099 37,435 1,536 (23 ) 41,047 Total 2,097 615,941 4,554 (73 ) 622,519 Operating Income (Loss) (2,097 ) 97,186 (2,161 ) — 92,928 Nonoperating Income (Expense): Undistributed net income of subsidiaries 81,099 — — (81,099 ) — Interest expense and amortization of debt discounts and issuance costs (3 ) (7,579 ) (45 ) — (7,627 ) Interest income 51 1,880 — — 1,931 Capitalized interest — 2,355 — — 2,355 Gains on fuel derivatives — 18,952 — — 18,952 Other, net — (2,752 ) — — (2,752 ) Total 81,147 12,856 (45 ) (81,099 ) 12,859 Income (Loss) Before Income Taxes 79,050 110,042 (2,206 ) (81,099 ) 105,787 Income tax expense (benefit) (430 ) 27,201 (464 ) — 26,307 Net Income (Loss) $ 79,480 $ 82,841 $ (1,742 ) $ (81,099 ) $ 79,480 Comprehensive Income (Loss) $ 89,424 $ 92,785 $ (1,742 ) $ (91,043 ) $ 89,424 Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Three months ended June 30, 2017 (a) Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 668,387 $ 1,837 $ (108 ) $ 670,116 Operating Expenses: Aircraft fuel, including taxes and delivery — 102,774 — — 102,774 Wages and benefits — 154,660 — — 154,660 Aircraft rent — 34,183 370 — 34,553 Maintenance materials and repairs — 52,137 429 — 52,566 Aircraft and passenger servicing — 35,636 — — 35,636 Commissions and other selling 18 32,151 19 (26 ) 32,162 Depreciation and amortization — 26,919 953 — 27,872 Other rentals and landing fees — 27,438 — — 27,438 Purchased services 177 27,646 247 (15 ) 28,055 Special items — 4,771 — — 4,771 Other 1,308 31,001 547 (67 ) 32,789 Total 1,503 529,316 2,565 (108 ) 533,276 Operating Income (Loss) (1,503 ) 139,071 (728 ) — 136,840 Nonoperating Income (Expense): Undistributed net income of subsidiaries 77,574 — — (77,574 ) — Interest expense and amortization of debt discounts and issuance costs — (7,711 ) — — (7,711 ) Interest income 70 1,397 — — 1,467 Capitalized interest — 2,082 — — 2,082 Losses on fuel derivatives — (4,712 ) — — (4,712 ) Other, net — (4,317 ) — — (4,317 ) Total 77,644 (13,261 ) — (77,574 ) (13,191 ) Income (Loss) Before Income Taxes 76,141 125,810 (728 ) (77,574 ) 123,649 Income tax expense (benefit) (756 ) 47,511 — — 46,755 Net Income (Loss) $ 76,897 $ 78,299 $ (728 ) $ (77,574 ) $ 76,894 Comprehensive Income (Loss) $ 79,577 $ 80,985 $ (728 ) $ (80,257 ) $ 79,577 (a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) . See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information. Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Six months ended June 30, 2018 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,376,539 $ 4,520 $ (200 ) $ 1,380,859 Operating Expenses: Aircraft fuel, including taxes and delivery — 286,472 — — 286,472 Wages and benefits — 340,264 — — 340,264 Aircraft rent — 61,765 — — 61,765 Maintenance materials and repairs — 116,962 2,149 — 119,111 Aircraft and passenger servicing — 75,144 — — 75,144 Commissions and other selling (5 ) 63,821 45 (83 ) 63,778 Depreciation and amortization — 63,177 1,987 — 65,164 Other rentals and landing fees — 61,767 232 — 61,999 Purchased services 88 62,117 420 (30 ) 62,595 Contract termination expense — 35,322 — — 35,322 Other 3,680 74,558 1,901 (87 ) 80,052 Total 3,763 1,241,369 6,734 (200 ) 1,251,666 Operating Income (Loss) (3,763 ) 135,170 (2,214 ) — 129,193 Nonoperating Income (Expense): Undistributed net income of subsidiaries 110,909 — — (110,909 ) — Interest expense and amortization of debt discounts and issuance costs (3 ) (16,134 ) (45 ) — (16,182 ) Interest income 116 3,289 — — 3,405 Capitalized interest — 4,593 — — 4,593 Gains on fuel derivatives — 23,569 — — 23,569 Other, net (4 ) (1,697 ) 5 — (1,696 ) Total 111,018 13,620 (40 ) (110,909 ) 13,689 Income (Loss) Before Income Taxes 107,255 148,790 (2,254 ) (110,909 ) 142,882 Income tax expense (benefit) (767 ) 36,101 (474 ) — 34,860 Net Income (Loss) $ 108,022 $ 112,689 $ (1,780 ) $ (110,909 ) $ 108,022 Comprehensive Income (Loss) $ 110,775 $ 115,442 $ (1,780 ) $ (113,662 ) $ 110,775 Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Six months ended June 30, 2017 (a) Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,272,954 $ 3,583 $ (212 ) $ 1,276,325 Operating Expenses: Aircraft fuel, including taxes and delivery — 206,312 — — 206,312 Wages and benefits — 305,713 — — 305,713 Aircraft rent — 67,318 370 — 67,688 Maintenance materials and repairs — 109,430 2,540 — 111,970 Aircraft and passenger servicing — 69,926 — — 69,926 Commissions and other selling 24 61,814 38 (72 ) 61,804 Depreciation and amortization — 53,436 1,904 — 55,340 Other rentals and landing fees — 55,774 — — 55,774 Purchased services 283 54,000 439 (30 ) 54,692 Special items — 23,450 — — 23,450 Other 2,460 61,454 982 (110 ) 64,786 Total 2,767 1,068,627 6,273 (212 ) 1,077,455 Operating Income (Loss) (2,767 ) 204,327 (2,690 ) — 198,870 Nonoperating Income (Expense): Undistributed net income of subsidiaries 111,306 — — (111,306 ) — Interest expense and amortization of debt discounts and issuance costs — (15,714 ) — — (15,714 ) Interest income 140 2,479 — — 2,619 Capitalized interest — 3,842 — — 3,842 Losses on fuel derivatives — (13,510 ) — — (13,510 ) Other, net — (6,240 ) — — (6,240 ) Total 111,446 (29,143 ) — (111,306 ) (29,003 ) Income (Loss) Before Income Taxes 108,679 175,184 (2,690 ) (111,306 ) 169,867 Income tax expense (benefit) (1,860 ) 61,187 — — 59,327 Net Income (Loss) $ 110,539 $ 113,997 $ (2,690 ) $ (111,306 ) $ 110,540 Comprehensive Income (Loss) $ 107,680 $ 111,136 $ (2,690 ) $ (108,446 ) $ 107,680 (a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) . See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information. Condensed Consolidating Balance Sheets June 30, 2018 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current assets: Cash and cash equivalents $ 19,918 $ 306,679 $ 7,194 $ — $ 333,791 Restricted cash — 1,000 — — 1,000 Short-term investments — 259,313 — — 259,313 Accounts receivable, net 25 110,932 784 (248 ) 111,493 Spare parts and supplies, net — 36,387 — — 36,387 Prepaid expenses and other 181 99,056 78 — 99,315 Total 20,124 813,367 8,056 (248 ) 841,299 Property and equipment at cost — 2,610,253 88,344 — 2,698,597 Less accumulated depreciation and amortization — (598,700 ) (12,942 ) — (611,642 ) Property and equipment, net — 2,011,553 75,402 — 2,086,955 Long-term prepayments and other — 183,013 263 — 183,276 Deferred tax assets, net 33,086 — — (33,086 ) — Goodwill and other intangible assets, net — 120,407 924 — 121,331 Intercompany receivable — 405,270 — (405,270 ) — Investment in consolidated subsidiaries 1,261,977 — — (1,261,977 ) — TOTAL ASSETS $ 1,315,187 $ 3,533,610 $ 84,645 $ (1,700,581 ) $ 3,232,861 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ 1,178 $ 150,294 $ 2,038 $ (248 ) $ 153,262 Air traffic liability — 707,724 4,345 — 712,069 Other accrued liabilities — 143,728 275 — 144,003 Current maturities of long-term debt, less discount, and capital lease obligations — 113,496 30 — 113,526 Total 1,178 1,115,242 6,688 (248 ) 1,122,860 Long-term debt and capital lease obligations — 573,831 4,622 — 578,453 Intercompany payable 393,962 — 11,308 (405,270 ) — Other liabilities and deferred credits: =sum(C32:I32) Accumulated pension and other post-retirement benefit obligations — 218,426 — — 218,426 Other liabilities and deferred credits — 256,798 1,113 — 257,911 Deferred tax liabilities, net — 168,250 — (33,086 ) 135,164 Total — 643,474 1,113 (33,086 ) 611,501 Shareholders’ equity 920,047 1,201,063 60,914 (1,261,977 ) 920,047 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 1,315,187 $ 3,533,610 $ 84,645 $ (1,700,581 ) $ 3,232,861 Condensed Consolidating Balance Sheets December 31, 2017 (a) Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current assets: Cash and cash equivalents $ 57,405 $ 125,861 $ 7,687 $ — $ 190,953 Restricted cash — 1,000 — — 1,000 Short-term investments — 269,297 — — 269,297 Accounts receivable, net 25 139,008 1,455 (209 ) 140,279 Spare parts and supplies, net — 35,361 — — 35,361 Prepaid expenses and other 171 78,933 82 — 79,186 Total 57,601 649,460 9,224 (209 ) 716,076 Property and equipment at cost — 2,326,249 74,562 — 2,400,811 Less accumulated depreciation and amortization — (546,831 ) (11,717 ) — (558,548 ) Property and equipment, net — 1,779,418 62,845 — 1,842,263 Long-term prepayments and other — 193,449 183 — 193,632 Deferred tax assets, net 31,845 — — (31,845 ) — Goodwill and other intangible assets, net — 120,695 1,155 — 121,850 Intercompany receivable — 392,791 — (392,791 ) — Investment in consolidated subsidiaries 1,137,941 — — (1,137,941 ) — TOTAL ASSETS $ 1,227,387 $ 3,135,813 $ 73,407 $ (1,562,786 ) $ 2,873,821 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ 622 $ 138,818 $ 1,574 $ (209 ) $ 140,805 Air traffic liability — 584,366 4,727 — 589,093 Other accrued liabilities 32 147,211 350 — 147,593 Current maturities of long-term debt, less discount, and capital lease obligations — 59,470 — — 59,470 Total 654 929,865 6,651 (209 ) 936,961 Long-term debt and capital lease obligations — 511,201 — — 511,201 Intercompany payable 381,608 — 11,183 (392,791 ) — Other liabilities and deferred credits: 0 Accumulated pension and other post-retirement benefit obligations — 220,788 — — 220,788 Other liabilities and deferred credits — 224,500 1,105 — 225,605 Deferred tax liabilities, net — 165,986 — (31,845 ) 134,141 Total — 611,274 1,105 (31,845 ) 580,534 Shareholders’ equity 845,125 1,083,473 54,468 (1,137,941 ) 845,125 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 1,227,387 $ 3,135,813 $ 73,407 $ (1,562,786 ) $ 2,873,821 (a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) . See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information. Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2018 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Provided By (Used In) Operating Activities $ (2,603 ) $ 375,052 $ 1,312 $ — $ 373,761 Cash Flows From Investing Activities: Net payments to affiliates (8,700 ) (8,721 ) — 17,421 — Additions to property and equipment, including pre-delivery deposits — (247,607 ) (10,505 ) — (258,112 ) Proceeds from disposition of property and equipment — 987 — — 987 Purchases of investments — (110,092 ) — — (110,092 ) Sales of investments — 119,236 — — 119,236 Net cash used in investing activities (8,700 ) (246,197 ) (10,505 ) 17,421 (247,981 ) Cash Flows From Financing Activities: Long-term borrowings — 86,500 — — 86,500 Repayments of long-term debt and capital lease obligations — (30,047 ) — — (30,047 ) Debt issuance costs — (889 ) — — (889 ) Dividend payments (12,238 ) — — — (12,238 ) Net payments from affiliates 8,721 — 8,700 (17,421 ) — Repurchases of common stock (22,745 ) — — — (22,745 ) Other 78 (3,601 ) — — (3,523 ) Net cash provided by (used in) financing activities (26,184 ) 51,963 8,700 (17,421 ) 17,058 Net increase (decrease) in cash and cash equivalents (37,487 ) 180,818 (493 ) — 142,838 Cash, cash equivalents, & restricted cash - Beginning of Period 57,405 126,861 7,687 — 191,953 Cash, cash equivalents, & restricted cash - End of Period $ 19,918 $ 307,679 $ 7,194 $ — $ 334,791 Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2017 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Provided By (Used In) Operating Activities $ (2,498 ) $ 339,242 $ (1,304 ) $ — $ 335,440 Cash Flows From Investing Activities: Net payments to affiliates — (7,960 ) — 7,960 — Additions to property and equipment, including pre-delivery deposits — (94,250 ) (2,028 ) — (96,278 ) Proceeds from disposition of property and equipment — 33,511 — — 33,511 Purchases of investments — (107,533 ) — — (107,533 ) Sales of investments — 125,881 — — 125,881 Net cash used in investing activities — (50,351 ) (2,028 ) 7,960 (44,419 ) Cash Flows From Financing Activities: Repayments of long-term debt and capital lease obligations — (30,484 ) — — (30,484 ) Net payments from affiliates 7,960 — — (7,960 ) — Repurchases of Common Stock (4,299 ) — — — (4,299 ) Other 86 (7,621 ) — — (7,535 ) Net cash provided by (used in) financing activities 3,747 (38,105 ) — (7,960 ) (42,318 ) Net increase (decrease) in cash and cash equivalents 1,249 250,786 (3,332 ) — 248,703 Cash, cash equivalents, & restricted cash - Beginning of Period 67,629 254,985 8,377 — 330,991 Cash, cash equivalents, & restricted cash - End of Period $ 68,878 $ 505,771 $ 5,045 $ — $ 579,694 Income Taxes The income tax expense (benefit) is presented as if each entity that is part of the consolidated group files a separate return.

Significant Accounting Polici24

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Recently Adopted Accounting Pronouncements; Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers, and created Topic 606 (ASC 606), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASC 606 replaced most existing revenue recognition guidance in GAAP and is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company elected to adopt the full retrospective transition method as of January 1, 2018, resulting in the restatement of the prior periods as of the date of adoption. The overall decrease in equity as of January 1, 2016 was $76.0 million net of tax, with an offsetting change primarily in Other liabilities and deferred credits. Refer to Note 5 for additional revenue recognition discussion. The most significant impact of the standard relates to the accounting for the Company's frequent flyer travel award program. This change, as well as other less significant changes, are described below: • Frequent flyer - The standard requires the Company to account for miles earned by passengers in the HawaiianMiles program through flight activity as a component of the passenger revenue ticket transaction at the estimated selling price of the miles, effectively eliminating the incremental cost accounting previously applied. ASC 606 resulted in a significant increase to the deferred revenue liability on the Company's balance sheet, as the estimated selling price of the miles significantly exceeds the value previously recorded for incremental cost. The allocated value of miles earned through flights and sold to partners is recognized at the time the free travel or other award is redeemed by the passenger. Previously, the transportation element associated with sold miles was deferred and recognized as passenger revenue over the period when the transportation was expected to be provided ( 23 months). • Passenger revenue - The standard requires the Company to make certain adjustments to its passenger revenue, most notably related to unused tickets, which represents unexercised passenger rights. The Company uses historical information to estimate the proportion of ticket revenue that will expire unused to be recognized at the scheduled flight date. Prior to the adoption of ASC 606, the Company recorded this revenue as the tickets expired unused. As of the adoption date the adjustment due to passenger ticket expiration had the effect of reducing the air traffic liability but did not have a significant effect on revenue recognized. Ticket change fees were previously recognized at the time the fees were assessed; however, under ASC 606, the Company now defers the recognition of ticket change fees as a component of air traffic liability until the related transportation is provided. Further, the Company reclassified revenue items such as checked baggage, charter, ticket change and cancellation fees, in flight revenue, and other incidental sales to passenger revenue (from other operating revenue), as these items do not represent distinct performance obligations separate from the transportation provided to the passenger. • Selling Costs - Under ASC 606, the Company will capitalize selling costs associated with credit card fees, booking fees, and commissions, and recognize the associated expense at the ticketed flight date. Prior to ASC 606, the Company recognized the costs associated with credit card and booking fees as they were incurred. Restated financial statement information, which reflects the adoption of the ASC 606 is below: Three Months Ended June 30, 2017 As Reported Adjustments As Restated (in thousands) Operating Revenue: Passenger $ 593,210 $ 30,796 $ 624,006 Other 82,125 (36,015 ) 46,110 Total $ 675,335 $ (5,219 ) $ 670,116 Operating Expenses 532,786 490 533,276 Operating Income 142,549 (5,709 ) 136,840 Nonoperating Income (Expense) (13,191 ) — (13,191 ) Income tax expense 48,925 (2,170 ) 46,755 Net Income $ 80,433 $ (3,539 ) $ 76,894 Net Income Per Common Stock Share: Basic $ 1.50 $ (0.07 ) $ 1.43 Diluted $ 1.49 $ (0.06 ) $ 1.43 Six Months Ended June 30, 2017 As Reported Adjustments As Restated (in thousands) Operating Revenue: Passenger $ 1,130,800 $ 56,958 $ 1,187,758 Other 158,720 (70,153 ) 88,567 Total $ 1,289,520 $ (13,195 ) $ 1,276,325 Operating Expenses 1,079,677 (2,222 ) 1,077,455 Operating Income 209,843 (10,973 ) 198,870 Nonoperating Income (Expense) (29,003 ) — (29,003 ) Income tax expense 63,495 (4,168 ) 59,327 Net Income $ 117,345 $ (6,805 ) $ 110,540 Net Income Per Common Stock Share: Basic $ 2.19 $ (0.13 ) $ 2.06 Diluted $ 2.18 $ (0.13 ) $ 2.05 Select consolidated balance sheet line items, which reflect the adoption of the new standard are as follows: December 31, 2017 Balance Sheet As Reported Adjustments As Restated (in thousands) ASSETS Prepaid expenses and other $ 65,196 $ 13,990 $ 79,186 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities: Air traffic liability 545,362 43,731 589,093 Other accrued liabilities 146,283 1,310 147,593 Noncurrent Liabilities: Other liabilities and deferred credits 95,636 129,969 225,605 Deferred tax liability 174,344 (40,203 ) 134,141 Shareholders' Equity: Accumulated income 913,951 (120,817 ) 793,134 There was no impact to the Company's net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows. Recently Issued Accounting Pronouncements In February 2018, the FASB issued 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02). The guidance allows reclassification from accumulated other comprehensive income to retained earnings of stranded taxes resulting from the Tax Cuts and Jobs Act (the Tax Act). In addition, under ASU 2018-02, certain disclosures regarding stranded tax effects are required. ASU 2018-02 is effective for annual reporting periods beginning after December 15, 2018, with early adoption permitted. The Company continues to evaluate the impact of ASU 2018-02 and the potential effects on the Company's consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (ASU 2017-02), which better aligns a company's risk management activities and financial reporting for hedging relationships and is intended to simplify hedge accounting requirements. ASU 2017-12 is effective for annual reporting periods beginning after December 15, 2018, with early adoption permitted. The Company is continuing to evaluate the components and options within ASU 2017-12. In February 2016, the FASB issued ASU 2016-02, Leases (ASU 2016-02), requiring a lessee to recognize in the statement of financial position a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018. ASU 2016-02 requires entities to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. Full retrospective application is prohibited. The Company is evaluating the impact the adoption of this standard will have on its consolidated financial statements and believes this ASU will have a significant impact on its consolidated balance sheet but does not expect that the ASU will have a material impact on the Company's results of operations or cash flows. The effect of adopting the new standard will be to record right-of-use assets and operating lease obligations for current operating leases on the Company's balance sheet. Management is continuing to assess its current inventory of leases; as of June 30, 2018 the Company had 17 aircraft that are treated as an operating leases. Management has also identified and is evaluating the leases surrounding the terminal operations including hangar space, office space, and IT equipment. The FASB is in process of finalizing transition relief which will allow entities to continue to apply the guidance in ASC 840, Leases including its disclosure requirements, in the comparative periods presented in the year that a company adopts ASU 2016-02 (ASC 842). Entities that elect this option will record the cumulative effect of adoption on the effective date rather than at the beginning of the earliest comparative period presented. See Note 10 below which discusses our lease obligations as of June 30, 2018 .

Significant Accounting Polici25

Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Schedule of recast unaudited financial information reflecting ASC 606	Restated financial statement information, which reflects the adoption of the ASC 606 is below: Three Months Ended June 30, 2017 As Reported Adjustments As Restated (in thousands) Operating Revenue: Passenger $ 593,210 $ 30,796 $ 624,006 Other 82,125 (36,015 ) 46,110 Total $ 675,335 $ (5,219 ) $ 670,116 Operating Expenses 532,786 490 533,276 Operating Income 142,549 (5,709 ) 136,840 Nonoperating Income (Expense) (13,191 ) — (13,191 ) Income tax expense 48,925 (2,170 ) 46,755 Net Income $ 80,433 $ (3,539 ) $ 76,894 Net Income Per Common Stock Share: Basic $ 1.50 $ (0.07 ) $ 1.43 Diluted $ 1.49 $ (0.06 ) $ 1.43 Six Months Ended June 30, 2017 As Reported Adjustments As Restated (in thousands) Operating Revenue: Passenger $ 1,130,800 $ 56,958 $ 1,187,758 Other 158,720 (70,153 ) 88,567 Total $ 1,289,520 $ (13,195 ) $ 1,276,325 Operating Expenses 1,079,677 (2,222 ) 1,077,455 Operating Income 209,843 (10,973 ) 198,870 Nonoperating Income (Expense) (29,003 ) — (29,003 ) Income tax expense 63,495 (4,168 ) 59,327 Net Income $ 117,345 $ (6,805 ) $ 110,540 Net Income Per Common Stock Share: Basic $ 2.19 $ (0.13 ) $ 2.06 Diluted $ 2.18 $ (0.13 ) $ 2.05 Select consolidated balance sheet line items, which reflect the adoption of the new standard are as follows: December 31, 2017 Balance Sheet As Reported Adjustments As Restated (in thousands) ASSETS Prepaid expenses and other $ 65,196 $ 13,990 $ 79,186 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities: Air traffic liability 545,362 43,731 589,093 Other accrued liabilities 146,283 1,310 147,593 Noncurrent Liabilities: Other liabilities and deferred credits 95,636 129,969 225,605 Deferred tax liability 174,344 (40,203 ) 134,141 Shareholders' Equity: Accumulated income 913,951 (120,817 ) 793,134

Accumulated Other Comprehensi26

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2018
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Reclassifications by component	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 statement where net income is presented 2018 2017 2018 2017 (in thousands) Derivatives designated as hedging instruments under ASC 815 Foreign currency derivative losses (gains) $ 884 $ (480 ) $ 2,105 $ (1,692 ) Passenger revenue Total before tax 884 (480 ) 2,105 (1,692 ) Tax expense (benefit) (216 ) 182 (515 ) 641 Total, net of tax $ 668 $ (298 ) $ 1,590 $ (1,051 ) Amortization of defined benefit plan items Actuarial loss $ 624 $ 2,228 $ 1,248 $ 4,456 Nonoperating Income (Expense), Other, net Prior service cost 56 60 112 120 Nonoperating Income (Expense), Other, net Total before tax 680 2,288 1,360 4,576 Tax benefit (166 ) (898 ) (333 ) (1,765 ) Total, net of tax $ 514 $ 1,390 $ 1,027 $ 2,811 Short-term investments Realized losses (gain) on sales of investments, net $ 26 $ (12 ) $ 31 $ (20 ) Nonoperating Income (Expense), Other, net Total before tax 26 (12 ) 31 (20 ) Tax expense (benefit) (6 ) 5 (7 ) 8 Total, net of tax $ 20 $ (7 ) $ 24 $ (12 ) Total reclassifications for the period $ 1,202 $ 1,085 $ 2,641 $ 1,748
Schedule of amounts included in accumulated other comprehensive income (loss), net of taxes	A rollforward of the amounts included in accumulated other comprehensive income (loss), net of taxes, for the three and six months ended June 30, 2018 and 2017 is as follows: Three months ended June 30, 2018 Foreign Currency Derivatives Defined Benefit Short-Term Investments Total (in thousands) Beginning balance $ (5,995 ) $ (75,440 ) $ (1,020 ) $ (82,455 ) Other comprehensive income before reclassifications, net of tax 8,595 — 147 8,742 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 668 514 20 1,202 Net current-period other comprehensive income 9,263 514 167 9,944 Ending balance $ 3,268 $ (74,926 ) $ (853 ) $ (72,511 ) Three months ended June 30, 2017 Foreign Currency Derivatives Defined Benefit Plan Items Short-Term Investments Total (in thousands) Beginning balance $ (26 ) $ (108,734 ) $ (276 ) $ (109,036 ) Other comprehensive income before reclassifications, net of tax 1,559 — 39 1,598 Amounts reclassified from accumulated other comprehensive income (loss), net of tax (298 ) 1,390 (7 ) 1,085 Net current-period other comprehensive income 1,261 1,390 32 2,683 Ending balance $ 1,235 $ (107,344 ) $ (244 ) $ (106,353 ) Six months ended June 30, 2018 Foreign Currency Derivatives Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ 1,249 $ (75,953 ) $ (560 ) $ (75,264 ) Other comprehensive income (loss) before reclassifications, net of tax 429 — (317 ) 112 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 1,590 1,027 24 2,641 Net current-period other comprehensive income (loss) 2,019 1,027 (293 ) 2,753 Ending balance $ 3,268 $ (74,926 ) $ (853 ) $ (72,511 ) Six months ended June 30, 2017 Foreign Currency Derivatives Defined Benefit Pension Items Short-Term Investments Total (in thousands) Beginning balance $ 7,071 $ (110,202 ) $ (362 ) $ (103,493 ) Other comprehensive income (loss) before reclassifications, net of tax (4,785 ) 47 130 (4,608 ) Amounts reclassified from accumulated other comprehensive income (loss), net of tax (1,051 ) 2,811 (12 ) 1,748 Net current-period other comprehensive income (loss) (5,836 ) 2,858 118 (2,860 ) Ending balance $ 1,235 $ (107,344 ) $ (244 ) $ (106,353 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Schedule of earnings per share basic and diluted	Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 (in thousands, except for per share data) Numerator: Net Income $ 79,480 $ 76,894 $ 108,022 $ 110,540 Denominator: Weighted average common stock shares outstanding - Basic 50,776 53,626 50,915 53,595 Assumed exercise of stock options and awards 102 288 123 353 Weighted average common stock shares outstanding - Diluted 50,878 53,914 51,038 53,948 Net Income Per Share Basic $ 1.57 $ 1.43 $ 2.12 $ 2.06 Diluted $ 1.56 $ 1.43 $ 2.12 $ 2.05

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	These amounts are recognized when the service is provided. Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Passenger Revenue by Type (in thousands) Passenger revenue, excluding frequent flyer $ 618,406 $ 590,527 $ 1,196,361 $ 1,124,581 Frequent flyer revenue, transportation component 36,756 33,479 70,401 63,177 Passenger Revenue $ 655,162 $ 624,006 $ 1,266,762 $ 1,187,758 Other revenue (e.g. cargo and other miscellaneous) $ 41,539 $ 33,894 $ 80,229 $ 66,035 Frequent flyer revenue, marketing and brand component 18,746 12,216 33,868 22,532 Other Revenue $ 60,285 $ 46,110 $ 114,097 $ 88,567 The Company's operating revenues by geographic region (as defined by the Department of Transportation) are summarized below: Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Geographic Information (in thousands) Domestic $ 528,476 $ 501,724 $ 1,020,678 $ 952,521 Pacific 186,971 168,392 360,181 323,804 Total operating revenue $ 715,447 $ 670,116 $ 1,380,859 $ 1,276,325

Short-Term Investments (Tables)

Short-Term Investments (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Summary of short-term investments	The following is a summary of short-term investments held as of June 30, 2018 and December 31, 2017 : Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value June 30, 2018 (in thousands) Corporate debt $ 154,333 $ 21 $ (1,002 ) $ 153,352 U.S. government and agency debt 55,081 — (182 ) 54,899 Municipal bonds 16,684 — (49 ) 16,635 Other fixed income securities 34,462 — (35 ) 34,427 Total short-term investments $ 260,560 $ 21 $ (1,268 ) $ 259,313 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2017 (in thousands) Corporate debt $ 165,610 $ 8 $ (535 ) $ 165,083 U.S. government and agency debt 59,054 1 (215 ) 58,840 Municipal bonds 21,517 — (104 ) 21,413 Other fixed income securities 23,973 1 (13 ) 23,961 Total short-term investments $ 270,154 $ 10 $ (867 ) $ 269,297
Schedule of contractual maturities of short-term investments	Contractual maturities of short-term investments as of June 30, 2018 are shown below. Under 1 Year 1 to 5 Years Total (in thousands) Corporate debt $ 69,250 $ 84,102 $ 153,352 U.S. government and agency debt 44,011 10,888 54,899 Municipal bonds 9,643 6,992 16,635 Other fixed income securities 26,780 7,647 34,427 Total short-term investments $ 149,684 $ 109,629 $ 259,313

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
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, 2018 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 175,486 $ 128,131 $ 47,355 $ — Restricted cash 1,000 1,000 — — Short-term investments 259,313 — 259,313 — Fuel derivative contracts: Crude oil call options 28,216 — 28,216 — Foreign currency derivatives 5,674 — 5,674 — Total assets measured at fair value $ 469,689 $ 129,131 $ 340,558 $ — Foreign currency derivatives 747 — 747 — Total liabilities measured at fair value $ 747 $ — $ 747 $ — Fair Value Measurements as of December 31, 2017 Total Level 1 Level 2 Level 3 (in thousands) Cash equivalents $ 62,310 $ 27,807 $ 34,503 $ — Restricted cash 1,000 1,000 — — Short-term investments 269,297 — 269,297 — Fuel derivative contracts: Crude oil call options 20,272 — 20,272 — Jet fuel swaps 336 — 336 — Foreign currency derivatives 4,300 — 4,300 — Total assets measured at fair value $ 357,515 $ 28,807 $ 328,708 $ — Foreign currency derivatives 1,713 — 1,713 — Total liabilities measured at fair value $ 1,713 $ — $ 1,713 $ —
Schedule of debt (excluding obligations under capital leases) measured at fair value	The table below presents the Company’s debt (excluding obligations under capital leases and financing obligations) measured at fair value: Fair Value of Debt June 30, 2018 December 31, 2017 Carrying Fair Value Carrying Fair Value Amount Total Level 1 Level 2 Level 3 Amount Total Level 1 Level 2 Level 3 (in thousands) $ 495,504 $ 478,893 $ — $ — $ 478,893 $ 433,072 $ 444,099 $ — $ — $ 444,099

Financial Derivative Instrume31

Financial Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
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 Company's unaudited Consolidated Statements of Operations. Three months ended June 30, Six months ended June 30, Fuel derivative contracts 2018 2017 2018 2017 (in thousands) Gains (losses) realized at settlement $ 10,827 $ (1,902 ) $ 16,488 $ 687 Reversal of prior period unrealized amounts (10,748 ) 3,441 (11,792 ) (4,506 ) Unrealized gains (losses) that will settle in future periods 18,873 (6,251 ) 18,873 (9,691 ) Gains (losses) on fuel derivatives recorded as nonoperating income (expense) $ 18,952 $ (4,712 ) $ 23,569 $ (13,510 )
Schedule of fair value of the asset and liability derivatives and net derivative position recorded	The following tables present the gross fair value of asset and liability derivatives that are designated as hedging instruments under ASC 815 and derivatives that 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 Company's unaudited Consolidated Balance Sheets. Derivative position as of June 30, 2018 Balance Sheet Notional Amount Final Gross fair Gross fair Net (in thousands) (in thousands) Derivatives designated as hedges Foreign currency derivatives Prepaid expenses and other 16,987,750 Japanese Yen June 2019 4,600 (558 ) 4,042 Long-term prepayments and other 4,795,400 Japanese Yen June 2020 810 (185 ) 625 Derivatives not designated as hedges Foreign currency derivatives Prepaid expenses and other 1,216,250 Japanese Yen September 2018 264 (4 ) 260 Fuel derivative contracts Prepaid expenses and other 94,080 gallons June 2019 28,216 — 28,216 Derivative position as of December 31, 2017 Balance Sheet Notional Amount Final Gross fair Gross fair Net (in thousands) (in thousands) Derivatives designated as hedges Foreign currency derivatives Prepaid expenses and other 16,732,375 Japanese Yen December 2018 3,737 (1,441 ) 2,296 Long-term prepayments and other 4,666,700 Japanese Yen December 2019 546 (195 ) 351 Derivatives not designated as hedges Foreign currency derivatives Other accrued liabilities 866,150 Japanese Yen March 2018 17 (77 ) (60 ) Fuel derivative contracts Prepaid expenses and other 94,332 gallons December 2018 20,608 — 20,608
Schedule of realized and unrealized gains and losses of derivatives designated as cash flow hedges	The following table reflects the impact of cash flow hedges designated for hedge accounting treatment and their location within the Company's unaudited Consolidated Statements of Comprehensive Income. (Gain) loss recognized in AOCI on derivatives (effective portion) (Gain) loss reclassified from AOCI (Gain) loss recognized in Three months ended June 30, Three months ended June 30, Three months ended June 30, 2018 2017 2018 2017 2018 2017 (in thousands) Foreign currency derivatives $ (11,378 ) $ (2,505 ) $ 884 $ (480 ) $ — $ — (Gain) loss recognized in AOCI on derivatives (effective portion) (Gain) loss reclassified from AOCI (Gain) loss recognized in Six months ended June 30, Six months ended June 30, Six months ended June 30, 2018 2017 2018 2017 2018 2017 (in thousands) Foreign currency derivatives $ (569 ) $ 7,705 $ 2,105 $ (1,692 ) $ — $ —

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Schedule of expected maturities of long-term debt	As of June 30, 2018 , the expected maturities of long-term debt for the remainder of 2018 and the next four years, and thereafter, were as follows (in thousands): Remaining months in 2018 $ 28,275 2019 81,023 2020 29,545 2021 56,509 2022 63,622 Thereafter 236,531 $ 495,505

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2018
Leases [Abstract]
Schedule of Operating Leases	As of June 30, 2018 , the scheduled future minimum rental payments under operating and capital leases with non-cancellable basic terms of more than one year were as follows: Capital & Financing Leases Operating Leases Aircraft Other Aircraft Other (in thousands) Remaining in 2018 $ 9,675 $ 3,665 $ 53,421 $ 3,487 2019 19,350 6,561 98,327 6,735 2020 19,350 4,641 82,362 6,559 2021 19,350 4,566 66,259 6,669 2022 19,205 4,870 60,153 6,938 Thereafter 55,666 119,862 164,993 96,147 142,596 144,165 $ 525,515 $ 126,535 Less amounts representing interest (24,885 ) (54,188 ) Present value of minimum capital lease payments $ 117,711 $ 89,977
Schedule of Capital Leases	As of June 30, 2018 , the scheduled future minimum rental payments under operating and capital leases with non-cancellable basic terms of more than one year were as follows: Capital & Financing Leases Operating Leases Aircraft Other Aircraft Other (in thousands) Remaining in 2018 $ 9,675 $ 3,665 $ 53,421 $ 3,487 2019 19,350 6,561 98,327 6,735 2020 19,350 4,641 82,362 6,559 2021 19,350 4,566 66,259 6,669 2022 19,205 4,870 60,153 6,938 Thereafter 55,666 119,862 164,993 96,147 142,596 144,165 $ 525,515 $ 126,535 Less amounts representing interest (24,885 ) (54,188 ) Present value of minimum capital lease payments $ 117,711 $ 89,977

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2018
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 2018 2017 2018 2017 (in thousands) Service cost $ 1,962 $ 3,813 $ 3,924 $ 7,626 Other cost: Interest cost 5,009 7,259 10,018 14,518 Expected return on plan assets (5,588 ) (4,796 ) (11,176 ) (9,592 ) Recognized net actuarial loss 680 2,287 1,360 4,574 Total other components of the net periodic benefit cost 101 4,750 202 9,500 Net periodic benefit cost $ 2,063 $ 8,563 $ 4,126 $ 17,126

Commitments and Contingent Li35

Commitments and Contingent Liabilities (Tables)	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of firm aircraft and engine orders	As of June 30, 2018 , the Company had the following capital commitments consisting of firm aircraft and engine orders and purchase rights: Aircraft Type Firm Orders Purchase Rights Expected Delivery Dates A321neo aircraft 11 9 Between 2018 and 2020 Pratt & Whitney spare engines: A321neo spare engines 3 2 Between 2018 and 2019
Schedule of committed capital and operating expenditures	The gross committed expenditures and committed payments for those deliveries as of June 30, 2018 are detailed below: Capital Operating Total Committed (in thousands) Remaining in 2018 $ 207,042 $ 35,568 $ 242,610 2019 278,254 61,857 340,111 2020 47,978 56,483 104,461 2021 5,075 51,725 56,800 2022 5,075 51,922 56,997 Thereafter 38,067 216,069 254,136 $ 581,491 $ 473,624 $ 1,055,115

Supplemental Cash Flow Inform36

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jun. 30, 2018
Supplemental Cash Flow Information [Abstract]
Non-Cash Investing and Financing Activities	Non-cash investing and financing activities for the six months ended June 30, 2018 and 2017 were as follows: Six months ended June 30, 2018 2017 (in thousands) Investing and Financing Activities Not Affecting Cash: Property and equipment acquired through a capital lease $ 64,692 $ —

Condensed Consolidating Finan37

Condensed Consolidating Financial Information (Tables)	6 Months Ended
	Jun. 30, 2018
Condensed Financial Information Disclosure [Abstract]
Schedule of Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)	Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Three months ended June 30, 2018 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 713,127 $ 2,393 $ (73 ) $ 715,447 Operating Expenses: Wages and benefits — 171,555 — — 171,555 Aircraft fuel, including taxes and delivery — 153,026 — — 153,026 Maintenance materials and repairs — 59,468 1,502 — 60,970 Aircraft and passenger servicing — 38,626 — — 38,626 Commissions and other selling — 31,863 25 (35 ) 31,853 Aircraft rent — 29,865 — — 29,865 Other rentals and landing fees — 30,952 232 — 31,184 Depreciation and amortization — 31,902 1,017 — 32,919 Purchased services (2 ) 31,249 242 (15 ) 31,474 Other 2,099 37,435 1,536 (23 ) 41,047 Total 2,097 615,941 4,554 (73 ) 622,519 Operating Income (Loss) (2,097 ) 97,186 (2,161 ) — 92,928 Nonoperating Income (Expense): Undistributed net income of subsidiaries 81,099 — — (81,099 ) — Interest expense and amortization of debt discounts and issuance costs (3 ) (7,579 ) (45 ) — (7,627 ) Interest income 51 1,880 — — 1,931 Capitalized interest — 2,355 — — 2,355 Gains on fuel derivatives — 18,952 — — 18,952 Other, net — (2,752 ) — — (2,752 ) Total 81,147 12,856 (45 ) (81,099 ) 12,859 Income (Loss) Before Income Taxes 79,050 110,042 (2,206 ) (81,099 ) 105,787 Income tax expense (benefit) (430 ) 27,201 (464 ) — 26,307 Net Income (Loss) $ 79,480 $ 82,841 $ (1,742 ) $ (81,099 ) $ 79,480 Comprehensive Income (Loss) $ 89,424 $ 92,785 $ (1,742 ) $ (91,043 ) $ 89,424 Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Three months ended June 30, 2017 (a) Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 668,387 $ 1,837 $ (108 ) $ 670,116 Operating Expenses: Aircraft fuel, including taxes and delivery — 102,774 — — 102,774 Wages and benefits — 154,660 — — 154,660 Aircraft rent — 34,183 370 — 34,553 Maintenance materials and repairs — 52,137 429 — 52,566 Aircraft and passenger servicing — 35,636 — — 35,636 Commissions and other selling 18 32,151 19 (26 ) 32,162 Depreciation and amortization — 26,919 953 — 27,872 Other rentals and landing fees — 27,438 — — 27,438 Purchased services 177 27,646 247 (15 ) 28,055 Special items — 4,771 — — 4,771 Other 1,308 31,001 547 (67 ) 32,789 Total 1,503 529,316 2,565 (108 ) 533,276 Operating Income (Loss) (1,503 ) 139,071 (728 ) — 136,840 Nonoperating Income (Expense): Undistributed net income of subsidiaries 77,574 — — (77,574 ) — Interest expense and amortization of debt discounts and issuance costs — (7,711 ) — — (7,711 ) Interest income 70 1,397 — — 1,467 Capitalized interest — 2,082 — — 2,082 Losses on fuel derivatives — (4,712 ) — — (4,712 ) Other, net — (4,317 ) — — (4,317 ) Total 77,644 (13,261 ) — (77,574 ) (13,191 ) Income (Loss) Before Income Taxes 76,141 125,810 (728 ) (77,574 ) 123,649 Income tax expense (benefit) (756 ) 47,511 — — 46,755 Net Income (Loss) $ 76,897 $ 78,299 $ (728 ) $ (77,574 ) $ 76,894 Comprehensive Income (Loss) $ 79,577 $ 80,985 $ (728 ) $ (80,257 ) $ 79,577 (a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) . See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information. Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Six months ended June 30, 2018 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,376,539 $ 4,520 $ (200 ) $ 1,380,859 Operating Expenses: Aircraft fuel, including taxes and delivery — 286,472 — — 286,472 Wages and benefits — 340,264 — — 340,264 Aircraft rent — 61,765 — — 61,765 Maintenance materials and repairs — 116,962 2,149 — 119,111 Aircraft and passenger servicing — 75,144 — — 75,144 Commissions and other selling (5 ) 63,821 45 (83 ) 63,778 Depreciation and amortization — 63,177 1,987 — 65,164 Other rentals and landing fees — 61,767 232 — 61,999 Purchased services 88 62,117 420 (30 ) 62,595 Contract termination expense — 35,322 — — 35,322 Other 3,680 74,558 1,901 (87 ) 80,052 Total 3,763 1,241,369 6,734 (200 ) 1,251,666 Operating Income (Loss) (3,763 ) 135,170 (2,214 ) — 129,193 Nonoperating Income (Expense): Undistributed net income of subsidiaries 110,909 — — (110,909 ) — Interest expense and amortization of debt discounts and issuance costs (3 ) (16,134 ) (45 ) — (16,182 ) Interest income 116 3,289 — — 3,405 Capitalized interest — 4,593 — — 4,593 Gains on fuel derivatives — 23,569 — — 23,569 Other, net (4 ) (1,697 ) 5 — (1,696 ) Total 111,018 13,620 (40 ) (110,909 ) 13,689 Income (Loss) Before Income Taxes 107,255 148,790 (2,254 ) (110,909 ) 142,882 Income tax expense (benefit) (767 ) 36,101 (474 ) — 34,860 Net Income (Loss) $ 108,022 $ 112,689 $ (1,780 ) $ (110,909 ) $ 108,022 Comprehensive Income (Loss) $ 110,775 $ 115,442 $ (1,780 ) $ (113,662 ) $ 110,775 Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) Six months ended June 30, 2017 (a) Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) Operating Revenue $ — $ 1,272,954 $ 3,583 $ (212 ) $ 1,276,325 Operating Expenses: Aircraft fuel, including taxes and delivery — 206,312 — — 206,312 Wages and benefits — 305,713 — — 305,713 Aircraft rent — 67,318 370 — 67,688 Maintenance materials and repairs — 109,430 2,540 — 111,970 Aircraft and passenger servicing — 69,926 — — 69,926 Commissions and other selling 24 61,814 38 (72 ) 61,804 Depreciation and amortization — 53,436 1,904 — 55,340 Other rentals and landing fees — 55,774 — — 55,774 Purchased services 283 54,000 439 (30 ) 54,692 Special items — 23,450 — — 23,450 Other 2,460 61,454 982 (110 ) 64,786 Total 2,767 1,068,627 6,273 (212 ) 1,077,455 Operating Income (Loss) (2,767 ) 204,327 (2,690 ) — 198,870 Nonoperating Income (Expense): Undistributed net income of subsidiaries 111,306 — — (111,306 ) — Interest expense and amortization of debt discounts and issuance costs — (15,714 ) — — (15,714 ) Interest income 140 2,479 — — 2,619 Capitalized interest — 3,842 — — 3,842 Losses on fuel derivatives — (13,510 ) — — (13,510 ) Other, net — (6,240 ) — — (6,240 ) Total 111,446 (29,143 ) — (111,306 ) (29,003 ) Income (Loss) Before Income Taxes 108,679 175,184 (2,690 ) (111,306 ) 169,867 Income tax expense (benefit) (1,860 ) 61,187 — — 59,327 Net Income (Loss) $ 110,539 $ 113,997 $ (2,690 ) $ (111,306 ) $ 110,540 Comprehensive Income (Loss) $ 107,680 $ 111,136 $ (2,690 ) $ (108,446 ) $ 107,680 (a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) . See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
Schedule of Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheets June 30, 2018 Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current assets: Cash and cash equivalents $ 19,918 $ 306,679 $ 7,194 $ — $ 333,791 Restricted cash — 1,000 — — 1,000 Short-term investments — 259,313 — — 259,313 Accounts receivable, net 25 110,932 784 (248 ) 111,493 Spare parts and supplies, net — 36,387 — — 36,387 Prepaid expenses and other 181 99,056 78 — 99,315 Total 20,124 813,367 8,056 (248 ) 841,299 Property and equipment at cost — 2,610,253 88,344 — 2,698,597 Less accumulated depreciation and amortization — (598,700 ) (12,942 ) — (611,642 ) Property and equipment, net — 2,011,553 75,402 — 2,086,955 Long-term prepayments and other — 183,013 263 — 183,276 Deferred tax assets, net 33,086 — — (33,086 ) — Goodwill and other intangible assets, net — 120,407 924 — 121,331 Intercompany receivable — 405,270 — (405,270 ) — Investment in consolidated subsidiaries 1,261,977 — — (1,261,977 ) — TOTAL ASSETS $ 1,315,187 $ 3,533,610 $ 84,645 $ (1,700,581 ) $ 3,232,861 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ 1,178 $ 150,294 $ 2,038 $ (248 ) $ 153,262 Air traffic liability — 707,724 4,345 — 712,069 Other accrued liabilities — 143,728 275 — 144,003 Current maturities of long-term debt, less discount, and capital lease obligations — 113,496 30 — 113,526 Total 1,178 1,115,242 6,688 (248 ) 1,122,860 Long-term debt and capital lease obligations — 573,831 4,622 — 578,453 Intercompany payable 393,962 — 11,308 (405,270 ) — Other liabilities and deferred credits: =sum(C32:I32) Accumulated pension and other post-retirement benefit obligations — 218,426 — — 218,426 Other liabilities and deferred credits — 256,798 1,113 — 257,911 Deferred tax liabilities, net — 168,250 — (33,086 ) 135,164 Total — 643,474 1,113 (33,086 ) 611,501 Shareholders’ equity 920,047 1,201,063 60,914 (1,261,977 ) 920,047 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 1,315,187 $ 3,533,610 $ 84,645 $ (1,700,581 ) $ 3,232,861 Condensed Consolidating Balance Sheets December 31, 2017 (a) Parent Issuer / Subsidiary Non-Guarantor Eliminations Consolidated (in thousands) ASSETS Current assets: Cash and cash equivalents $ 57,405 $ 125,861 $ 7,687 $ — $ 190,953 Restricted cash — 1,000 — — 1,000 Short-term investments — 269,297 — — 269,297 Accounts receivable, net 25 139,008 1,455 (209 ) 140,279 Spare parts and supplies, net — 35,361 — — 35,361 Prepaid expenses and other 171 78,933 82 — 79,186 Total 57,601 649,460 9,224 (209 ) 716,076 Property and equipment at cost — 2,326,249 74,562 — 2,400,811 Less accumulated depreciation and amortization — (546,831 ) (11,717 ) — (558,548 ) Property and equipment, net — 1,779,418 62,845 — 1,842,263 Long-term prepayments and other — 193,449 183 — 193,632 Deferred tax assets, net 31,845 — — (31,845 ) — Goodwill and other intangible assets, net — 120,695 1,155 — 121,850 Intercompany receivable — 392,791 — (392,791 ) — Investment in consolidated subsidiaries 1,137,941 — — (1,137,941 ) — TOTAL ASSETS $ 1,227,387 $ 3,135,813 $ 73,407 $ (1,562,786 ) $ 2,873,821 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ 622 $ 138,818 $ 1,574 $ (209 ) $ 140,805 Air traffic liability — 584,366 4,727 — 589,093 Other accrued liabilities 32 147,211 350 — 147,593 Current maturities of long-term debt, less discount, and capital lease obligations — 59,470 — — 59,470 Total 654 929,865 6,651 (209 ) 936,961 Long-term debt and capital lease obligations — 511,201 — — 511,201 Intercompany payable 381,608 — 11,183 (392,791 ) — Other liabilities and deferred credits: 0 Accumulated pension and other post-retirement benefit obligations — 220,788 — — 220,788 Other liabilities and deferred credits — 224,500 1,105 — 225,605 Deferred tax liabilities, net — 165,986 — (31,845 ) 134,141 Total — 611,274 1,105 (31,845 ) 580,534 Shareholders’ equity 845,125 1,083,473 54,468 (1,137,941 ) 845,125 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 1,227,387 $ 3,135,813 $ 73,407 $ (1,562,786 ) $ 2,873,821 (a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) . See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
Schedule of Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2018 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Provided By (Used In) Operating Activities $ (2,603 ) $ 375,052 $ 1,312 $ — $ 373,761 Cash Flows From Investing Activities: Net payments to affiliates (8,700 ) (8,721 ) — 17,421 — Additions to property and equipment, including pre-delivery deposits — (247,607 ) (10,505 ) — (258,112 ) Proceeds from disposition of property and equipment — 987 — — 987 Purchases of investments — (110,092 ) — — (110,092 ) Sales of investments — 119,236 — — 119,236 Net cash used in investing activities (8,700 ) (246,197 ) (10,505 ) 17,421 (247,981 ) Cash Flows From Financing Activities: Long-term borrowings — 86,500 — — 86,500 Repayments of long-term debt and capital lease obligations — (30,047 ) — — (30,047 ) Debt issuance costs — (889 ) — — (889 ) Dividend payments (12,238 ) — — — (12,238 ) Net payments from affiliates 8,721 — 8,700 (17,421 ) — Repurchases of common stock (22,745 ) — — — (22,745 ) Other 78 (3,601 ) — — (3,523 ) Net cash provided by (used in) financing activities (26,184 ) 51,963 8,700 (17,421 ) 17,058 Net increase (decrease) in cash and cash equivalents (37,487 ) 180,818 (493 ) — 142,838 Cash, cash equivalents, & restricted cash - Beginning of Period 57,405 126,861 7,687 — 191,953 Cash, cash equivalents, & restricted cash - End of Period $ 19,918 $ 307,679 $ 7,194 $ — $ 334,791 Condensed Consolidating Statements of Cash Flows Six months ended June 30, 2017 Parent Issuer / Subsidiary Non- Eliminations Consolidated (in thousands) Net Cash Provided By (Used In) Operating Activities $ (2,498 ) $ 339,242 $ (1,304 ) $ — $ 335,440 Cash Flows From Investing Activities: Net payments to affiliates — (7,960 ) — 7,960 — Additions to property and equipment, including pre-delivery deposits — (94,250 ) (2,028 ) — (96,278 ) Proceeds from disposition of property and equipment — 33,511 — — 33,511 Purchases of investments — (107,533 ) — — (107,533 ) Sales of investments — 125,881 — — 125,881 Net cash used in investing activities — (50,351 ) (2,028 ) 7,960 (44,419 ) Cash Flows From Financing Activities: Repayments of long-term debt and capital lease obligations — (30,484 ) — — (30,484 ) Net payments from affiliates 7,960 — — (7,960 ) — Repurchases of Common Stock (4,299 ) — — — (4,299 ) Other 86 (7,621 ) — — (7,535 ) Net cash provided by (used in) financing activities 3,747 (38,105 ) — (7,960 ) (42,318 ) Net increase (decrease) in cash and cash equivalents 1,249 250,786 (3,332 ) — 248,703 Cash, cash equivalents, & restricted cash - Beginning of Period 67,629 254,985 8,377 — 330,991 Cash, cash equivalents, & restricted cash - End of Period $ 68,878 $ 505,771 $ 5,045 $ — $ 579,694

Significant Accounting Polici38

Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018USD ($)aircraft$ / shares	Jun. 30, 2017USD ($)$ / shares		Jun. 30, 2018USD ($)aircraft$ / shares	Jun. 30, 2017USD ($)$ / shares		Dec. 31, 2017USD ($)		Dec. 31, 2015USD ($)
Operating Revenue:
Total	$ 715,447	$ 670,116	[1],[2]	$ 1,380,859	$ 1,276,325	[1],[2]
Operating Expenses	622,519	533,276	[1],[2]	1,251,666	1,077,455	[1],[2]
Operating Income	92,928	136,840	[1],[2]	129,193	198,870	[1],[2]
Nonoperating Income (Expense)	12,859	(13,191)	[1],[2]	13,689	(29,003)	[1],[2]
Income tax expense	26,307	46,755	[1],[2]	34,860	59,327	[1],[2]
Net Income (Loss)	$ 79,480	$ 76,894	[1],[2]	$ 108,022	$ 110,540	[1],[2]
Net Income Per Common Stock Share:
Basic (in dollars per share) | $ / shares	$ 1.57	$ 1.43	[1]	$ 2.12	$ 2.06	[1]
Diluted (in dollars per share) | $ / shares	$ 1.56	$ 1.43	[1]	$ 2.12	$ 2.05	[1]
ASSETS
Prepaid expenses and other	$ 99,315			$ 99,315			$ 79,186	[1],[2]
Current Liabilities:
Other accrued liabilities	144,003			144,003			147,593	[1],[2]
Noncurrent Liabilities:
Other liabilities and deferred credits	257,911			257,911			225,605	[1],[2]
Deferred tax liabilities, net	135,164			135,164			134,141	[1],[2]
Shareholders' Equity:
Accumulated income	$ 866,180			$ 866,180			793,134	[1]
Number of aircraft treated as an operating lease | aircraft	17			17
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact to equity									$ 76,000
Frequent flyer revenue, transportation component
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue recognition period	23 months			23 months
Operating Revenue:
Total	$ 36,756	$ 33,479		$ 70,401	$ 63,177
Current Liabilities:
Air traffic liability	372,200			372,200			321,900
Passenger
Operating Revenue:
Total	655,162	624,006	[1]	1,266,762	1,187,758	[1]
Other
Operating Revenue:
Total	$ 60,285	46,110	[1]	$ 114,097	88,567	[1]
Air traffic liability
Current Liabilities:
Air traffic liability							589,093
As Reported | Accounting Standards Update 2014-09
Operating Revenue:
Total		675,335			1,289,520
Operating Expenses		532,786			1,079,677
Operating Income		142,549			209,843
Nonoperating Income (Expense)		(13,191)			(29,003)
Income tax expense		48,925			63,495
Net Income (Loss)		$ 80,433			$ 117,345
Net Income Per Common Stock Share:
Basic (in dollars per share) | $ / shares		$ 1.50			$ 2.19
Diluted (in dollars per share) | $ / shares		$ 1.49			$ 2.18
ASSETS
Prepaid expenses and other							65,196
Current Liabilities:
Other accrued liabilities							146,283
Noncurrent Liabilities:
Other liabilities and deferred credits							95,636
Deferred tax liabilities, net							174,344
Shareholders' Equity:
Accumulated income							913,951
As Reported | Passenger | Accounting Standards Update 2014-09
Operating Revenue:
Total		$ 593,210			$ 1,130,800
As Reported | Other | Accounting Standards Update 2014-09
Operating Revenue:
Total		82,125			158,720
As Reported | Air traffic liability | Accounting Standards Update 2014-09
Current Liabilities:
Air traffic liability							545,362
Adjustments | Accounting Standards Update 2014-09
Operating Revenue:
Total		(5,219)			(13,195)
Operating Expenses		490			(2,222)
Operating Income		(5,709)			(10,973)
Nonoperating Income (Expense)		0			0
Income tax expense		(2,170)			(4,168)
Net Income (Loss)		$ (3,539)			$ (6,805)
Net Income Per Common Stock Share:
Basic (in dollars per share) | $ / shares		$ (0.07)			$ (0.13)
Diluted (in dollars per share) | $ / shares		$ (0.06)			$ (0.13)
ASSETS
Prepaid expenses and other							13,990
Current Liabilities:
Other accrued liabilities							1,310
Noncurrent Liabilities:
Other liabilities and deferred credits							129,969
Deferred tax liabilities, net							(40,203)
Shareholders' Equity:
Accumulated income							(120,817)
Adjustments | Passenger | Accounting Standards Update 2014-09
Operating Revenue:
Total		$ 30,796			$ 56,958
Adjustments | Other | Accounting Standards Update 2014-09
Operating Revenue:
Total		$ (36,015)			$ (70,153)
Adjustments | Air traffic liability | Accounting Standards Update 2014-09
Current Liabilities:
Air traffic liability							$ 43,731
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Accumulated Other Comprehensi39

Accumulated Other Comprehensive Income (Loss) - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Amounts reclassified from AOCI
Foreign currency derivative losses (gains)	$ (715,447)	$ (670,116)	[1],[2]	$ (1,380,859)	$ (1,276,325)	[1],[2]
Total before tax	(105,787)	(123,649)	[1],[2]	(142,882)	(169,867)	[1],[2]
Tax expense (benefit)	26,307	46,755	[1],[2]	34,860	59,327	[1],[2]
Total, net of tax	(79,480)	(76,894)	[1],[2]	(108,022)	(110,540)	[1],[2]
Total reclassifications for the period	1,202	1,085		2,641	1,748
Derivatives designated as hedging instruments under ASC 815 | Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Total before tax	884	(480)		2,105	(1,692)
Tax expense (benefit)	(216)	182		(515)	641
Total, net of tax	668	(298)		1,590	(1,051)
Defined benefit plan
Amounts reclassified from AOCI
Amortization of defined benefit plan items	680	2,288		1,360	4,576
Tax benefit	(166)	(898)		(333)	(1,765)
Total reclassifications for the period	514	1,390		1,027	2,811
Actuarial loss
Amounts reclassified from AOCI
Amortization of defined benefit plan items	624	2,228		1,248	4,456
Prior service cost
Amounts reclassified from AOCI
Amortization of defined benefit plan items	56	60		112	120
Short-term investments | Amount reclassified from accumulated other comprehensive income (loss)
Amounts reclassified from AOCI
Realized losses (gain) on sales of investments, net	26	(12)		31	(20)
Total before tax	26	(12)		31	(20)
Tax expense (benefit)	(6)	5		(7)	8
Total, net of tax	20	(7)		24	(12)
Passenger
Amounts reclassified from AOCI
Foreign currency derivative losses (gains)	(655,162)	(624,006)	[1]	(1,266,762)	(1,187,758)	[1]
Passenger | Derivatives designated as hedging instruments under ASC 815 | Amount reclassified from accumulated other comprehensive income (loss) | Foreign currency derivative losses (gains)
Amounts reclassified from AOCI
Foreign currency derivative losses (gains)	$ 884	$ (480)		$ 2,105	$ (1,692)
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Accumulated Other Comprehensi40

Accumulated Other Comprehensive Income (Loss) - Roll Forward (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance	[1],[2]				$ 845,125
Other comprehensive income (loss) before reclassifications, net of tax		$ 8,742	$ 1,598		112	$ (4,608)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax		1,202	1,085		2,641	1,748
Net current-period other comprehensive income (loss)		9,944	2,683	[1]	2,753	(2,860)	[1]
Ending balance		920,047			920,047
Accumulated net gain (loss) from cash flow hedges | Foreign Currency Derivatives
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance		(5,995)	(26)		1,249	7,071
Other comprehensive income (loss) before reclassifications, net of tax		8,595	1,559		429	(4,785)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax		668	(298)		1,590	(1,051)
Net current-period other comprehensive income (loss)		9,263	1,261		2,019	(5,836)
Ending balance		3,268	1,235		3,268	1,235
Defined Benefit Plan Items
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance		(75,440)	(108,734)		(75,953)	(110,202)
Other comprehensive income (loss) before reclassifications, net of tax		0	0		0	47
Amounts reclassified from accumulated other comprehensive income (loss), net of tax		514	1,390		1,027	2,811
Net current-period other comprehensive income (loss)		514	1,390		1,027	2,858
Ending balance		(74,926)	(107,344)		(74,926)	(107,344)
Short-Term Investments
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance		(1,020)	(276)		(560)	(362)
Other comprehensive income (loss) before reclassifications, net of tax		147	39		(317)	130
Amounts reclassified from accumulated other comprehensive income (loss), net of tax		20	(7)		24	(12)
Net current-period other comprehensive income (loss)		167	32		(293)	118
Ending balance		(853)	(244)		(853)	(244)
Total
Rollforward of Accumulated other comprehensive income (loss)
Beginning balance		(82,455)	(109,036)		(75,264)	(103,493)
Ending balance		$ (72,511)	$ (106,353)		$ (72,511)	$ (106,353)
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Potential Dilution (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net Income	$ 79,480	$ 76,894	[1],[2]	$ 108,022	$ 110,540	[1],[2]
Denominator:
Weighted average common stock shares outstanding - Basic (in shares)	50,776	53,626	[1]	50,915	53,595	[1]
Assumed exercise of stock options and awards (in shares)	102	288		123	353
Weighted average common stock shares outstanding - Diluted (in shares)	50,878	53,914	[1]	51,038	53,948	[1]
Net Income Per Share
Basic (in dollars per share)	$ 1.57	$ 1.43	[1]	$ 2.12	$ 2.06	[1]
Diluted (in dollars per share)	$ 1.56	$ 1.43	[1]	$ 2.12	$ 2.05	[1]
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Earnings Per Share - Stock Repu

Earnings Per Share - Stock Repurchase Program and Dividends (Details) - USD ($) $ / shares in Units, shares in Thousands	1 Months Ended	3 Months Ended				6 Months Ended
	Nov. 30, 2017	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	[1]	Jun. 30, 2018	Jun. 30, 2017	[1]
Earnings Per Share [Abstract]
Approved stock repurchase amount	$ 100,000,000
Period of approved stock repurchase program	2 years
Amount spent to repurchase shares		$ 2,500,000				$ 22,800,000
Number of shares repurchased and retired (in shares)		65				614
Remaining authorized repurchase amount		$ 77,200,000				$ 77,200,000
Cash dividend declared (in dollars per share)		$ 0.12	$ 0.12	$ 0		$ 0.24	$ 0
Declared and paid cash dividend						$ 12,200,000
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation Of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Total	$ 715,447	$ 670,116	[1],[2]	$ 1,380,859	$ 1,276,325	[1],[2]
Passenger revenue, excluding frequent flyer
Disaggregation of Revenue [Line Items]
Total	618,406	590,527		1,196,361	1,124,581
Frequent flyer revenue, transportation component
Disaggregation of Revenue [Line Items]
Total	36,756	33,479		70,401	63,177
Passenger Revenue
Disaggregation of Revenue [Line Items]
Total	655,162	624,006	[1]	1,266,762	1,187,758	[1]
Other revenue (e.g. cargo and other miscellaneous)
Disaggregation of Revenue [Line Items]
Total	41,539	33,894		80,229	66,035
Frequent flyer revenue, marketing and brand component
Disaggregation of Revenue [Line Items]
Total	18,746	12,216		33,868	22,532
Other Revenue
Disaggregation of Revenue [Line Items]
Total	60,285	46,110	[1]	114,097	88,567	[1]
Domestic
Disaggregation of Revenue [Line Items]
Total	528,476	501,724		1,020,678	952,521
Pacific
Disaggregation of Revenue [Line Items]
Total	$ 186,971	$ 168,392		$ 360,181	$ 323,804
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)		Jun. 30, 2018USD ($)segmentline_of_business	Jun. 30, 2017USD ($)		Dec. 31, 2017USD ($)
Disaggregation of Revenue [Line Items]
Number of lines of business | line_of_business				1
Number of segments | segment				1
Total	$ 715,447	$ 670,116	[1],[2]	$ 1,380,859	$ 1,276,325	[1],[2]
Contract asset	19,900			19,900			$ 16,700
Contract assets expensed during the period	23,800	24,300		47,700	46,800
Passenger revenue, excluding frequent flyer
Disaggregation of Revenue [Line Items]
Total	618,406	590,527		1,196,361	1,124,581
Air traffic liability	$ 536,300			$ 536,300			422,600
Revenue recognition period	12 months			12 months
Air traffic revenue recognized	$ 293,100	294,500		$ 332,500	295,900
Frequent flyer revenue, transportation component
Disaggregation of Revenue [Line Items]
Total	36,756	$ 33,479		70,401	$ 63,177
Air traffic liability	$ 372,200			$ 372,200			$ 321,900
Revenue recognition period	23 months			23 months
Weighted average ETV period				12 months
Period for mile expiration				18 months
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Short-Term Investments (Details

Short-Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Marketable Securities [Line Items]
Amortized Cost	$ 260,560	$ 270,154
Gross Unrealized Gains	21	10
Gross Unrealized Losses	(1,268)	(867)
Contractual Maturities
Under 1 Year	149,684
1 to 5 Years	109,629
Total	259,313	269,297
Corporate debt
Marketable Securities [Line Items]
Amortized Cost	154,333	165,610
Gross Unrealized Gains	21	8
Gross Unrealized Losses	(1,002)	(535)
Contractual Maturities
Under 1 Year	69,250
1 to 5 Years	84,102
Total	153,352	165,083
U.S. government and agency debt
Marketable Securities [Line Items]
Amortized Cost	55,081	59,054
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(182)	(215)
Contractual Maturities
Under 1 Year	44,011
1 to 5 Years	10,888
Total	54,899	58,840
Municipal bonds
Marketable Securities [Line Items]
Amortized Cost	16,684	21,517
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(49)	(104)
Contractual Maturities
Under 1 Year	9,643
1 to 5 Years	6,992
Total	16,635	21,413
Other fixed income securities
Marketable Securities [Line Items]
Amortized Cost	34,462	23,973
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(35)	(13)
Contractual Maturities
Under 1 Year	26,780
1 to 5 Years	7,647
Total	$ 34,427	$ 23,961

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Financial Assets and Liabilities, Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value Measurements
Short-term investments	$ 259,313	$ 269,297	[1],[2]
Recurring basis
Fair Value Measurements
Cash equivalents	175,486	62,310
Restricted cash	1,000	1,000
Short-term investments	259,313	269,297
Total assets measured at fair value	469,689	357,515
Total liabilities measured at fair value	747	1,713
Recurring basis | Crude oil call options
Fair Value Measurements
Fuel derivative contracts	28,216	20,272
Recurring basis | Foreign currency derivatives
Fair Value Measurements
Fuel derivative contracts	5,674	4,300
Derivative contracts	747	1,713
Recurring basis | Jet fuel swaps
Fair Value Measurements
Fuel derivative contracts		336
Recurring basis | Level 1
Fair Value Measurements
Cash equivalents	128,131	27,807
Restricted cash	1,000	1,000
Short-term investments	0	0
Total assets measured at fair value	129,131	28,807
Total liabilities measured at fair value	0	0
Recurring basis | Level 1 | Crude oil call options
Fair Value Measurements
Fuel derivative contracts	0	0
Recurring basis | Level 1 | Foreign currency derivatives
Fair Value Measurements
Fuel derivative contracts	0	0
Derivative contracts	0	0
Recurring basis | Level 1 | Jet fuel swaps
Fair Value Measurements
Fuel derivative contracts		0
Recurring basis | Level 2
Fair Value Measurements
Cash equivalents	47,355	34,503
Restricted cash	0	0
Short-term investments	259,313	269,297
Total assets measured at fair value	340,558	328,708
Total liabilities measured at fair value	747	1,713
Recurring basis | Level 2 | Crude oil call options
Fair Value Measurements
Fuel derivative contracts	28,216	20,272
Recurring basis | Level 2 | Foreign currency derivatives
Fair Value Measurements
Fuel derivative contracts	5,674	4,300
Derivative contracts	747	1,713
Recurring basis | Level 2 | Jet fuel swaps
Fair Value Measurements
Fuel derivative contracts		336
Recurring basis | Level 3
Fair Value Measurements
Cash equivalents	0	0
Restricted cash	0	0
Short-term investments	0	0
Total assets measured at fair value	0	0
Total liabilities measured at fair value	0	0
Recurring basis | Level 3 | Crude oil call options
Fair Value Measurements
Fuel derivative contracts	0	0
Recurring basis | Level 3 | Foreign currency derivatives
Fair Value Measurements
Fuel derivative contracts	0	0
Derivative contracts	$ 0	0
Recurring basis | Level 3 | Jet fuel swaps
Fair Value Measurements
Fuel derivative contracts		$ 0
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Fair Value Measurements - Sch47

Fair Value Measurements - Schedule of Certain Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value Measurements
Carrying value of debt	$ 495,504	$ 433,072
Recurring basis
Fair Value Measurements
Fair value of debt	478,893	444,099
Recurring basis | Level 1
Fair Value Measurements
Fair value of debt	0	0
Recurring basis | Level 2
Fair Value Measurements
Fair value of debt	0	0
Recurring basis | Level 3
Fair Value Measurements
Fair value of debt	$ 478,893	$ 444,099

Financial Derivative Instrume48

Financial Derivative Instruments - Risk Management (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Derivative instrument
Gains (losses) on fuel derivatives recorded as nonoperating income (expense)	$ 18,952	$ (4,712)	[1],[2]	$ 23,569	$ (13,510)	[1],[2]
Derivatives not designated as hedges | Fuel derivative contracts
Derivative instrument
Gains (losses) realized at settlement	10,827	(1,902)		16,488	687
Reversal of prior period unrealized amounts	(10,748)	3,441		(11,792)	(4,506)
Unrealized gains (losses) that will settle in future periods	18,873	(6,251)		18,873	(9,691)
Gains (losses) on fuel derivatives recorded as nonoperating income (expense)	$ 18,952	$ (4,712)		23,569	$ (13,510)
Derivatives designated as hedges | Foreign currency derivatives
Derivative instrument
Expected reclassification of net gain				$ 3,600
Reclassification estimated time period				12 months
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Financial Derivative Instrume49

Financial Derivative Instruments - Derivative Position (Details) ¥ in Thousands, gal in Thousands, $ in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018JPY (¥)gal	Dec. 31, 2017JPY (¥)gal	Jun. 30, 2018AUD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017AUD ($)	Dec. 31, 2017USD ($)
Derivatives designated as hedges | Foreign currency derivatives | Prepaid expenses and other
Fair Value of Derivatives
Notional Amount	¥ 16,987,750	¥ 16,732,375	$ 51,428		$ 47,805
Gross fair value of assets, current				$ 4,600		$ 3,737
Gross fair value of liabilities, current				(558)		(1,441)
Net derivative position				4,042		2,296
Derivatives designated as hedges | Foreign currency derivatives | Long-term prepayments and other
Fair Value of Derivatives
Notional Amount	4,795,400	4,666,700	8,940		9,180
Gross fair value of assets, noncurrent				810		546
Gross fair value of liabilities, noncurrent				(185)		(195)
Net derivative position				625		351
Derivatives not designated as hedges | Foreign currency derivatives | Prepaid expenses and other
Fair Value of Derivatives
Notional Amount	¥ 1,216,250		$ 4,489
Gross fair value of assets, current				264
Gross fair value of liabilities, current				(4)
Net derivative position				260
Derivatives not designated as hedges | Foreign currency derivatives | Other accrued liabilities
Fair Value of Derivatives
Notional Amount		¥ 866,150			$ 3,148
Gross fair value of assets, current						17
Gross fair value of liabilities, current						(77)
Net derivative position						(60)
Derivatives not designated as hedges | Fuel derivative contracts | Prepaid expenses and other
Fair Value of Derivatives
Notional Amount (in gallons) | gal	94,080	94,332
Gross fair value of assets, current				28,216		20,608
Gross fair value of liabilities, current				0		0
Net derivative position				$ 28,216		$ 20,608

Financial Derivative Instrume50

Financial Derivative Instruments - Impact of Cash Flow Hedges (Details) - Cash Flow Hedging - Foreign currency derivatives - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Gains (losses) for designated hedge contracts
(Gain) loss recognized in AOCI on derivatives (effective portion)	$ (11,378)	$ (2,505)	$ (569)	$ 7,705
(Gain) loss reclassified from AOCI into income (effective portion)	884	(480)	2,105	(1,692)
(Gain) loss recognized in nonoperating (income) expense (ineffective portion)	$ 0	$ 0	$ 0	$ 0

Financial Derivative Instrume51

Financial Derivative Instruments - Risk and Collateral (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Collateral posted with counterparties	$ 0	$ 0

Debt (Details)

Debt (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2018USD ($)
Debt Instrument [Line Items]
Remaining months in 2018	$ 28,275
2,019	81,023
2,020	29,545
2,021	56,509
2,022	63,622
Thereafter	236,531
Long-term Debt	495,505
Secured Debt | Japanese Yen Denominated Debt
Debt Instrument [Line Items]
Debt, total principal value	$ 86,500
Debt, duration of loan	12 years
Minimum | Secured Debt | Japanese Yen Denominated Debt
Debt Instrument [Line Items]
Debt, fixed installment coupon rate	1.01%
Maximum | Secured Debt | Japanese Yen Denominated Debt
Debt Instrument [Line Items]
Debt, fixed installment coupon rate	1.05%

Leases (Details)

Leases (Details) $ in Thousands	Jun. 30, 2018USD ($)
Aircraft
Capital & Financing Leases
Remaining in 2018	$ 9,675
2,019	19,350
2,020	19,350
2,021	19,350
2,022	19,205
Thereafter	55,666
Total future minimum rental payments	142,596
Less amounts representing interest	(24,885)
Present value of minimum capital lease payments	117,711
Operating Leases
Remaining in 2018	53,421
2,019	98,327
2,020	82,362
2,021	66,259
2,022	60,153
Thereafter	164,993
Total future minimum rental payments	525,515
Other
Capital & Financing Leases
Remaining in 2018	3,665
2,019	6,561
2,020	4,641
2,021	4,566
2,022	4,870
Thereafter	119,862
Total future minimum rental payments	144,165
Less amounts representing interest	(54,188)
Present value of minimum capital lease payments	89,977
Operating Leases
Remaining in 2018	3,487
2,019	6,735
2,020	6,559
2,021	6,669
2,022	6,938
Thereafter	96,147
Total future minimum rental payments	$ 126,535

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	Aug. 31, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Components of Net Period Benefit Cost
Service cost			$ 1,962,000	$ 3,813,000	$ 3,924,000	$ 7,626,000
Other cost:
Interest cost			5,009,000	7,259,000	10,018,000	14,518,000
Expected return on plan assets			(5,588,000)	(4,796,000)	(11,176,000)	(9,592,000)
Recognized net actuarial loss			680,000	2,287,000	1,360,000	4,574,000
Total other components of the net periodic benefit cost			101,000	4,750,000	202,000	9,500,000
Net periodic benefit cost			2,063,000	8,563,000	4,126,000	17,126,000
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contribution			$ 0	$ 8,000,000	$ 0	$ 14,400,000
Merged Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Cash payment to fund the plan	$ 18,500,000
HRA and Post-65 medical plan | Air Line Pilots Association
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Cash payment to fund the plan	$ 101,900,000
Ratified agreement, term		63 months

Commitments and Contingent Li55

Commitments and Contingent Liabilities - Capital Commitments and Operating Expenditures (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)purchase_rightorder
Total Committed Expenditures
Remaining in 2018	$ 242,610
2,019	340,111
2,020	104,461
2,021	56,800
2,022	56,997
Thereafter	254,136
Total	1,055,115
Capital
Total Committed Expenditures
Remaining in 2018	207,042
2,019	278,254
2,020	47,978
2,021	5,075
2,022	5,075
Thereafter	38,067
Total	$ 581,491
Capital | A321neo aircraft
Long-term Purchase Commitment [Line Items]
Number of aircraft firm orders | order	11
Number of aircraft purchase rights | purchase_right	9
Capital | A321neo aircraft | Pratt & Whitney spare engines
Long-term Purchase Commitment [Line Items]
Spare engine firm orders | order	3
Spare engine purchase rights | purchase_right	2
Operating
Total Committed Expenditures
Remaining in 2018	$ 35,568
2,019	61,857
2,020	56,483
2,021	51,725
2,022	51,922
Thereafter	216,069
Total	$ 473,624

Commitments and Contingent Li56

Commitments and Contingent Liabilities - Narrative (Details) $ in Millions	1 Months Ended
	Jul. 25, 2018aircraft	Feb. 28, 2018aircraft	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Credit Card Processing Agreements
Long-term Purchase Commitment [Line Items]
Restricted cash | $			$ 1	$ 1
Maximum limit of holdback (up to)			100.00%
A-330-800-Neo
Long-term Purchase Commitment [Line Items]
Number of aircrafts terminated		6
Number of aircraft purchase rights		6
Subsequent Event | B787-9 aircraft
Long-term Purchase Commitment [Line Items]
Number of aircrafts under purchase agreement	10
Number of aircrafts with purchase rights under purchase agreement	10

Contract Terminations Expense57

Contract Terminations Expense and Special Items - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended			6 Months Ended
	Feb. 28, 2018aircraft	Jan. 31, 2018USD ($)aircraftengine	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)		Jun. 30, 2018USD ($)contract	Jun. 30, 2017USD ($)		Apr. 30, 2017aircraft
Extraordinary Item [Line Items]
Number of terminated contracts | contract						2
Contract terminations expense			$ 0	$ 0	[1]	$ 35,322	$ 0	[1]
Air Line Pilots Association
Extraordinary Item [Line Items]
Collective bargaining charge							18,700
A-330-800-Neo
Extraordinary Item [Line Items]
Number of aircrafts terminated | aircraft	6
Number of aircraft purchase rights | aircraft	6
B767-300 aircraft
Extraordinary Item [Line Items]
Sale leaseback agreement, contract exit costs		$ 67,100
Aircraft | B767-300 aircraft
Extraordinary Item [Line Items]
Sale lease-back transaction, number of aircraft | aircraft		3							3
Number of engines under sale-leaseback | engine		2
Loss on sale of asset				$ 4,800			$ 4,800
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	24.90%	37.80%	24.40%	34.90%

Supplemental Cash Flow Inform59

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through a capital lease	$ 64,692	$ 0

Condensed Consolidating Finan60

Condensed Consolidating Financial Information - Narrative and Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) (Details) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2018USD ($)pass_through_trust	Jun. 30, 2017USD ($)		Jun. 30, 2018USD ($)pass_through_trust	Jun. 30, 2017USD ($)
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Total		$ 715,447	$ 670,116	[1],[2]	$ 1,380,859	$ 1,276,325	[1],[2]
Operating Expenses:
Wages and benefits		171,555	154,660	[1],[2]	340,264	305,713	[1],[2]
Aircraft fuel, including taxes and delivery		153,026	102,774	[1],[2]	286,472	206,312	[1],[2]
Maintenance materials and repairs		60,970	52,566	[1],[2]	119,111	111,970	[1],[2]
Aircraft and passenger servicing		38,626	35,636	[1],[2]	75,144	69,926	[1],[2]
Commissions and other selling		31,853	32,162	[1],[2]	63,778	61,804	[1],[2]
Aircraft rent		29,865	34,553	[1],[2]	61,765	67,688	[1],[2]
Other rentals and landing fees		31,184	27,438	[1],[2]	61,999	55,774	[1],[2]
Depreciation and amortization		32,919	27,872	[1],[2]	65,164	55,340	[1],[2]
Purchased services		31,474	28,055	[1],[2]	62,595	54,692	[1],[2]
Contract termination expense		0	0	[1]	35,322	0	[1]
Special items		0	4,771	[1],[2]	0	23,450	[1],[2]
Other		41,047	32,789	[1],[2]	80,052	64,786	[1],[2]
Total		622,519	533,276	[1],[2]	1,251,666	1,077,455	[1],[2]
Operating Income		92,928	136,840	[1],[2]	129,193	198,870	[1],[2]
Nonoperating Income (Expense):
Undistributed net income of subsidiaries		0	0	[2]	0	0	[2]
Interest expense and amortization of debt discounts and issuance costs		(7,627)	(7,711)	[1],[2]	(16,182)	(15,714)	[1],[2]
Interest income		1,931	1,467	[1],[2]	3,405	2,619	[1],[2]
Capitalized interest		2,355	2,082	[1],[2]	4,593	3,842	[1],[2]
Gains (losses) on fuel derivatives		18,952	(4,712)	[1],[2]	23,569	(13,510)	[1],[2]
Other, net		(2,752)	(4,317)	[1],[2]	(1,696)	(6,240)	[1],[2]
Total		12,859	(13,191)	[1],[2]	13,689	(29,003)	[1],[2]
Income Before Income Taxes		105,787	123,649	[1],[2]	142,882	169,867	[1],[2]
Income tax expense (benefit)		26,307	46,755	[1],[2]	34,860	59,327	[1],[2]
Net Income (Loss)		79,480	76,894	[1],[2]	108,022	110,540	[1],[2]
Comprehensive Income (Loss)		89,424	79,577	[1],[2]	110,775	107,680	[1],[2]
Eliminations
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Total		(73)	(108)	[2]	(200)	(212)	[2]
Operating Expenses:
Wages and benefits		0	0	[2]	0	0	[2]
Aircraft fuel, including taxes and delivery		0	0	[2]	0	0	[2]
Maintenance materials and repairs		0	0	[2]	0	0	[2]
Aircraft and passenger servicing		0	0	[2]	0	0	[2]
Commissions and other selling		(35)	(26)	[2]	(83)	(72)	[2]
Aircraft rent		0	0	[2]	0	0	[2]
Other rentals and landing fees		0	0	[2]	0	0	[2]
Depreciation and amortization		0	0	[2]	0	0	[2]
Purchased services		(15)	(15)	[2]	(30)	(30)	[2]
Contract termination expense					0
Special items	[2]		0			0
Other		(23)	(67)	[2]	(87)	(110)	[2]
Total		(73)	(108)	[2]	(200)	(212)	[2]
Operating Income		0	0	[2]	0	0	[2]
Nonoperating Income (Expense):
Undistributed net income of subsidiaries		(81,099)	(77,574)	[2]	(110,909)	(111,306)	[2]
Interest expense and amortization of debt discounts and issuance costs		0	0	[2]	0	0	[2]
Interest income		0	0	[2]	0	0	[2]
Capitalized interest		0	0	[2]	0	0	[2]
Gains (losses) on fuel derivatives		0	0	[2]	0	0	[2]
Other, net		0	0	[2]	0	0	[2]
Total		(81,099)	(77,574)	[2]	(110,909)	(111,306)	[2]
Income Before Income Taxes		(81,099)	(77,574)	[2]	(110,909)	(111,306)	[2]
Income tax expense (benefit)		0	0	[2]	0	0	[2]
Net Income (Loss)		(81,099)	(77,574)	[2]	(110,909)	(111,306)	[2]
Comprehensive Income (Loss)		(91,043)	(80,257)	[2]	(113,662)	(108,446)	[2]
Parent Issuer / Guarantor | Reportable Legal Entities
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Total		0	0	[2]	0	0	[2]
Operating Expenses:
Wages and benefits		0	0	[2]	0	0	[2]
Aircraft fuel, including taxes and delivery		0	0	[2]	0	0	[2]
Maintenance materials and repairs		0	0	[2]	0	0	[2]
Aircraft and passenger servicing		0	0	[2]	0	0	[2]
Commissions and other selling		0	18	[2]	(5)	24	[2]
Aircraft rent		0	0	[2]	0	0	[2]
Other rentals and landing fees		0	0	[2]	0	0	[2]
Depreciation and amortization		0	0	[2]	0	0	[2]
Purchased services		(2)	177	[2]	88	283	[2]
Contract termination expense					0
Special items	[2]		0			0
Other		2,099	1,308	[2]	3,680	2,460	[2]
Total		2,097	1,503	[2]	3,763	2,767	[2]
Operating Income		(2,097)	(1,503)	[2]	(3,763)	(2,767)	[2]
Nonoperating Income (Expense):
Undistributed net income of subsidiaries		81,099	77,574	[2]	110,909	111,306	[2]
Interest expense and amortization of debt discounts and issuance costs		(3)	0	[2]	(3)	0	[2]
Interest income		51	70	[2]	116	140	[2]
Capitalized interest		0	0	[2]	0	0	[2]
Gains (losses) on fuel derivatives		0	0	[2]	0	0	[2]
Other, net		0	0	[2]	(4)	0	[2]
Total		81,147	77,644	[2]	111,018	111,446	[2]
Income Before Income Taxes		79,050	76,141	[2]	107,255	108,679	[2]
Income tax expense (benefit)		(430)	(756)	[2]	(767)	(1,860)	[2]
Net Income (Loss)		79,480	76,897	[2]	108,022	110,539	[2]
Comprehensive Income (Loss)		$ 89,424	79,577	[2]	$ 110,775	107,680	[2]
Subsidiary Issuer / Guarantor
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Number of pass-through trusts | pass_through_trust		2			2
Subsidiary Issuer / Guarantor | Reportable Legal Entities
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Total		$ 713,127	668,387	[2]	$ 1,376,539	1,272,954	[2]
Operating Expenses:
Wages and benefits		171,555	154,660	[2]	340,264	305,713	[2]
Aircraft fuel, including taxes and delivery		153,026	102,774	[2]	286,472	206,312	[2]
Maintenance materials and repairs		59,468	52,137	[2]	116,962	109,430	[2]
Aircraft and passenger servicing		38,626	35,636	[2]	75,144	69,926	[2]
Commissions and other selling		31,863	32,151	[2]	63,821	61,814	[2]
Aircraft rent		29,865	34,183	[2]	61,765	67,318	[2]
Other rentals and landing fees		30,952	27,438	[2]	61,767	55,774	[2]
Depreciation and amortization		31,902	26,919	[2]	63,177	53,436	[2]
Purchased services		31,249	27,646	[2]	62,117	54,000	[2]
Contract termination expense					35,322
Special items	[2]		4,771			23,450
Other		37,435	31,001	[2]	74,558	61,454	[2]
Total		615,941	529,316	[2]	1,241,369	1,068,627	[2]
Operating Income		97,186	139,071	[2]	135,170	204,327	[2]
Nonoperating Income (Expense):
Undistributed net income of subsidiaries		0	0	[2]	0	0	[2]
Interest expense and amortization of debt discounts and issuance costs		(7,579)	(7,711)	[2]	(16,134)	(15,714)	[2]
Interest income		1,880	1,397	[2]	3,289	2,479	[2]
Capitalized interest		2,355	2,082	[2]	4,593	3,842	[2]
Gains (losses) on fuel derivatives		18,952	(4,712)	[2]	23,569	(13,510)	[2]
Other, net		(2,752)	(4,317)	[2]	(1,697)	(6,240)	[2]
Total		12,856	(13,261)	[2]	13,620	(29,143)	[2]
Income Before Income Taxes		110,042	125,810	[2]	148,790	175,184	[2]
Income tax expense (benefit)		27,201	47,511	[2]	36,101	61,187	[2]
Net Income (Loss)		82,841	78,299	[2]	112,689	113,997	[2]
Comprehensive Income (Loss)		92,785	80,985	[2]	115,442	111,136	[2]
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)
Total		2,393	1,837	[2]	4,520	3,583	[2]
Operating Expenses:
Wages and benefits		0	0	[2]	0	0	[2]
Aircraft fuel, including taxes and delivery		0	0	[2]	0	0	[2]
Maintenance materials and repairs		1,502	429	[2]	2,149	2,540	[2]
Aircraft and passenger servicing		0	0	[2]	0	0	[2]
Commissions and other selling		25	19	[2]	45	38	[2]
Aircraft rent		0	370	[2]	0	370	[2]
Other rentals and landing fees		232	0	[2]	232	0	[2]
Depreciation and amortization		1,017	953	[2]	1,987	1,904	[2]
Purchased services		242	247	[2]	420	439	[2]
Contract termination expense					0
Special items	[2]		0			0
Other		1,536	547	[2]	1,901	982	[2]
Total		4,554	2,565	[2]	6,734	6,273	[2]
Operating Income		(2,161)	(728)	[2]	(2,214)	(2,690)	[2]
Nonoperating Income (Expense):
Undistributed net income of subsidiaries		0	0	[2]	0	0	[2]
Interest expense and amortization of debt discounts and issuance costs		(45)	0	[2]	(45)	0	[2]
Interest income		0	0	[2]	0	0	[2]
Capitalized interest		0	0	[2]	0	0	[2]
Gains (losses) on fuel derivatives		0	0	[2]	0	0	[2]
Other, net		0	0	[2]	5	0	[2]
Total		(45)	0	[2]	(40)	0	[2]
Income Before Income Taxes		(2,206)	(728)	[2]	(2,254)	(2,690)	[2]
Income tax expense (benefit)		(464)	0	[2]	(474)	0	[2]
Net Income (Loss)		(1,742)	(728)	[2]	(1,780)	(2,690)	[2]
Comprehensive Income (Loss)		$ (1,742)	$ (728)	[2]	$ (1,780)	$ (2,690)	[2]
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Condensed Consolidating Finan61

Condensed Consolidating Financial Information - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	[2]
Current assets:
Cash and cash equivalents	$ 333,791	$ 190,953	[1]
Restricted cash	1,000	1,000	[1]
Short-term investments	259,313	269,297	[1]
Accounts receivable, net	111,493	140,279	[1]
Spare parts and supplies, net	36,387	35,361	[1]
Prepaid expenses and other	99,315	79,186	[1]
Total	841,299	716,076	[1]
Property and equipment at cost	2,698,597	2,400,811
Less accumulated depreciation and amortization	(611,642)	(558,548)
Property and equipment, net	2,086,955	1,842,263	[1]
Long-term prepayments and other	183,276	193,632	[1]
Deferred tax assets, net	0	0
Goodwill and other intangible assets, net	121,331	121,850
Intercompany receivable	0	0
Investment in consolidated subsidiaries	0	0
Total Assets	3,232,861	2,873,821	[1]
Current liabilities:
Accounts payable	153,262	140,805	[1]
Air traffic liability	712,069	589,093
Other accrued liabilities	144,003	147,593	[1]
Current maturities of long-term debt, less discount, and capital lease obligations	113,526	59,470	[1]
Total	1,122,860	936,961	[1]
Long-term debt and capital lease obligations	578,453	511,201	[1]
Intercompany payable	0	0
Other liabilities and deferred credits:
Accumulated pension and other post-retirement benefit obligations	218,426	220,788	[1]
Other liabilities and deferred credits	257,911	225,605	[1]
Deferred tax liabilities, net	135,164	134,141	[1]
Total	611,501	580,534	[1]
Shareholders’ equity	920,047	845,125	[1]
Total Liabilities and Shareholders’ Equity	3,232,861	2,873,821	[1]
Eliminations
Current assets:
Cash and cash equivalents	0	0
Restricted cash	0	0
Short-term investments	0	0
Accounts receivable, net	(248)	(209)
Spare parts and supplies, net	0	0
Prepaid expenses and other	0	0
Total	(248)	(209)
Property and equipment at cost	0	0
Less accumulated depreciation and amortization	0	0
Property and equipment, net	0	0
Long-term prepayments and other	0	0
Deferred tax assets, net	(33,086)	(31,845)
Goodwill and other intangible assets, net	0	0
Intercompany receivable	(405,270)	(392,791)
Investment in consolidated subsidiaries	(1,261,977)	(1,137,941)
Total Assets	(1,700,581)	(1,562,786)
Current liabilities:
Accounts payable	(248)	(209)
Air traffic liability	0	0
Other accrued liabilities	0	0
Current maturities of long-term debt, less discount, and capital lease obligations	0	0
Total	(248)	(209)
Long-term debt and capital lease obligations	0	0
Intercompany payable	(405,270)	(392,791)
Other liabilities and deferred credits:
Accumulated pension and other post-retirement benefit obligations	0	0
Other liabilities and deferred credits	0	0
Deferred tax liabilities, net	(33,086)	(31,845)
Total	(33,086)	(31,845)
Shareholders’ equity	(1,261,977)	(1,137,941)
Total Liabilities and Shareholders’ Equity	(1,700,581)	(1,562,786)
Parent Issuer / Guarantor | Reportable Legal Entities
Current assets:
Cash and cash equivalents	19,918	57,405
Restricted cash	0	0
Short-term investments	0	0
Accounts receivable, net	25	25
Spare parts and supplies, net	0	0
Prepaid expenses and other	181	171
Total	20,124	57,601
Property and equipment at cost	0	0
Less accumulated depreciation and amortization	0	0
Property and equipment, net	0	0
Long-term prepayments and other	0	0
Deferred tax assets, net	33,086	31,845
Goodwill and other intangible assets, net	0	0
Intercompany receivable	0	0
Investment in consolidated subsidiaries	1,261,977	1,137,941
Total Assets	1,315,187	1,227,387
Current liabilities:
Accounts payable	1,178	622
Air traffic liability	0	0
Other accrued liabilities	0	32
Current maturities of long-term debt, less discount, and capital lease obligations	0	0
Total	1,178	654
Long-term debt and capital lease obligations	0	0
Intercompany payable	393,962	381,608
Other liabilities and deferred credits:
Accumulated pension and other post-retirement benefit obligations	0	0
Other liabilities and deferred credits	0	0
Deferred tax liabilities, net	0	0
Total	0	0
Shareholders’ equity	920,047	845,125
Total Liabilities and Shareholders’ Equity	1,315,187	1,227,387
Subsidiary Issuer / Guarantor | Reportable Legal Entities
Current assets:
Cash and cash equivalents	306,679	125,861
Restricted cash	1,000	1,000
Short-term investments	259,313	269,297
Accounts receivable, net	110,932	139,008
Spare parts and supplies, net	36,387	35,361
Prepaid expenses and other	99,056	78,933
Total	813,367	649,460
Property and equipment at cost	2,610,253	2,326,249
Less accumulated depreciation and amortization	(598,700)	(546,831)
Property and equipment, net	2,011,553	1,779,418
Long-term prepayments and other	183,013	193,449
Deferred tax assets, net	0	0
Goodwill and other intangible assets, net	120,407	120,695
Intercompany receivable	405,270	392,791
Investment in consolidated subsidiaries	0	0
Total Assets	3,533,610	3,135,813
Current liabilities:
Accounts payable	150,294	138,818
Air traffic liability	707,724	584,366
Other accrued liabilities	143,728	147,211
Current maturities of long-term debt, less discount, and capital lease obligations	113,496	59,470
Total	1,115,242	929,865
Long-term debt and capital lease obligations	573,831	511,201
Intercompany payable	0	0
Other liabilities and deferred credits:
Accumulated pension and other post-retirement benefit obligations	218,426	220,788
Other liabilities and deferred credits	256,798	224,500
Deferred tax liabilities, net	168,250	165,986
Total	643,474	611,274
Shareholders’ equity	1,201,063	1,083,473
Total Liabilities and Shareholders’ Equity	3,533,610	3,135,813
Non-Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash and cash equivalents	7,194	7,687
Restricted cash	0	0
Short-term investments	0	0
Accounts receivable, net	784	1,455
Spare parts and supplies, net	0	0
Prepaid expenses and other	78	82
Total	8,056	9,224
Property and equipment at cost	88,344	74,562
Less accumulated depreciation and amortization	(12,942)	(11,717)
Property and equipment, net	75,402	62,845
Long-term prepayments and other	263	183
Deferred tax assets, net	0	0
Goodwill and other intangible assets, net	924	1,155
Intercompany receivable	0	0
Investment in consolidated subsidiaries	0	0
Total Assets	84,645	73,407
Current liabilities:
Accounts payable	2,038	1,574
Air traffic liability	4,345	4,727
Other accrued liabilities	275	350
Current maturities of long-term debt, less discount, and capital lease obligations	30	0
Total	6,688	6,651
Long-term debt and capital lease obligations	4,622	0
Intercompany payable	11,308	11,183
Other liabilities and deferred credits:
Accumulated pension and other post-retirement benefit obligations	0	0
Other liabilities and deferred credits	1,113	1,105
Deferred tax liabilities, net	0	0
Total	1,113	1,105
Shareholders’ equity	60,914	54,468
Total Liabilities and Shareholders’ Equity	$ 84,645	$ 73,407
[1]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.
[2]	Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 2 to Consolidated Financial Statements contained in Part I, Item 1 of this report for additional information.

Condensed Consolidating Finan62

Condensed Consolidating Financial Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Condensed Consolidating Statements of Cash Flows
Net Cash Provided By (Used In) Operating Activities	$ 373,761,000	$ 335,440,000
Cash Flows From Investing Activities:
Net payments to affiliates	0	0
Additions to property and equipment, including pre-delivery deposits	(258,112,000)	(96,278,000)
Proceeds from disposition of property and equipment	987,000	33,511,000
Purchases of investments	(110,092,000)	(107,533,000)
Sales of investments	119,236,000	125,881,000
Net cash used in investing activities	(247,981,000)	(44,419,000)
Cash Flows From Financing Activities:
Long-term borrowings	86,500,000	0
Repayments of long-term debt and capital lease obligations	(30,047,000)	(30,484,000)
Debt issuance costs	(889,000)	0
Dividend payments	(12,238,000)	0
Net payments from affiliates	0	0
Repurchases of common stock	(22,745,000)	(4,299,000)
Other	(3,523,000)	(7,535,000)
Net cash provided by (used in) financing activities	17,058,000	(42,318,000)
Net increase in cash and cash equivalents	142,838,000	248,703,000
Cash, cash equivalents, and restricted cash - Beginning of Period	191,953,000	330,991,000
Cash, cash equivalents, and restricted cash - End of Period	334,791,000	579,694,000
Eliminations
Condensed Consolidating Statements of Cash Flows
Net Cash Provided By (Used In) Operating Activities	0	0
Cash Flows From Investing Activities:
Net payments to affiliates	17,421,000	7,960,000
Additions to property and equipment, including pre-delivery deposits	0	0
Proceeds from disposition of property and equipment	0	0
Purchases of investments	0	0
Sales of investments	0	0
Net cash used in investing activities	17,421,000	7,960,000
Cash Flows From Financing Activities:
Long-term borrowings	0
Repayments of long-term debt and capital lease obligations	0	0
Debt issuance costs	0
Dividend payments	0
Net payments from affiliates	(17,421,000)	(7,960,000)
Repurchases of common stock	0	0
Other	0	0
Net cash provided by (used in) financing activities	(17,421,000)	(7,960,000)
Net increase 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 Provided By (Used In) Operating Activities	(2,603,000)	(2,498,000)
Cash Flows From Investing Activities:
Net payments to affiliates	(8,700,000)	0
Additions to property and equipment, including pre-delivery deposits	0	0
Proceeds from disposition of property and equipment	0	0
Purchases of investments	0	0
Sales of investments	0	0
Net cash used in investing activities	(8,700,000)	0
Cash Flows From Financing Activities:
Long-term borrowings	0
Repayments of long-term debt and capital lease obligations	0	0
Debt issuance costs	0
Dividend payments	(12,238,000)
Net payments from affiliates	8,721,000	7,960,000
Repurchases of common stock	(22,745,000)	(4,299,000)
Other	78,000	86,000
Net cash provided by (used in) financing activities	(26,184,000)	3,747,000
Net increase in cash and cash equivalents	(37,487,000)	1,249,000
Cash, cash equivalents, and restricted cash - Beginning of Period	57,405,000	67,629,000
Cash, cash equivalents, and restricted cash - End of Period	19,918,000	68,878,000
Subsidiary Issuer / Guarantor | Reportable Legal Entities
Condensed Consolidating Statements of Cash Flows
Net Cash Provided By (Used In) Operating Activities	375,052,000	339,242,000
Cash Flows From Investing Activities:
Net payments to affiliates	(8,721,000)	(7,960,000)
Additions to property and equipment, including pre-delivery deposits	(247,607,000)	(94,250,000)
Proceeds from disposition of property and equipment	987,000	33,511,000
Purchases of investments	(110,092,000)	(107,533,000)
Sales of investments	119,236,000	125,881,000
Net cash used in investing activities	(246,197,000)	(50,351,000)
Cash Flows From Financing Activities:
Long-term borrowings	86,500,000
Repayments of long-term debt and capital lease obligations	(30,047,000)	(30,484,000)
Debt issuance costs	(889,000)
Dividend payments	0
Net payments from affiliates	0	0
Repurchases of common stock	0	0
Other	(3,601,000)	(7,621,000)
Net cash provided by (used in) financing activities	51,963,000	(38,105,000)
Net increase in cash and cash equivalents	180,818,000	250,786,000
Cash, cash equivalents, and restricted cash - Beginning of Period	126,861,000	254,985,000
Cash, cash equivalents, and restricted cash - End of Period	307,679,000	505,771,000
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Consolidating Statements of Cash Flows
Net Cash Provided By (Used In) Operating Activities	1,312,000	(1,304,000)
Cash Flows From Investing Activities:
Net payments to affiliates	0	0
Additions to property and equipment, including pre-delivery deposits	(10,505,000)	(2,028,000)
Proceeds from disposition of property and equipment	0	0
Purchases of investments	0	0
Sales of investments	0	0
Net cash used in investing activities	(10,505,000)	(2,028,000)
Cash Flows From Financing Activities:
Long-term borrowings	0
Repayments of long-term debt and capital lease obligations	0	0
Debt issuance costs	0
Dividend payments	0
Net payments from affiliates	8,700,000	0
Repurchases of common stock	0	0
Other	0	0
Net cash provided by (used in) financing activities	8,700,000	0
Net increase in cash and cash equivalents	(493,000)	(3,332,000)
Cash, cash equivalents, and restricted cash - Beginning of Period	7,687,000	8,377,000
Cash, cash equivalents, and restricted cash - End of Period	$ 7,194,000	$ 5,045,000