Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Operating activities:
Net loss		$ (247,109)	$ (400,184)
Adjustments to reconcile net income (loss) to net cash provided by operations:
Losses reclassified from other comprehensive income		102	116
Share-based compensation		5,723	6,740
Allowance for doubtful accounts (recoveries)		(108)	170
Amortization of debt issuance costs		6,695	6,412
Depreciation and amortization		152,660	148,015
Accretion of 8.00% senior secured notes		521	753
Amortization of debt discount		6,346	0
Deferred income tax expense (benefit)		(65,019)	(12,353)
Loss on disposal of assets		22,188	1,306
Loss on extinguishment of debt		0	331,630
Changes in operating assets and liabilities:
Accounts receivable, net		(21,213)	(98,484)
Aircraft maintenance deposits, net		8,869	5,616
Long-term deposits and other assets		(30,717)	(5,770)
Prepaid income taxes		0	(52)
Deferred heavy maintenance, net		(58,226)	(21,657)
Income tax receivable		0	109,746
Accounts payable		22,798	24,024
Air traffic liability		179,388	206,170
Deferred salaries, wages and benefits, net		0	86,360
Other liabilities		103,591	95,193
Other		278	365
Net cash provided by operating activities		86,767	484,116
Investing activities:
Purchase of available-for-sale investment securities		(38,970)	(55,936)
Proceeds from the maturity and sale of available-for-sale investment securities		38,500	55,500
Pre-delivery deposits on flight equipment, net of refunds		(7,367)	(81,208)
Capitalized interest		(8,948)	(9,055)
Assets under construction for others		(2)	(1,170)
Purchase of property and equipment		(106,271)	(87,154)
Net cash used in investing activities		(123,058)	(179,023)
Financing activities:
Proceeds from issuance of long-term debt		0	562,996
Proceeds from issuance of warrants		0	375,662
Payments on debt obligations		(96,755)	(857,552)
Payments for the early extinguishment of debt		0	(317,905)
Payments on finance lease obligations		(421)	(397)
Reimbursement for assets under construction for others		2	959
Repurchase of common stock		(1,777)	(1,324)
Debt issuance costs		(1,200)	(2,746)
Net cash used by financing activities		(100,151)	(240,307)
Net increase (decrease) in cash, cash equivalents, and restricted cash		(136,442)	64,786
Cash, cash equivalents, and restricted cash at beginning of period	[1]	1,428,907	1,861,124
Cash, cash equivalents, and restricted cash at end of period	[1]	1,292,465	1,925,910
Cash payments for:
Interest, net of capitalized interest		54,481	79,689
Income taxes paid (received), net		882	(108,648)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases		137,408	132,323
Financing cash flows for finance leases		34	48
Non-cash transactions:
Capital expenditures funded by finance lease borrowings		0	538
Capital expenditures funded by operating lease borrowings		$ 319,554	$ 268,169

[1] (1) The sum of cash and cash equivalents and restricted cash on the Company's condensed consolidated balance sheets equals cash, cash equivalents, and restricted cash in our statement of cash flows.