v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS    
NET CASH PROVIDED BY OPERATING ACTIVITIES $ 436,339 $ 428,083
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of marketable securities (353,910) (751,545)
Sales of marketable securities 417,926 646,969
Acquisition of property and equipment:    
Aircraft and rotable spare parts (218,624) (227,832)
Buildings and ground equipment (22,057) (13,986)
Deposits paid on aircraft (12,302) (31,078)
Proceeds from the sale of property and equipment 298 3,823
Decrease in other assets, net 3,359 991
NET CASH USED IN INVESTING ACTIVITIES (185,310) (372,658)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from issuance of long-term debt 141,721 47,099
Principal payments on long-term debt (238,585) (224,437)
Payment of debt issuance cost (449) (192)
Net proceeds from issuance of common stock 1,313 1,293
Employee income tax paid on vested equity awards (45,637) (27,242)
Purchase of treasury stock and related excise tax (150,658) (30,978)
NET CASH USED IN FINANCING ACTIVITIES (292,295) (234,457)
Decrease in cash and cash equivalents (41,266) (179,032)
Cash and cash equivalents at beginning of period 122,673 227,362
CASH AND CASH EQUIVALENTS AT END OF PERIOD 81,407 48,330
Non-cash investing and financing activities:    
Change in accrued capital expenditures for the period 30,435 16,571
Cash paid during the period for:    
Interest, net of capitalized amounts 51,140 53,311
Income taxes, net of refunds $ 3,669 $ 9,090