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Other Current Liabilities
 12 Months Ended
Dec. 31, 2023
Other Liabilities Disclosure [Abstract]  
Other Current Liabilities Other Current Liabilities
Other current liabilities consist of the following (in millions):
December 31,
20232022
Passenger and other taxes and fees payable$125 $113 
Salaries, wages and benefits107 104 
Aircraft maintenance76 63 
Station obligations69 57 
Fuel liabilities35 34 
Leased aircraft return costs1 84 
Other current liabilities48 63 
Total other current liabilities$461 $518