Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 594,499	$ 642,747	$ 1,174,434	$ 1,252,023
Passenger Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	594,499	642,747
Resort Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	16,811	0	40,698	0
Scheduled service
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax			562,594	631,065
Scheduled service \| Passenger Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	272,715	319,338
Ancillary air-related charges
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax			582,183	593,637
Ancillary air-related charges \| Passenger Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	307,390	309,735
Loyalty redemptions
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax			29,657	27,321
Loyalty redemptions \| Passenger Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	14,394	13,674
Rooms \| Resort Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6,653	0	16,610	0
Food and beverage \| Resort Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7,643	0	18,415	0
Total resort revenue \| Resort Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,515	$ 0	$ 5,673	$ 0