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Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Summary of flight equipment commitments
As of March 31, 2024, our committed expenditures for aircraft and related flight equipment, including estimated amounts for contractual price escalations and pre-delivery deposits, is set forth in the table below (in millions):
Flight equipment commitments
YearTotal
Remainder of 2024
$820 
20251,165 
20261,144 
20271,011 
20281,529 
Thereafter1,198 
Total$6,867 
As of March 31, 2024, our firm aircraft orders included the following aircraft:
Flight equipment deliveries (1)
YearAirbus A220Airbus A321neoTotal
Remainder of 202415 4 19 
202520 5 25 
202620 4 24 
20275 9 14 
20287 16 23 
Thereafter4 14 18 
Total (2)
71 52 123 
(1) The aircraft orders stated above represents the current delivery schedule set forth in our Airbus order book as of March 31, 2024.
(2) In addition, we have options to purchase an additional 20 A220-300 aircraft.