Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Firm Commitments and Options to Purchase Aircraft and Summary of Commitments

As of June 30, 2021, United had firm commitments and options to purchase aircraft from Boeing and Airbus as presented in the table below:

		Scheduled Aircraft Deliveries
Aircraft Type	Number of Firm  Commitments (a)	Last Six Months of 2021	2022	2023	After 2023
Airbus A321XLR	50	—	—	—	50
Airbus A321neo	70	—	—	16	54
Airbus A350	45	—	—	—	45
Boeing 737 MAX	380	13	40	122	205
Boeing 787	8	8	—	—	—
(a) United also has options and purchase rights for additional aircraft.

Summary of Commitments

The table below summarizes United's commitments as of June 30, 2021, which include aircraft and related spare engines, aircraft improvements and all non-aircraft capital commitments (in billions):

Last six months of 2021	$	3.1
2022	3.4
2023	7.4
2024	4.7
2025	4.3
After 2025	12.4
	$	35.3

Based on these assumptions as of June 30, 2021, our estimated future payments through the end of the terms of our CPAs are presented in the table below (in billions):

Last six months of 2021	$	1.1
2022	2.1
2023	1.9
2024	1.8
2025	1.5
After 2025	3.7
	$	12.1