Item 2. PROPERTIES.

Fleet. As of December 31, 2022, United's mainline and regional fleets consisted of the following:

In addition to the aircraft presented in the table above, United is leasing one Boeing 767-200 that is being subleased to a third party as of December 31, 2022.

In addition to the aircraft presented in the table above, United owned or leased the following regional aircraft as of December 31, 2022:

• 23 CRJ550s,18 Embraer E175LLs and 38 Embraer ERJ 145s that were temporarily grounded; and

• 8 CRJ700s awaiting conversion to CRJ550s.

Firm Order and Option Aircraft. As of December 31, 2022, United had firm commitments to purchase aircraft from Boeing and Airbus presented in the table below:

The aircraft listed in the table above are scheduled for delivery through 2033. The amount and timing of the Company's future capital commitments could change to the extent that: (i) the Company and the aircraft manufacturers, with whom the Company has existing orders for new aircraft, agree to modify the contracts governing those orders; (ii) rights are exercised pursuant to the relevant agreements to modify the timing of deliveries; or (iii) the aircraft manufacturers are unable to deliver in accordance with the terms of those orders. Airbus notified United that eight Airbus A321neo aircraft scheduled for delivery in 2023, as shown in the table above, are now expected to deliver in 2024, and Boeing notified United that 37 Boeing 737 MAX aircraft scheduled for delivery in 2023, as shown in the table above, are now expected to deliver in 2024. Also, United estimates that an additional six Boeing 737 MAX aircraft scheduled for delivery in 2023, as shown in the table above, will deliver in 2024.

See Note 12 to the financial statements included in Part II, Item 8 of this report for additional information.

Facilities. United leases gates, hangar sites, terminal buildings and other airport facilities in the municipalities it serves. United has major terminal facility leases at SFO, IAD, ORD, LAX, DEN, EWR, IAH and GUM with expiration dates ranging from 2023 through 2053. Substantially all of these facilities are leased on a net-rental basis, resulting in the Company having financial responsibility for maintenance, insurance and other facility-related expenses and services.

United also maintains administrative, catering, cargo, training, maintenance and other facilities to support its operations in the cities it serves. In addition, United has multiple leases, which expire from 2029 through 2033, for its principal executive office and operations center in downtown Chicago and administrative offices in downtown Houston.

In 2022, United expanded its club footprint with new United Clubs in EWR, ORD and Phoenix Sky Harbor International Airport, as well as a new Polaris Club at IAD and announced a planned club expansion at DEN. United also added new operational support facilities with a new Inflight Training Center at IAH and new widebody hangar in LAX. Additionally, in January 2023, United opened new gates in DEN and ORD as well as EWR's New Terminal A.