21 unchanged sentences
Total mainline 1,066 958 108 15.3
−Removed: Aircraft Type Total Owned Owned or Leased by Regional Carrier Regional Carrier Operator and Number of Aircraft Seats in Standard Configuration
+Added: Aircraft Type Total Owned Owned or Leased by Regional Carrier Regional Carrier Operator Number of Aircraft Seats in Standard Configuration
E175 241 117 124 SkyWest
E170 4 — 4 Republic 4 70
−Removed: CRJ900 6 — 6 Mesa:
CRJ700 10 — 10 SkyWest 10 70
3 unchanged sentences
Total regional 424 196 228
−Removed: In addition to the aircraft presented in the table above, United owned or leased the following regional aircraft as of December 31, 2024:
−Removed: • 6 CRJ550s, 5 E175s and 38 ERJ145XRs that are temporarily grounded;
−Removed: • 8 CRJ700s awaiting conversion to CRJ550s.
+Added: In addition to the aircraft presented in the table above, United owned the following regional aircraft as of December 31, 2025:
+Added: • 29 ERJ145XRs that are temporarily grounded;
+Added: • Two CRJ700s awaiting conversion to CRJ550s.
Firm Order and Option Aircraft.
6 unchanged sentences
737 MAX 10 167 3 44 120 — 21 146
−Removed: 737 MAX 10 167 — 3 164 — — 167
A321neo 119 18 1 100 16 3 100
9 unchanged sentences
See Note 12 to the financial statements included in Part II, Item 8 of this report for additional information.
−Removed: United leases gates, hangar sites, terminal buildings and other airport facilities in the municipalities it serves.
−Removed: United has major terminal facility leases at SFO, IAD, ORD, LAX, DEN, EWR, IAH and GUM with expiration dates ranging from 2025 through 2056.
+Added: United has major terminal facility leases at SFO, IAD, ORD, LAX, DEN, EWR, IAH and GUM.
+Added: United leases gates, hangar sites, terminal buildings and other airport facilities in the municipalities it serves with lease expiration dates ranging from 2026 through 2057.
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.
−Removed: 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.
+Added: United's leases for its principal executive office and operations center in downtown Chicago and administrative offices in downtown Houston expire from 2029 through 2033.
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.