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Fleet intelligence · United Air Lines Inc. · Boeing 737-900

United Air Lines Inc. Boeing 737-900

United Air Lines Inc. reports 12 airframes of this type in its 2025 US DOT Form 41 filing12 in service, 0 stored. Average age 24.8 yr. Range 24.3 yr to 25.1 yr.

Fleet as reported in the 2025 US DOT Form 41 filing · Registry & ages refreshed Jul 14, 2026

In the filing
1212 in service · 0 stored
Average age
24.8 yr
Age range
24.3–25.1Years, youngest to oldest

How old is the United Air Lines Inc. Boeing 737-900 fleet?

United Air Lines Inc. Boeing 737-900 — airframes by age (years)

Age is measured from each airframe's delivery date — the FAA airworthiness date where available, otherwise the manufacturer's. Bars share a fixed scale across every fleet page, so two carriers can be compared directly.

Oldest airframeN30401Boeing 737-90025.1 yr · Delivered May 25, 2001
Newest airframeN31412Boeing 737-90024.3 yr · Delivered Apr 14, 2002

Airframes

  • N31412In service
    Age
    24.3 yr
    Delivered
    Apr 14, 2002
  • N71411In service
    Age
    24.5 yr
    Delivered
    Jan 21, 2002
  • N75410In service
    Age
    24.6 yr
    Delivered
    Dec 4, 2001
  • N37409In service
    Age
    24.7 yr
    Delivered
    Nov 15, 2001
  • N37408In service
    Age
    24.8 yr
    Delivered
    Sep 28, 2001
  • N35407In service
    Age
    24.8 yr
    Delivered
    Sep 19, 2001
  • N73406In service
    Age
    24.9 yr
    Delivered
    Sep 9, 2001
  • N72405In service
    Age
    24.9 yr
    Delivered
    Aug 7, 2001
  • N32404In service
    Age
    25.0 yr
    Delivered
    Jul 17, 2001
  • N79402In service
    Age
    25.0 yr
    Delivered
    Jul 6, 2001
  • N38403In service
    Age
    25.0 yr
    Delivered
    Jul 3, 2001
  • N30401In service
    Age
    25.1 yr
    Delivered
    May 25, 2001

Other United Air Lines Inc. types

Inventory: US DOT Form 41 Schedule B-43 (2025). Deliveries: Airbus & Boeing official reports. Registry status: FAA. Last refreshed Jul 14, 2026.