N2251U
Built 2020 · registered US
Free alerts when N2251U's registration or status changes, or the 777-300ER market moves.
This aircraft
Type photo — not this specific aircraftPhoto: John Taggart from Sunbury on Thames, Middlesex · CC BY-SA 2.0777-300ER for sale now
Free — save the 777-300ER to your watchlist and track it in one place.
View all 10 listings →
Performance specs
- Range
- 5,650 nm
- Cruise speed
- 488 kt
- Max speed
- 510 kt
- Service ceiling
- 43,000 ft
- Takeoff distance
- 3454 m
- Landing distance
- 1707 m
- MTOW
- 351,000 kg
- Empty weight
- —
- Fuel capacity
- 202,270 L
- Length
- 73.9 m
- Wingspan
- 64.8 m
- Height
- 18.6 m
- Seats
- 368
- Max passengers
- 550
Flight activity
(253 tracking legs recorded)- Last 30 days
- 58
- Last 90 days
- 159
- Last seen
- 12 Nov 2026
- Tracked since
- 26 May 2026
Frequent routes: KSFO → KSFO (14) · KEWR → KEWR (3) · KEWR → KSFO (3)
- Tracked flight10 Nov 2026 · 10h 27m
- Tracked flight8 Nov 2026 · 13h 43m
- Tracked flight8 Nov 2026 · 11h 37m
- Tracked flight7 Nov 2026 · 14h 13m
- Tracked flight7 Nov 2026 · 0h 07m
- Tracked flight6 Nov 2026 · 12h 44m
- Tracked flight5 Nov 2026 · 14h 16m
- Tracked flight5 Nov 2026 · 8h 58m
- Tracked flight4 Nov 2026 · 10h 27m
- … → KSFO4 Nov 2026 · 3h 11m
Showing the 10 most recent distinct flights. The total counts every raw ADS-B tracking leg, including repeat observations and sub-5-minute artifacts.
From ADS-B observations collected since May 2026. Coverage depends on ground-receiver density; gaps do not mean the aircraft did not fly.
Common. More common than 96% of the aircraft models we track.
Other 777-300ER airframes by tail number — same model as N2251U.
- N666CA2021
- N2352U2020
- N2250U2019
- N2749U2019
- N2747U2018
- N2748U2018
- N2846U2018
- N2645U2018
- N2534U2017
- N2136U2017
- N2639U2017
- N2737U2017
- N2341U2017
- N2140U2017
- N2142U2017
- N2243U2017
If you fly the 777-300ER, you may also be researching these.
Registration history
(1)- N2251UUSACTIVEUNITED AIRLINES INC2020 – present
Owner names are published by the issuing civil registry (FAA / CCARCS / CASA / ANAC / NZ CAA). Owner addresses present in the source are not republished here. Registered owner? Request removal
Operator history
(1)- United AirlinesOperator2026 – present
What aircraft model is N2251U?
N2251U is a Boeing 777-300ER, built in 2020. Sprinkle's record for N2251U covers its lineage, ownership history and specifications.
Is N2251U currently active?
Registry records list N2251U's status as Active, registered in United States — a Boeing 777-300ER.
What is the manufacturer serial number (MSN) of N2251U?
N2251U carries manufacturer serial number (MSN) 66591, the serial assigned to this Boeing 777-300ER airframe when it was built.
What is the ICAO24 / Mode S code for N2251U?
N2251U's ICAO24 (Mode S) transponder code is A1F622 — the hex address the Mode S transponder on this Boeing 777-300ER broadcasts.