UA731

For travellers

Departure · Denver (DEN)

Gate A17

Scheduled 03 Oct 17:31 · Departed 03 Oct 17:49 · +18 min

Board status: Off block

Airborne since 03 Oct 17:49 (ADS-B)

Board data from den, updated 5 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

Denver International Airport (DEN) — Denver, United States

Scheduled departure

2026-10-03 23:31 UTC

Departed

2026-10-03 23:49 UTC

Arrival

Buffalo Niagara International Airport (BUF) — Buffalo, United States

Distance flown

2214 km

Straight-line distance

2182 km

Approach distance

69 km

Aircraft

Registration

N35204

Type

Boeing 737-800

Seats

166 total (102 Economy, 48 Economy Plus, 16 First)

CO2 (EMEP est., total)

51.5 t (425 kg/pax Business, 297 kg/pax Economy)

Altitude & speed

Max altitude

37,000 ft

Max ground speed

547 kt

Tracked

2h 42m · 2,209 km

Altitude (ft, max 37,000)

Ground speed (kt, max 547)

Altitude (ft, max 37,000)

Ground speed (kt, max 547)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-03 23:49 UTC	UAL731	DEN → BUF Denver → Buffalo	N35204	Boeing 737-800	Completed	2214 km
2026-10-02 23:32 UTC	UAL731	DEN → BUF Denver → Buffalo	N36272	Boeing 737-800	Completed	2240 km
2026-10-02 00:06 UTC	UAL731	DEN → BUF Denver → Buffalo	N33286	Boeing 737-800	Completed	2259 km
2026-09-30 23:54 UTC	UAL731	DEN → BUF Denver → Buffalo	N14235	Boeing 737-800	Completed	2268 km
2026-09-29 21:28 UTC	UAL2227	DEN → DEN Denver → Denver	N27366	Boeing 737 MAX 8	Completed	301 km