How long is the UA3903 flight?

The timetable allows 2 h 42 min. Seattle to Denver is 1,645 km (1,022 mi).

What other flight numbers does UA3903 have?

Also listed as UAL3903 (United Airlines' ICAO code) and UA 3903.

UA3903 Flight Status United Airlines: Seattle to Denver (UAL3903)

Are you looking for the November 9th, 2026 UA 3903 Toronto to Houston flight? Go to our UA3903 Toronto to Houston Flight Status page >

UA 3903 Seattle to Denver Flight Status

Not scheduled today (November 9th, 2026). Latest flight: October 29th, 2026 ; recent history is in the table below.

UA 3903 Flight Status & Schedule United Airlines Seattle to Denver

Date	From	To	Departure	Arrival	Status	Details
Oct 29	SEA	DEN	09:13	12:29	Landed	Track >

United Airlines' Seattle–Denver flight covers 1,645 km (1,022 mi). The timetable allows 2 h 42 min; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight, on 29 October 2026, landed on time.

< All Seattle SEA Departures All Denver DEN Arrivals >

About UA 3903

Route: Seattle Tacoma International Airport SEA to Denver International Airport DEN
Distance: 1,645 km (1,022 mi)
Scheduled flight time: 2 h 42 min

UA 3903 FAQ

How long is the UA3903 flight?: The timetable allows 2 h 42 min. Seattle to Denver is 1,645 km (1,022 mi).
What other flight numbers does UA3903 have?: Also listed as UAL3903 (United Airlines' ICAO code) and UA 3903.

UA3903 and Seattle SEA to Denver DEN Flights

Other flights departing from Seattle SEA: QX2202, WN3786

Other flights arriving at Denver DEN: UA3906, OO5469, OO5028

All flights connecting Seattle SEA to Denver DEN.