Live tracking not available yet
UA3921 has a schedule in our database but isn't on the airport board right now. Live position data typically appears within a few hours of departure.
Flight Status
Scheduled
Route Info
DEN
Denver International Airport
Denver
Scheduled 11:30 PM
IAD
Washington Dulles International Airport
Dulles
Scheduled 4:48 AM
3h 18m flight time
Fri
Recent Flights
No flight history yet
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Schedule
Operates
Fri
Departure
11:30 PM
Arrival
4:48 AM
Duration
3h 18m
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Schedule valid
Mar 13 —
Mar 20, 2026