Live tracking not available yet
UA3891 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
EWR
Newark Liberty International Airport
Newark
Scheduled 12:01 AM
OPO
Francisco de Sá Carneiro Airport
Porto
Scheduled 10:41 AM
6h 40m flight time
Thu
Recent Flights
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Schedule
Operates
Thu
Departure
12:01 AM
Arrival
10:41 AM
Duration
6h 40m
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Schedule valid
Mar 12 —
Mar 19, 2026