Live tracking not available yet
UA3877 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
MIA
Miami International Airport
Miami
Gate AAR Scheduled 1:40 AM
Actual 1:57 AM
ORD
Chicago O'Hare International Airport
Chicago
Gate B11 Scheduled 4:01 AM
Actual 3:55 AM
Baggage claim 11
3h 21m flight time
Fri
Recent Flights
Last 1 observedMar 13
Fri
MIA
ORD
Dep 01:40:00
(actual 01:57:00)
Boarding
Schedule
Operates
Fri
Departure
1:40 AM
Arrival
4:01 AM
Duration
3h 21m
Gate
AAR
B11
Actual
01:57
03:55
Baggage
Carousel 11
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Schedule valid
Mar 13 —
Mar 20, 2026