Live tracking not available yet
UA521 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
ATL
Hartsfield Jackson Atlanta International Airport
Atlanta
TN Gate T20 Scheduled 3:57 PM
Actual 3:57 PM
IAH
George Bush Intercontinental Airport
Houston
TC Gate C45 Scheduled 5:25 PM
Actual 5:25 PM
Baggage claim C7
2h 28m flight time
Daily
Recent Flights
No flight history yet
History builds as this flight gets tracked
Schedule
Operates
Daily
Departure
3:57 PM
Arrival
5:25 PM
Duration
2h 28m
Aircraft
Airbus A320
Terminal
TN
TC
Gate
T20
C45
Actual
15:57
17:25
Baggage
Carousel C7
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Upcoming
Fri, Mar 20
Sat, Mar 21
Sun, Mar 22
Mon, Mar 23
Tue, Mar 24
Wed, Mar 25
Thu, Mar 26
Schedule valid
Mar 17 —
May 20, 2026