Live tracking not available yet
UA1729 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
STL
St. Louis Lambert International Airport
St Louis
T1 Scheduled 2:35 PM
DEN
Denver International Airport
Denver
Scheduled 4:09 PM
2h 34m flight time
Daily
Recent Flights
Last 1 observedMar 16
Mon
DEN
PHX
Dep 19:15:00
(actual 02:21:00)
A21N
Boarding
Schedule
Operates
Daily
Departure
2:35 PM
Arrival
4:09 PM
Duration
2h 34m
Aircraft
Boeing 737 MAX 8
Terminal
T1
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Upcoming
Wed, Mar 18
Thu, Mar 19
Fri, Mar 20
Sat, Mar 21
Sun, Mar 22
Mon, Mar 23
Tue, Mar 24
Schedule valid
Apr 30 —
May 20, 2026