Live tracking not available yet
UA4423 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
ORD
Chicago O'Hare International Airport
Chicago
T2 Scheduled 7:00 AM
STL
St. Louis Lambert International Airport
St Louis
T1 Scheduled 8:23 AM
1h 23m flight time
Wed
Recent Flights
Last 13 observedMar 18
Wed
STL
ORD
Dep 06:25:00
(actual 07:11:00)
CR7
Boarding
Mar 17
Tue
STL
ORD
Dep 06:25:00
(actual 06:34:00)
CR5
Boarding
Mar 16
Mon
STL
ORD
Dep 06:25:00
(actual 08:08:00)
CR5
Boarding
Mar 15
Sun
STL
ORD
Dep 06:25:00
(actual 07:17:00)
CR5
Boarding
Mar 14
Sat
STL
ORD
Dep 06:25:00
(actual 06:38:00)
CR5
Boarding
Mar 13
Fri
STL
ORD
Dep 06:32:00
(actual 07:23:00)
CR7
Boarding
Mar 12
Thu
STL
ORD
Dep 06:32:00
(actual 06:42:00)
CR7
Boarding
Mar 11
Wed
STL
ORD
Dep 06:32:00
(actual 07:17:00)
CR7
Boarding
Mar 10
Tue
STL
ORD
Dep 06:32:00
(actual 10:09:00)
CR7
Boarding
Mar 09
Mon
STL
ORD
Dep 06:32:00
(actual 06:51:00)
CR7
Boarding
Mar 08
Sun
STL
ORD
Dep 06:32:00
(actual 06:51:00)
CR7
Boarding
Mar 07
Sat
STL
ORD
Dep 08:09:00
(actual 08:29:00)
CR7
Boarding
Mar 06
Fri
STL
ORD
Dep 06:25:00
(actual 07:40:00)
CR7
Boarding
Schedule
Operates
Wed
Departure
7:00 AM
Arrival
8:23 AM
Duration
1h 23m
Aircraft
Bombardier CRJ-550
Terminal
T2
T1
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Upcoming
Wed, Mar 25
Schedule valid
Apr 01 —
Apr 01, 2026