Air Canada flight AC 4923: Saint Louis - Chicago O'Hare

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 10:30 Saint Louis (STL) 1 11:58 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:28 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 4395)
Mon-Wed,Fri,Sun 11:05 Saint Louis (STL) 1 12:40 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:35 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 4405)
Daily 11:20 Saint Louis (STL) 1 12:55 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-01-06 through 2026-02-03
Codeshare flight, operated by United Airlines.(UA 4395)
Wed 11:20 Saint Louis (STL) 1 12:57 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Embraer EMB 175 (E7W) 1:37 Operates only on 2026-02-04
Codeshare flight, operated by United Airlines.(UA 3486)
Daily 11:20 Saint Louis (STL) 1 12:55 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-02-05 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 4395)
Daily 11:25 Saint Louis (STL) 1 12:58 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-12 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 4395)
Daily 11:25 Saint Louis (STL) 1 12:54 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 4395)
Daily 11:45 Saint Louis (STL) 1 13:12 Chicago O'Hare (ORD) 2
AC 4923 Non-stop Canadair CRJ 550 (CR5) 1:27 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 4395)


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Air Canada flight AC 4923:
Saint Louis - Chicago O'Hare
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4923
10:30
Saint Louis (STL) 1

11:58
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4395)
Duration: 1:28, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4923
11:05
Saint Louis (STL) 1

12:40
Chicago O'Hare (ORD) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 4405)
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4923
11:20
Saint Louis (STL) 1

12:55
Chicago O'Hare (ORD) 2
Effective 2026-01-06 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4395)
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4923
11:20
Saint Louis (STL) 1

12:57
Chicago O'Hare (ORD) 2
Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3486)
Duration: 1:37, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4923
11:20
Saint Louis (STL) 1

12:55
Chicago O'Hare (ORD) 2
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4395)
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4923
11:25
Saint Louis (STL) 1

12:58
Chicago O'Hare (ORD) 2
Effective 2026-02-12 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4395)
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4923
11:25
Saint Louis (STL) 1

12:54
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4395)
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4923
11:45
Saint Louis (STL) 1

13:12
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4395)
Duration: 1:27, non-stop
Canadair CRJ 550 (CR5)
  • AC 4923 is a domestic flight departing from the Saint Louis airport (STL) and arriving at Chicago O'Hare airport (ORD).
  • The flight distance is 258 miles, or 415 km.
  • The timezone of both the departure and the arrival airports is UTC-6 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 1:27 and 1:37.
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