Air Canada flight AC 4925: Saint Louis - Chicago O'Hare

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Wed 07:40 Saint Louis (STL) 1 09:09 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-10 through 2026-03-16
Codeshare flight, operated by United Airlines.(UA 2138)
Tue,Wed 07:40 Saint Louis (STL) 1 09:09 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-18 through 2026-03-24
Codeshare flight, operated by United Airlines.(UA 2138)
Mon,Fri-Sun 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:29 Effective 2026-02-13 through 2026-02-23
Codeshare flight, operated by United Airlines.(UA 1612)
Mon,Tue 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:29 Effective 2026-02-24 through 2026-03-03
Codeshare flight, operated by United Airlines.(UA 1612)
Wed 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:29 Operates only on 2026-03-04
Codeshare flight, operated by United Airlines.(UA 1612)
Thu,Fri 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-05 through 2026-03-12
Codeshare flight, operated by United Airlines.(UA 2138)
Sun 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Boeing 737-700 (73G) 1:29 Operates only on 2026-03-08
Codeshare flight, operated by United Airlines.(UA 2138)
Thu,Fri 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-19 through 2026-03-27
Codeshare flight, operated by United Airlines.(UA 2138)
Sat 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Boeing 737-900 (739) 1:29 Operates only on 2026-03-28
Codeshare flight, operated by United Airlines.(UA 2138)
Mon,Wed,Sun 07:45 Saint Louis (STL) 1 09:11 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:26 Effective 2026-03-29 through 2026-04-01
Codeshare flight, operated by United Airlines.(UA 473)
Mon-Thu 07:45 Saint Louis (STL) 1 09:11 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:26 Effective 2026-04-06 through 2026-04-09
Codeshare flight, operated by United Airlines.(UA 473)
Tue-Sat 07:45 Saint Louis (STL) 1 09:11 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:26 Effective 2026-04-14 through 2026-04-18
Codeshare flight, operated by United Airlines.(UA 473)
Tue-Sun 07:45 Saint Louis (STL) 1 09:11 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:26 Effective 2026-04-22 through 2026-04-28
Codeshare flight, operated by United Airlines.(UA 473)
Daily 07:45 Saint Louis (STL) 1 09:07 Chicago O'Hare (ORD) 1
AC 4925 Non-stop Airbus A319 (319) 1:22 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 473)
Daily 08:00 Saint Louis (STL) 1 09:22 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:22 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 4183)
Daily 08:05 Saint Louis (STL) 1 09:40 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:35 Valid until 2026-02-03
Codeshare flight, operated by United Airlines.(UA 4183)
Daily 08:05 Saint Louis (STL) 1 09:40 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-02-05 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 4183)
Tue-Thu 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-17 through 2026-02-19
Codeshare flight, operated by United Airlines.(UA 4608)
Wed-Sun 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-25 through 2026-03-01
Codeshare flight, operated by United Airlines.(UA 4608)
Mon,Fri,Sat 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-07 through 2026-03-14
Codeshare flight, operated by United Airlines.(UA 4608)
Tue,Sat,Sun 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-15 through 2026-03-22
Codeshare flight, operated by United Airlines.(UA 4608)
Mon,Wed 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-23 through 2026-03-25
Codeshare flight, operated by United Airlines.(UA 4608)
Wed 08:20 Saint Louis (STL) 1 09:55 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:35 Operates only on 2026-02-04
Codeshare flight, operated by United Airlines.(UA 4183)
Tue,Thu-Sun 08:26 Saint Louis (STL) 1 09:55 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-31 through 2026-04-05
Codeshare flight, operated by United Airlines.(UA 4608)
Mon,Fri-Sun 08:26 Saint Louis (STL) 1 09:55 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-10 through 2026-04-13
Codeshare flight, operated by United Airlines.(UA 4608)
Mon,Tue,Sun 08:26 Saint Louis (STL) 1 09:55 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-19 through 2026-04-21
Codeshare flight, operated by United Airlines.(UA 4608)
Mon,Wed 08:26 Saint Louis (STL) 1 09:55 Chicago O'Hare (ORD) 2
AC 4925 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-27 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 4608)


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Air Canada flight AC 4925:
Saint Louis - Chicago O'Hare
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4925
07:40
Saint Louis (STL) 1

09:09
Chicago O'Hare (ORD) 1
Effective 2026-03-10 through 2026-03-16
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2138)
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4925
07:40
Saint Louis (STL) 1

09:09
Chicago O'Hare (ORD) 1
Effective 2026-03-18 through 2026-03-24
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2138)
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-02-13 through 2026-02-23
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1612)
Duration: 1:29, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-02-24 through 2026-03-03
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1612)
Duration: 1:29, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Operates only on 2026-03-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1612)
Duration: 1:29, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-12
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2138)
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Operates only on 2026-03-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 2138)
Duration: 1:29, non-stop
Boeing 737-700 (73G)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-03-19 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2138)
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4925
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Operates only on 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 2138)
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4925
07:45
Saint Louis (STL) 1

09:11
Chicago O'Hare (ORD) 1
Effective 2026-03-29 through 2026-04-01
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 473)
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:45
Saint Louis (STL) 1

09:11
Chicago O'Hare (ORD) 1
Effective 2026-04-06 through 2026-04-09
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 473)
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:45
Saint Louis (STL) 1

09:11
Chicago O'Hare (ORD) 1
Effective 2026-04-14 through 2026-04-18
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 473)
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:45
Saint Louis (STL) 1

09:11
Chicago O'Hare (ORD) 1
Effective 2026-04-22 through 2026-04-28
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 473)
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
07:45
Saint Louis (STL) 1

09:07
Chicago O'Hare (ORD) 1
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 473)
Duration: 1:22, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4925
08:00
Saint Louis (STL) 1

09:22
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4183)
Duration: 1:22, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:05
Saint Louis (STL) 1

09:40
Chicago O'Hare (ORD) 2
Valid until 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4183)
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:05
Saint Louis (STL) 1

09:40
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 4183)
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-02-17 through 2026-02-19
Mon
-
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-02-25 through 2026-03-01
Mon
-
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-03-07 through 2026-03-14
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-03-15 through 2026-03-22
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-03-23 through 2026-03-25
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:20
Saint Louis (STL) 1

09:55
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 4183)
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:26
Saint Louis (STL) 1

09:55
Chicago O'Hare (ORD) 2
Effective 2026-03-31 through 2026-04-05
Mon
-
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:26
Saint Louis (STL) 1

09:55
Chicago O'Hare (ORD) 2
Effective 2026-04-10 through 2026-04-13
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:26
Saint Louis (STL) 1

09:55
Chicago O'Hare (ORD) 2
Effective 2026-04-19 through 2026-04-21
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Air Canada AC4925
08:26
Saint Louis (STL) 1

09:55
Chicago O'Hare (ORD) 2
Effective 2026-04-27 through 2026-04-29
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4608)
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
  • AC 4925 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 1:22 and 1:35.
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