Air Canada flight AC 3578: Chicago O'Hare - Saint Louis

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 12:55 Chicago O'Hare (ORD) 1 14:19 Saint Louis (STL) 1
AC 3578 Non-stop Airbus A319 (319) 1:24 Effective 2025-09-25 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 1160)
Daily 12:55 Chicago O'Hare (ORD) 1 14:18 Saint Louis (STL) 1
AC 3578 Non-stop Airbus A319 (319) 1:23 Effective from 2025-10-26
Codeshare flight, operated by United Airlines.(UA 1872)
Daily 13:05 Chicago O'Hare (ORD) 2 14:33 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:28 Effective 2025-08-19 through 2025-09-24
Codeshare flight, operated by United Airlines.(UA 3654)
Mon,Tue,Thu,Fri,Sun 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-06-27 through 2025-07-03
Codeshare flight, operated by United Airlines.(UA 3654)
Tue,Fri,Sun 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-07-06 through 2025-07-13
Codeshare flight, operated by United Airlines.(UA 3654)
Mon,Fri 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-07-14 through 2025-07-21
Codeshare flight, operated by United Airlines.(UA 3654)
Wed 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Canadair CRJ 550 (CR5) 1:26 Operates only on 2025-07-16
Codeshare flight, operated by United Airlines.(UA 5524)
Mon,Thu 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-07-24 through 2025-07-28
Codeshare flight, operated by United Airlines.(UA 3654)
Sat 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Canadair CRJ 550 (CR5) 1:26 Operates only on 2025-07-26
Codeshare flight, operated by United Airlines.(UA 5524)
Tue,Fri,Sun 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-08-01 through 2025-08-08
Codeshare flight, operated by United Airlines.(UA 3654)
Mon 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-08-11 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 3654)
Wed,Sat 13:11 Chicago O'Hare (ORD) 2 14:37 Saint Louis (STL) 1
AC 3578 Non-stop Canadair CRJ 550 (CR5) 1:26 Effective 2025-08-13 through 2025-08-16
Codeshare flight, operated by United Airlines.(UA 5425)
Mon-Fri 13:20 Chicago O'Hare (ORD) 1 14:47 Saint Louis (STL) 1
AC 3578 Non-stop Airbus A319 (319) 1:27 Valid until 2025-05-21
Codeshare flight, operated by United Airlines.(UA 455)
Sat,Sun 13:20 Chicago O'Hare (ORD) 2 14:50 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2025-05-03 through 2025-05-17
Codeshare flight, operated by United Airlines.(UA 3662)
Sun 13:20 Chicago O'Hare (ORD) 2 14:50 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:30 Operates only on 2025-05-18
Codeshare flight, operated by United Airlines.(UA 3662)
Thu 13:27 Chicago O'Hare (ORD) 2 14:53 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Operates only on 2025-05-22
Codeshare flight, operated by United Airlines.(UA 5239)
Fri 13:27 Chicago O'Hare (ORD) 2 14:53 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Operates only on 2025-05-30
Codeshare flight, operated by United Airlines.(UA 3654)
Mon,Wed 13:27 Chicago O'Hare (ORD) 2 14:53 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-06-16 through 2025-06-18
Codeshare flight, operated by United Airlines.(UA 3654)
Tue 13:27 Chicago O'Hare (ORD) 2 14:53 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Operates only on 2025-06-24
Codeshare flight, operated by United Airlines.(UA 3654)
Sat 13:30 Chicago O'Hare (ORD) 2 14:56 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Operates only on 2025-05-24
Codeshare flight, operated by United Airlines.(UA 5557)
Sun 13:30 Chicago O'Hare (ORD) 2 14:56 Saint Louis (STL) 1
AC 3578 Non-stop Embraer EMB 175 (E7W) 1:26 Operates only on 2025-06-08
Codeshare flight, operated by United Airlines.(UA 5557)
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Air Canada flight AC 3578:
Chicago O'Hare - Saint Louis
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3578
12:55
Chicago O'Hare (ORD) 1

14:19
Saint Louis (STL) 1
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1160)
Duration: 1:24, non-stop
Airbus A319 (319)
Air Canada AC3578
12:55
Chicago O'Hare (ORD) 1

14:18
Saint Louis (STL) 1
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1872)
Duration: 1:23, non-stop
Airbus A319 (319)
Air Canada AC3578
13:05
Chicago O'Hare (ORD) 2

14:33
Saint Louis (STL) 1
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:28, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-06-27 through 2025-07-03
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-07-06 through 2025-07-13
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-07-14 through 2025-07-21
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Operates only on 2025-07-16
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5524)
Duration: 1:26, non-stop
Canadair CRJ 550 (CR5)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-07-24 through 2025-07-28
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Operates only on 2025-07-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5524)
Duration: 1:26, non-stop
Canadair CRJ 550 (CR5)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-08-01 through 2025-08-08
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-08-11 through 2025-08-18
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:11
Chicago O'Hare (ORD) 2

14:37
Saint Louis (STL) 1
Effective 2025-08-13 through 2025-08-16
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5425)
Duration: 1:26, non-stop
Canadair CRJ 550 (CR5)
Air Canada AC3578
13:20
Chicago O'Hare (ORD) 1

14:47
Saint Louis (STL) 1
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 455)
Duration: 1:27, non-stop
Airbus A319 (319)
Air Canada AC3578
13:20
Chicago O'Hare (ORD) 2

14:50
Saint Louis (STL) 1
Effective 2025-05-03 through 2025-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 3662)
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:20
Chicago O'Hare (ORD) 2

14:50
Saint Louis (STL) 1
Operates only on 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3662)
Duration: 1:30, non-stop
Embraer EMB 170 / EMB 175 (E70)
Air Canada AC3578
13:27
Chicago O'Hare (ORD) 2

14:53
Saint Louis (STL) 1
Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5239)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:27
Chicago O'Hare (ORD) 2

14:53
Saint Louis (STL) 1
Operates only on 2025-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:27
Chicago O'Hare (ORD) 2

14:53
Saint Louis (STL) 1
Effective 2025-06-16 through 2025-06-18
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:27
Chicago O'Hare (ORD) 2

14:53
Saint Louis (STL) 1
Operates only on 2025-06-24
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3654)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:30
Chicago O'Hare (ORD) 2

14:56
Saint Louis (STL) 1
Operates only on 2025-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5557)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3578
13:30
Chicago O'Hare (ORD) 2

14:56
Saint Louis (STL) 1
Operates only on 2025-06-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5557)
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
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  • AC 3578 is a domestic flight departing from the Chicago O'Hare airport (ORD) and arriving at Saint Louis airport (STL).
  • 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 1:23 and 1:30.
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