All airlines flying from Saint Louis (STL) to Chicago O'Hare (ORD).
| FLIGHT SCHEDULE |
|---|
| Direct Codeshare Flights: |
| Mon,Thu
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-02-02 through 2026-02-09 Codeshare flight, operated by United Airlines.(UA 4559) |
| Tue
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:43 Operates only on 2026-02-10 Codeshare flight, operated by United Airlines.(UA 4559) |
| Daily
09:30
Saint Louis (STL) 1
10:57
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:27 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 4601) |
| Daily
09:30
Saint Louis (STL) 1
10:58
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:28 Effective from 2026-05-21 Codeshare flight, operated by United Airlines.(UA 4601) |
| Mon-Wed,Fri,Sun
09:55
Saint Louis (STL) 1
11:30
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:35 Valid until 2026-01-05 Codeshare flight, operated by United Airlines.(UA 4597) |
| Daily
09:55
Saint Louis (STL) 1
11:28
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-12 through 2026-03-04 Codeshare flight, operated by United Airlines.(UA 4405) |
| Daily
09:57
Saint Louis (STL) 1
11:32
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-01-06 through 2026-02-03 Codeshare flight, operated by United Airlines.(UA 4389) |
| Daily
09:57
Saint Louis (STL) 1
11:32
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-02-05 through 2026-02-11 Codeshare flight, operated by United Airlines.(UA 4389) |
| Daily
10:00
Saint Louis (STL) 1
11:33
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-05 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 4601) |
| Daily
10:00
Saint Louis (STL) 1
11:29
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 4601) |
| Wed
10:10
Saint Louis (STL) 1
11:45
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:35 Operates only on 2026-02-04 Codeshare flight, operated by United Airlines.(UA 4389) |
| Mon,Thu,Sat
11:05
Saint Louis (STL) 1
12:40
Chicago O'Hare (ORD) 2 Air Canada AC 4935 Non-stop Canadair CRJ 550 (CR5) 1:35 Valid until 2026-01-03 Codeshare flight, operated by United Airlines.(UA 4405) |
| Mon
07:40
Saint Louis (STL) 1
09:09
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Boeing 737-900 (739) 1:29 Operates only on 2026-03-09 Codeshare flight, operated by United Airlines.(UA 2138) |
| Mon,Tue
07:40
Saint Louis (STL) 1
09:09
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-17 through 2026-03-23 Codeshare flight, operated by United Airlines.(UA 2138) |
| Wed
07:40
Saint Louis (STL) 1
09:09
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Boeing 737-900 (739) 1:29 Operates only on 2026-03-25 Codeshare flight, operated by United Airlines.(UA 2138) |
| Thu
07:41
Saint Louis (STL) 1
09:14
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:33 Operates only on 2026-02-12 Codeshare flight, operated by United Airlines.(UA 4608) |
| Tue-Thu
07:41
Saint Louis (STL) 1
09:10
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Airbus A319 (319) 1:29 Effective 2026-02-17 through 2026-02-19 Codeshare flight, operated by United Airlines.(UA 1612) |
| Wed-Sun
07:41
Saint Louis (STL) 1
09:10
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Airbus A319 (319) 1:29 Effective 2026-02-25 through 2026-03-01 Codeshare flight, operated by United Airlines.(UA 1612) |
| Fri,Sat
07:41
Saint Louis (STL) 1
09:10
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-07 through 2026-03-14 Codeshare flight, operated by United Airlines.(UA 2138) |
| Sun
07:41
Saint Louis (STL) 1
09:10
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Boeing 737-700 (73G) 1:29 Effective 2026-03-15 through 2026-03-22 Codeshare flight, operated by United Airlines.(UA 2138) |
| Sat
07:41
Saint Louis (STL) 1
09:10
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Boeing 737-900 (739) 1:29 Operates only on 2026-03-21 Codeshare flight, operated by United Airlines.(UA 2138) |
| Fri,Sun
07:45
Saint Louis (STL) 1
09:11
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Airbus A319 (319) 1:26 Effective 2026-04-03 through 2026-04-05 Codeshare flight, operated by United Airlines.(UA 473) |
| Mon,Sat
07:45
Saint Louis (STL) 1
09:11
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Airbus A319 (319) 1:26 Effective 2026-04-11 through 2026-04-13 Codeshare flight, operated by United Airlines.(UA 473) |
| Tue
07:45
Saint Louis (STL) 1
09:11
Chicago O'Hare (ORD) 1 Air Canada AC 4937 Non-stop Airbus A319 (319) 1:26 Operates only on 2026-04-21 Codeshare flight, operated by United Airlines.(UA 473) |
| Mon,Fri-Sun
08:17
Saint Louis (STL) 1
09:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-13 through 2026-02-23 Codeshare flight, operated by United Airlines.(UA 4608) |
| Mon,Tue
08:17
Saint Louis (STL) 1
09:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-24 through 2026-03-03 Codeshare flight, operated by United Airlines.(UA 4608) |
| Tue-Fri
08:17
Saint Louis (STL) 1
09:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-04 through 2026-03-12 Codeshare flight, operated by United Airlines.(UA 4608) |
| Mon,Wed-Fri
08:17
Saint Louis (STL) 1
09:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-16 through 2026-03-20 Codeshare flight, operated by United Airlines.(UA 4608) |
| Tue,Thu-Sat
08:17
Saint Louis (STL) 1
09:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-24 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 4608) |
| Sun
08:19
Saint Louis (STL) 1
09:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:31 Operates only on 2026-03-08 Codeshare flight, operated by United Airlines.(UA 4608) |
| Mon,Wed,Sun
08:26
Saint Louis (STL) 1
09:55
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-01 Codeshare flight, operated by United Airlines.(UA 4608) |
| Sat
08:26
Saint Louis (STL) 1
09:55
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:29 Operates only on 2026-04-18 Codeshare flight, operated by United Airlines.(UA 4608) |
| Tue,Sun
08:26
Saint Louis (STL) 1
09:55
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-26 through 2026-04-28 Codeshare flight, operated by United Airlines.(UA 4608) |
| Mon,Tue,Thu,Sat
13:14
Saint Louis (STL) 1
14:43
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-31 through 2026-04-07 Codeshare flight, operated by United Airlines.(UA 4592) |
| Tue-Fri,Sun
13:14
Saint Louis (STL) 1
14:43
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-08 through 2026-04-19 Codeshare flight, operated by United Airlines.(UA 4592) |
| Mon,Wed-Sat
13:14
Saint Louis (STL) 1
14:43
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-20 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 4592) |
| Tue,Wed,Fri
13:15
Saint Louis (STL) 1
14:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-01-07 through 2026-01-13 Codeshare flight, operated by United Airlines.(UA 4437) |
| Mon,Wed,Thu,Sat
13:15
Saint Louis (STL) 1
14:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-01-15 through 2026-01-21 Codeshare flight, operated by United Airlines.(UA 4437) |
| Tue,Fri,Sun
13:15
Saint Louis (STL) 1
14:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-01-23 through 2026-01-27 Codeshare flight, operated by United Airlines.(UA 4437) |
| Mon,Thu,Sat
13:15
Saint Louis (STL) 1
14:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective 2026-01-31 through 2026-02-09 Codeshare flight, operated by United Airlines.(UA 4437) |
| Tue
13:15
Saint Louis (STL) 1
14:50
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:35 Operates only on 2026-02-10 Codeshare flight, operated by United Airlines.(UA 4437) |
| Daily
18:35
Saint Louis (STL) 1
20:19
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Embraer EMB 175 (E7W) 1:44 Valid until 2026-01-05 Codeshare flight, operated by United Airlines.(UA 5523) |
| Mon,Tue,Thu,Sun
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-01-06 through 2026-01-12 Codeshare flight, operated by United Airlines.(UA 4559) |
| Tue,Wed,Fri
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-01-14 through 2026-01-20 Codeshare flight, operated by United Airlines.(UA 4559) |
| Mon,Wed,Thu
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-01-22 through 2026-01-29 Codeshare flight, operated by United Airlines.(UA 4559) |
| Tue,Wed,Fri,Sun
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-01-30 through 2026-02-08 Codeshare flight, operated by United Airlines.(UA 4559) |
| Wed
18:40
Saint Louis (STL) 1
20:23
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Canadair CRJ 550 (CR5) 1:43 Operates only on 2026-02-11 Codeshare flight, operated by United Airlines.(UA 4559) |
| Daily
18:49
Saint Louis (STL) 1
20:17
Chicago O'Hare (ORD) 2 Air Canada AC 4937 Non-stop Embraer EMB 175 (E7W) 1:28 Effective 2026-04-30 through 2026-10-24 Codeshare flight, operated by United Airlines.(UA 5684) |
| Daily
05:00
Saint Louis (STL) 1
06:20
Chicago O'Hare (ORD) 2 Air Canada AC 4951 Non-stop Canadair CRJ 550 (CR5) 1:20 Effective 2026-05-21 through 2026-08-17 Codeshare flight, operated by United Airlines.(UA 4537) |
| Tue,Thu,Sat
07:45
Saint Louis (STL) 1
09:11
Chicago O'Hare (ORD) 1 Air Canada AC 4951 Non-stop Airbus A319 (319) 1:26 Effective 2026-03-31 through 2026-04-04 Codeshare flight, operated by United Airlines.(UA 473) |
- A domestic route 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 1:16 and 1:44.
