All airlines flying from Saint Louis (STL) to Chicago O'Hare (ORD).
| FLIGHT SCHEDULE |
|---|
| Direct Codeshare Flights: |
| Tue,Wed
07:40
Saint Louis (STL) 1
09:09
Chicago O'Hare (ORD) 1 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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 Air Canada 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) |
| Daily
15:10
Saint Louis (STL) 1
16:54
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:44 Valid until 2026-01-05 Codeshare flight, operated by United Airlines.(UA 3528) |
| Mon,Tue,Thu,Sun
15:11
Saint Louis (STL) 1
16:55
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:44 Effective 2026-01-06 through 2026-01-12 Codeshare flight, operated by United Airlines.(UA 3528) |
| Sat
15:11
Saint Louis (STL) 1
16:54
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:43 Operates only on 2026-01-10 Codeshare flight, operated by United Airlines.(UA 4556) |
| Tue,Wed,Fri,Sun
15:11
Saint Louis (STL) 1
16:55
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:44 Effective 2026-01-14 through 2026-01-20 Codeshare flight, operated by United Airlines.(UA 3528) |
| Mon,Wed,Thu
15:11
Saint Louis (STL) 1
16:55
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:44 Effective 2026-01-22 through 2026-01-29 Codeshare flight, operated by United Airlines.(UA 3528) |
| Sat
15:11
Saint Louis (STL) 1
16:54
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:43 Operates only on 2026-01-24 Codeshare flight, operated by United Airlines.(UA 4556) |
| Tue,Wed,Fri,Sun
15:11
Saint Louis (STL) 1
16:55
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:44 Effective 2026-01-30 through 2026-02-08 Codeshare flight, operated by United Airlines.(UA 3528) |
| Wed
15:11
Saint Louis (STL) 1
16:55
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:44 Operates only on 2026-02-11 Codeshare flight, operated by United Airlines.(UA 3528) |
| Daily
15:15
Saint Louis (STL) 1
16:48
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-12 through 2026-03-04 Codeshare flight, operated by United Airlines.(UA 4513) |
| Daily
15:15
Saint Louis (STL) 1
16:43
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:28 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 4487) |
| Daily
15:15
Saint Louis (STL) 1
16:43
Chicago O'Hare (ORD) 1 Air Canada AC 4929 Non-stop Airbus A319 (319) 1:28 Effective from 2026-05-21 Codeshare flight, operated by United Airlines.(UA 1761) |
| Mon,Wed,Thu,Sun
15:23
Saint Louis (STL) 1
16:58
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-03-05 through 2026-03-26 Codeshare flight, operated by United Airlines.(UA 5510) |
| Mon,Wed,Fri,Sun
15:23
Saint Louis (STL) 1
16:53
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2026-03-29 through 2026-04-05 Codeshare flight, operated by United Airlines.(UA 3528) |
| Mon,Sat
15:23
Saint Louis (STL) 1
16:53
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2026-04-11 through 2026-04-18 Codeshare flight, operated by United Airlines.(UA 3528) |
| Tue,Sun
15:23
Saint Louis (STL) 1
16:53
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2026-04-21 through 2026-04-28 Codeshare flight, operated by United Airlines.(UA 3528) |
| Fri,Sat
15:24
Saint Louis (STL) 1
16:59
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-03-06 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 5510) |
| Tue
15:30
Saint Louis (STL) 1
17:05
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-03-10 through 2026-03-24 Codeshare flight, operated by United Airlines.(UA 5510) |
| Mon,Tue,Thu,Sat
18:35
Saint Louis (STL) 1
20:04
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-31 through 2026-04-06 Codeshare flight, operated by United Airlines.(UA 4616) |
| Tue,Wed,Fri,Sun
18:35
Saint Louis (STL) 1
20:04
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-08 through 2026-04-14 Codeshare flight, operated by United Airlines.(UA 4616) |
| Mon,Wed,Thu,Sun
18:35
Saint Louis (STL) 1
20:04
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-16 through 2026-04-22 Codeshare flight, operated by United Airlines.(UA 4616) |
| Mon,Wed,Fri
18:35
Saint Louis (STL) 1
20:04
Chicago O'Hare (ORD) 2 Air Canada AC 4929 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-04-24 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 4616) |
| Tue,Wed,Fri
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 2026-01-07 through 2026-01-13 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 4929 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-01-15 through 2026-01-21 Codeshare flight, operated by United Airlines.(UA 4559) |
| Tue,Fri,Sun
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 2026-01-23 through 2026-01-27 Codeshare flight, operated by United Airlines.(UA 4559) |
- 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.
