All airlines flying from Saint Louis (STL) to Chicago O'Hare (ORD).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 07:45 Saint Louis (STL) 1 09:11 Chicago O'Hare (ORD) 1
United Airlines UA 473 Non-stop Airbus A319 (319) 1:26 Effective 2026-03-29 through 2026-04-29
Daily 07:45 Saint Louis (STL) 1 09:07 Chicago O'Hare (ORD) 1
United Airlines UA 473 Non-stop Airbus A319 (319) 1:22 Effective 2026-04-30 through 2026-05-20
Mon-Fri,Sun 06:00 Saint Louis (STL) 1 07:26 Chicago O'Hare (ORD) 3
American Airlines AA 810 Non-stop Airbus A319 (319) 1:26 Effective 2026-02-13 through 2026-03-06
Sun 06:00 Saint Louis (STL) 1 07:26 Chicago O'Hare (ORD) 3
American Airlines AA 1223 Non-stop Airbus A319 (319) 1:26 Effective 2026-03-08 through 2026-04-05
Mon-Fri 06:00 Saint Louis (STL) 1 07:23 Chicago O'Hare (ORD) 3
American Airlines AA 1223 Non-stop Airbus A319 (319) 1:23 Effective 2026-03-09 through 2026-04-06
Daily 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
United Airlines UA 1612 Non-stop Airbus A319 (319) 1:29 Effective 2026-02-13 through 2026-03-04
Daily 17:18 Saint Louis (STL) 1 18:34 Chicago O'Hare (ORD) 1
United Airlines UA 1744 Non-stop Airbus A319 (319) 1:16 Effective from 2026-04-30
Daily 15:15 Saint Louis (STL) 1 16:43 Chicago O'Hare (ORD) 1
United Airlines UA 1761 Non-stop Airbus A319 (319) 1:28 Effective from 2026-05-21
Daily 06:01 Saint Louis (STL) 1 07:25 Chicago O'Hare (ORD) 3
American Airlines AA 1926 Non-stop Boeing 737-800 (738) 1:24 Effective 2026-07-02 through 2026-08-04
Daily 06:02 Saint Louis (STL) 1 07:25 Chicago O'Hare (ORD) 3
American Airlines AA 1926 Non-stop Airbus A319 (319) 1:23 Effective from 2026-10-05
Daily 06:04 Saint Louis (STL) 1 07:25 Chicago O'Hare (ORD) 3
American Airlines AA 1926 Non-stop Airbus A319 (319) 1:21 Effective 2026-05-21 through 2026-07-01
Daily 06:06 Saint Louis (STL) 1 07:30 Chicago O'Hare (ORD) 3
American Airlines AA 1926 Non-stop Airbus A319 (319) 1:24 Effective 2026-08-05 through 2026-09-08
Daily 06:06 Saint Louis (STL) 1 07:25 Chicago O'Hare (ORD) 3
American Airlines AA 1926 Non-stop Airbus A319 (319) 1:19 Effective 2026-09-09 through 2026-10-04
Daily 11:14 Saint Louis (STL) 1 12:35 Chicago O'Hare (ORD) 3
American Airlines AA 1926 Non-stop Airbus A319 (319) 1:21 Effective 2026-04-07 through 2026-05-20
Daily 07:23 Saint Louis (STL) 1 08:48 Chicago O'Hare (ORD) 3
American Airlines AA 1997 Non-stop Boeing 737-800 (738) 1:25 Effective 2026-08-05 through 2026-09-08
Daily 07:38 Saint Louis (STL) 1 09:05 Chicago O'Hare (ORD) 3
American Airlines AA 1997 Non-stop Boeing 737-800 (738) 1:27 Effective from 2026-10-05
Daily 07:44 Saint Louis (STL) 1 09:05 Chicago O'Hare (ORD) 3
American Airlines AA 1997 Non-stop Boeing 737-800 (738) 1:21 Effective 2026-09-09 through 2026-10-04
Mon-Wed 07:40 Saint Louis (STL) 1 09:09 Chicago O'Hare (ORD) 1
United Airlines UA 2138 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-09 through 2026-03-25
Thu-Sat 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
United Airlines UA 2138 Non-stop Boeing 737-900 (739) 1:29 Effective 2026-03-05 through 2026-03-28
Sun 07:41 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 1
United Airlines UA 2138 Non-stop Boeing 737-700 (73G) 1:29 Effective 2026-03-08 through 2026-03-22
Daily 07:42 Saint Louis (STL) 1 09:05 Chicago O'Hare (ORD) 3
American Airlines AA 2324 Non-stop Boeing 737 MAX 8 (7M8) 1:23 Effective 2026-05-21 through 2026-08-04
Daily 06:05 Saint Louis (STL) 1 07:25 Chicago O'Hare (ORD) 3
American Airlines AA 2444 Non-stop Boeing 737-800 (738) 1:20 Effective 2026-04-07 through 2026-05-20
Thu 06:00 Saint Louis (STL) 1 07:23 Chicago O'Hare (ORD) 3
American Airlines AA 3458 Non-stop Embraer EMB 175 (E75) 1:23 Operates only on 2026-02-12
Mon,Thu,Fri,Sun 13:35 Saint Louis (STL) 1 14:57 Chicago O'Hare (ORD) 3
American Airlines AA 3458 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:22 Effective 2026-01-08 through 2026-02-09
Tue,Wed 15:20 Saint Louis (STL) 1 16:42 Chicago O'Hare (ORD) 3
American Airlines AA 3458 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:22 Effective 2026-01-06 through 2026-02-11
Mon,Tue,Thu-Sun 20:01 Saint Louis (STL) 1 21:30 Chicago O'Hare (ORD) 3
American Airlines AA 3461 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:29 Valid until 2026-01-05
Daily 16:32 Saint Louis (STL) 1 18:00 Chicago O'Hare (ORD) 3
American Airlines AA 3479 Non-stop Embraer EMB 175 (E75) 1:28 Effective from 2026-10-05
Wed 11:20 Saint Louis (STL) 1 12:57 Chicago O'Hare (ORD) 2
United Airlines UA 3486 Non-stop Embraer EMB 175 (E7W) 1:37 Operates only on 2026-02-04
Daily 13:27 Saint Louis (STL) 1 14:55 Chicago O'Hare (ORD) 2
United Airlines UA 3528 Non-stop Embraer EMB 175 (E7W) 1:28 Effective from 2026-05-21
Daily 15:10 Saint Louis (STL) 1 16:54 Chicago O'Hare (ORD) 2
United Airlines UA 3528 Non-stop Embraer EMB 175 (E7W) 1:44 Valid until 2026-01-05
Mon-Fri,Sun 15:11 Saint Louis (STL) 1 16:55 Chicago O'Hare (ORD) 2
United Airlines UA 3528 Non-stop Embraer EMB 175 (E7W) 1:44 Effective 2026-01-06 through 2026-02-11
Daily 15:23 Saint Louis (STL) 1 16:53 Chicago O'Hare (ORD) 2
United Airlines UA 3528 Non-stop Embraer EMB 175 (E7W) 1:30 Effective 2026-03-29 through 2026-04-29
Tue 14:21 Saint Louis (STL) 1 15:44 Chicago O'Hare (ORD) 3
American Airlines AA 3547 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:23 Effective 2026-03-10 through 2026-03-31
Mon,Wed-Fri,Sun 14:32 Saint Louis (STL) 1 15:55 Chicago O'Hare (ORD) 3
American Airlines AA 3547 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:23 Effective 2026-03-08 through 2026-04-06
Daily 16:18 Saint Louis (STL) 1 17:43 Chicago O'Hare (ORD) 3
American Airlines AA 3620 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:25 Effective 2026-08-05 through 2026-09-08
Tue 10:04 Saint Louis (STL) 1 11:28 Chicago O'Hare (ORD) 3
American Airlines AA 3712 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:24 Effective 2026-03-10 through 2026-03-31
Mon,Wed-Sun 10:07 Saint Louis (STL) 1 11:31 Chicago O'Hare (ORD) 3
American Airlines AA 3712 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:24 Effective 2026-03-08 through 2026-04-06
Sun 18:33 Saint Louis (STL) 1 20:08 Chicago O'Hare (ORD) 3
American Airlines AA 3714 Non-stop Embraer EMB 175 (E75) 1:35 Effective 2026-03-08 through 2026-04-05
Mon,Wed-Sat 18:33 Saint Louis (STL) 1 20:08 Chicago O'Hare (ORD) 3
American Airlines AA 3714 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:35 Effective 2026-03-09 through 2026-04-06
Fri 18:45 Saint Louis (STL) 1 20:20 Chicago O'Hare (ORD) 2
United Airlines UA 3714 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-02-13 through 2026-02-27
Mon,Wed-Fri,Sun 18:44 Saint Louis (STL) 1 20:15 Chicago O'Hare (ORD) 3
American Airlines AA 3730 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:31 Effective 2026-01-07 through 2026-02-11
Sun 09:20 Saint Louis (STL) 1 10:44 Chicago O'Hare (ORD) 3
American Airlines AA 3734 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:24 Effective 2026-03-08 through 2026-04-05
Mon-Fri,Sun 06:00 Saint Louis (STL) 1 07:27 Chicago O'Hare (ORD) 3
American Airlines AA 3741 Non-stop Embraer EMB 175 (E75) 1:27 Effective 2026-01-07 through 2026-01-16
Mon-Fri,Sun 06:00 Saint Louis (STL) 1 07:27 Chicago O'Hare (ORD) 3
American Airlines AA 3741 Non-stop Embraer EMB 175 (E75) 1:27 Effective 2026-01-19 through 2026-02-11
Sun 11:05 Saint Louis (STL) 1 12:34 Chicago O'Hare (ORD) 3
American Airlines AA 3741 Non-stop Embraer EMB 175 (E75) 1:29 Operates only on 2026-01-18
Daily 14:50 Saint Louis (STL) 1 16:10 Chicago O'Hare (ORD) 3
American Airlines AA 3815 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:20 Effective 2026-05-21 through 2026-07-01
Daily 14:45 Saint Louis (STL) 1 16:10 Chicago O'Hare (ORD) 3
American Airlines AA 3829 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:25 Effective 2026-07-02 through 2026-08-04
Daily 16:39 Saint Louis (STL) 1 18:00 Chicago O'Hare (ORD) 3
American Airlines AA 3870 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:21 Effective 2026-04-07 through 2026-05-20
Sun 06:00 Saint Louis (STL) 1 07:30 Chicago O'Hare (ORD) 3
American Airlines AA 4077 Non-stop Embraer EMB 175 (E75) 1:30 Operates only on 2026-01-04
Daily 07:50 Saint Louis (STL) 1 09:10 Chicago O'Hare (ORD) 3
American Airlines AA 4135 Non-stop Embraer EMB 175 (E75) 1:20 Effective 2026-04-07 through 2026-05-20
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All airlines flying from Saint Louis (STL) to Chicago O'Hare (ORD).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA473
07:45
Saint Louis (STL) 1

09:11
Chicago O'Hare (ORD) 1
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA473
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
Duration: 1:22, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA810
06:00
Saint Louis (STL) 1

07:26
Chicago O'Hare (ORD) 3
Effective 2026-02-13 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1223
06:00
Saint Louis (STL) 1

07:26
Chicago O'Hare (ORD) 3
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:26, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1223
06:00
Saint Louis (STL) 1

07:23
Chicago O'Hare (ORD) 3
Effective 2026-03-09 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:23, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1612
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-02-13 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1744
17:18
Saint Louis (STL) 1

18:34
Chicago O'Hare (ORD) 1
Effective from 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:16, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1761
15:15
Saint Louis (STL) 1

16:43
Chicago O'Hare (ORD) 1
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1926
06:01
Saint Louis (STL) 1

07:25
Chicago O'Hare (ORD) 3
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Boeing 737-800 (738)
Direct Flights:
American Airlines AA1926
06:02
Saint Louis (STL) 1

07:25
Chicago O'Hare (ORD) 3
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1926
06:04
Saint Louis (STL) 1

07:25
Chicago O'Hare (ORD) 3
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1926
06:06
Saint Louis (STL) 1

07:30
Chicago O'Hare (ORD) 3
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1926
06:06
Saint Louis (STL) 1

07:25
Chicago O'Hare (ORD) 3
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:19, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1926
11:14
Saint Louis (STL) 1

12:35
Chicago O'Hare (ORD) 3
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA1997
07:23
Saint Louis (STL) 1

08:48
Chicago O'Hare (ORD) 3
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:25, non-stop
Boeing 737-800 (738)
Direct Flights:
American Airlines AA1997
07:38
Saint Louis (STL) 1

09:05
Chicago O'Hare (ORD) 3
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:27, non-stop
Boeing 737-800 (738)
Direct Flights:
American Airlines AA1997
07:44
Saint Louis (STL) 1

09:05
Chicago O'Hare (ORD) 3
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA2138
07:40
Saint Louis (STL) 1

09:09
Chicago O'Hare (ORD) 1
Effective 2026-03-09 through 2026-03-25
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA2138
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 1:29, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA2138
07:41
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 1
Effective 2026-03-08 through 2026-03-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:29, non-stop
Boeing 737-700 (73G)
Direct Flights:
American Airlines AA2324
07:42
Saint Louis (STL) 1

09:05
Chicago O'Hare (ORD) 3
Effective 2026-05-21 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
American Airlines AA2444
06:05
Saint Louis (STL) 1

07:25
Chicago O'Hare (ORD) 3
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Boeing 737-800 (738)
Direct Flights:
American Airlines AA3458
06:00
Saint Louis (STL) 1

07:23
Chicago O'Hare (ORD) 3
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:23, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3458
13:35
Saint Louis (STL) 1

14:57
Chicago O'Hare (ORD) 3
Effective 2026-01-08 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:22, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3458
15:20
Saint Louis (STL) 1

16:42
Chicago O'Hare (ORD) 3
Effective 2026-01-06 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:22, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3461
20:01
Saint Louis (STL) 1

21:30
Chicago O'Hare (ORD) 3
Valid until 2026-01-05
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3479
16:32
Saint Louis (STL) 1

18:00
Chicago O'Hare (ORD) 3
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Embraer EMB 175 (E75)
Direct Flights:
United Airlines UA3486
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
-
Duration: 1:37, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3528
13:27
Saint Louis (STL) 1

14:55
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3528
15:10
Saint Louis (STL) 1

16:54
Chicago O'Hare (ORD) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3528
15:11
Saint Louis (STL) 1

16:55
Chicago O'Hare (ORD) 2
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:44, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3528
15:23
Saint Louis (STL) 1

16:53
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
American Airlines AA3547
14:21
Saint Louis (STL) 1

15:44
Chicago O'Hare (ORD) 3
Effective 2026-03-10 through 2026-03-31
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:23, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3547
14:32
Saint Louis (STL) 1

15:55
Chicago O'Hare (ORD) 3
Effective 2026-03-08 through 2026-04-06
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:23, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3620
16:18
Saint Louis (STL) 1

17:43
Chicago O'Hare (ORD) 3
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:25, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3712
10:04
Saint Louis (STL) 1

11:28
Chicago O'Hare (ORD) 3
Effective 2026-03-10 through 2026-03-31
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:24, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3712
10:07
Saint Louis (STL) 1

11:31
Chicago O'Hare (ORD) 3
Effective 2026-03-08 through 2026-04-06
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3714
18:33
Saint Louis (STL) 1

20:08
Chicago O'Hare (ORD) 3
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:35, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3714
18:33
Saint Louis (STL) 1

20:08
Chicago O'Hare (ORD) 3
Effective 2026-03-09 through 2026-04-06
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:35, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3714
18:45
Saint Louis (STL) 1

20:20
Chicago O'Hare (ORD) 2
Effective 2026-02-13 through 2026-02-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
American Airlines AA3730
18:44
Saint Louis (STL) 1

20:15
Chicago O'Hare (ORD) 3
Effective 2026-01-07 through 2026-02-11
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:31, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3734
09:20
Saint Louis (STL) 1

10:44
Chicago O'Hare (ORD) 3
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:24, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3741
06:00
Saint Louis (STL) 1

07:27
Chicago O'Hare (ORD) 3
Effective 2026-01-07 through 2026-01-16
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:27, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3741
06:00
Saint Louis (STL) 1

07:27
Chicago O'Hare (ORD) 3
Effective 2026-01-19 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:27, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3741
11:05
Saint Louis (STL) 1

12:34
Chicago O'Hare (ORD) 3
Operates only on 2026-01-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:29, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3815
14:50
Saint Louis (STL) 1

16:10
Chicago O'Hare (ORD) 3
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3829
14:45
Saint Louis (STL) 1

16:10
Chicago O'Hare (ORD) 3
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:25, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3870
16:39
Saint Louis (STL) 1

18:00
Chicago O'Hare (ORD) 3
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4077
06:00
Saint Louis (STL) 1

07:30
Chicago O'Hare (ORD) 3
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4135
07:50
Saint Louis (STL) 1

09:10
Chicago O'Hare (ORD) 3
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E75)
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  • 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.
Return (ORD-STL) flights
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