United Airlines flights from Saint Louis (STL) to Chicago O'Hare (ORD).

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 13:10 Saint Louis (STL) 1 14:38 Chicago O'Hare (ORD) 2
United Airlines UA 4592 Non-stop Canadair CRJ 550 (CR5) 1:28 Effective 2026-04-30 through 2026-05-20
Daily 13:14 Saint Louis (STL) 1 14:43 Chicago O'Hare (ORD) 2
United Airlines UA 4592 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-29
Daily 09:55 Saint Louis (STL) 1 11:30 Chicago O'Hare (ORD) 2
United Airlines UA 4597 Non-stop Canadair CRJ 550 (CR5) 1:35 Valid until 2026-01-05
Daily 09:30 Saint Louis (STL) 1 10:57 Chicago O'Hare (ORD) 2
United Airlines UA 4601 Non-stop Canadair CRJ 550 (CR5) 1:27 Effective 2026-04-30 through 2026-05-20
Daily 09:30 Saint Louis (STL) 1 10:58 Chicago O'Hare (ORD) 2
United Airlines UA 4601 Non-stop Canadair CRJ 550 (CR5) 1:28 Effective from 2026-05-21
Daily 10:00 Saint Louis (STL) 1 11:33 Chicago O'Hare (ORD) 2
United Airlines UA 4601 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-05 through 2026-03-28
Daily 10:00 Saint Louis (STL) 1 11:29 Chicago O'Hare (ORD) 2
United Airlines UA 4601 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-29
Thu 07:41 Saint Louis (STL) 1 09:14 Chicago O'Hare (ORD) 2
United Airlines UA 4608 Non-stop Canadair CRJ 550 (CR5) 1:33 Operates only on 2026-02-12
Daily 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
United Airlines UA 4608 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-13 through 2026-03-07
Daily 08:17 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
United Airlines UA 4608 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-09 through 2026-03-28
Sun 08:19 Saint Louis (STL) 1 09:50 Chicago O'Hare (ORD) 2
United Airlines UA 4608 Non-stop Canadair CRJ 550 (CR5) 1:31 Operates only on 2026-03-08
Daily 08:26 Saint Louis (STL) 1 09:55 Chicago O'Hare (ORD) 2
United Airlines UA 4608 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-29
Daily 18:35 Saint Louis (STL) 1 20:04 Chicago O'Hare (ORD) 2
United Airlines UA 4616 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-03-29 through 2026-04-29
Daily 18:45 Saint Louis (STL) 1 20:09 Chicago O'Hare (ORD) 2
United Airlines UA 4616 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective from 2026-10-25
Daily 19:00 Saint Louis (STL) 1 20:33 Chicago O'Hare (ORD) 2
United Airlines UA 5417 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-03-05 through 2026-03-28
Mon,Wed,Thu,Sun 15:23 Saint Louis (STL) 1 16:58 Chicago O'Hare (ORD) 2
United Airlines UA 5510 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-03-05 through 2026-03-26
Fri,Sat 15:24 Saint Louis (STL) 1 16:59 Chicago O'Hare (ORD) 2
United Airlines UA 5510 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-03-06 through 2026-03-28
Tue 15:30 Saint Louis (STL) 1 17:05 Chicago O'Hare (ORD) 2
United Airlines UA 5510 Non-stop Embraer EMB 175 (E7W) 1:35 Effective 2026-03-10 through 2026-03-24
Daily 18:35 Saint Louis (STL) 1 20:19 Chicago O'Hare (ORD) 2
United Airlines UA 5523 Non-stop Embraer EMB 175 (E7W) 1:44 Valid until 2026-01-05
Daily 18:49 Saint Louis (STL) 1 20:17 Chicago O'Hare (ORD) 2
United Airlines UA 5684 Non-stop Embraer EMB 175 (E7W) 1:28 Effective 2026-04-30 through 2026-10-24
Non-Direct Flights:
Daily 16:30 Saint Louis (STL) 1 05:47 Chicago O'Hare (ORD) 1
United Airlines UA 2651 2-stop Airbus A319 (319) 13:17 Effective 2026-05-21 through 2026-09-23
The flight arrives 1 day after departure.
Daily 18:00 Saint Louis (STL) 1 05:50 Chicago O'Hare (ORD) 1
United Airlines UA 2651 2-stop Boeing 737-800 (738) 11:50 Effective 2026-04-30 through 2026-05-20
The flight arrives 1 day after departure.
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United Airlines flights from Saint Louis (STL) to Chicago O'Hare (ORD).
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4592
13:10
Saint Louis (STL) 1

14:38
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4592
13:14
Saint Louis (STL) 1

14:43
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4597
09:55
Saint Louis (STL) 1

11:30
Chicago O'Hare (ORD) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4601
09:30
Saint Louis (STL) 1

10:57
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:27, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4601
09:30
Saint Louis (STL) 1

10:58
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4601
10:00
Saint Louis (STL) 1

11:33
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4601
10:00
Saint Louis (STL) 1

11:29
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4608
07:41
Saint Louis (STL) 1

09:14
Chicago O'Hare (ORD) 2
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4608
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-02-13 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4608
08:17
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Effective 2026-03-09 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4608
08:19
Saint Louis (STL) 1

09:50
Chicago O'Hare (ORD) 2
Operates only on 2026-03-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:31, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4608
08:26
Saint Louis (STL) 1

09:55
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4616
18:35
Saint Louis (STL) 1

20:04
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4616
18:45
Saint Louis (STL) 1

20:09
Chicago O'Hare (ORD) 2
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5417
19:00
Saint Louis (STL) 1

20:33
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5510
15:23
Saint Louis (STL) 1

16:58
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-26
Mon
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5510
15:24
Saint Louis (STL) 1

16:59
Chicago O'Hare (ORD) 2
Effective 2026-03-06 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5510
15:30
Saint Louis (STL) 1

17:05
Chicago O'Hare (ORD) 2
Effective 2026-03-10 through 2026-03-24
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5523
18:35
Saint Louis (STL) 1

20:19
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 UA5684
18:49
Saint Louis (STL) 1

20:17
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Embraer EMB 175 (E7W)
Non-Direct Flights:
United Airlines UA2651
16:30
Saint Louis (STL) 1

05:47(+1)
Chicago O'Hare (ORD) 1
Effective 2026-05-21 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 13:17, 2-stop
Airbus A319 (319)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA2651
18:00
Saint Louis (STL) 1

05:50(+1)
Chicago O'Hare (ORD) 1
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 11:50, 2-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
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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.
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