Austrian flight OS 7735: Chicago O'Hare - Saint Louis

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Tue,Thu-Sun 15:03 Chicago O'Hare (ORD) 2 16:26 Saint Louis (STL) 1
OS 7735 Non-stop Embraer EMB 175 (E7W) 1:23 Effective 2026-04-30 through 2026-10-24
Codeshare flight, operated by United Airlines.(UA 5214)
Wed,Fri,Sat 16:15 Chicago O'Hare (ORD) 2 17:43 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:28 Effective 2026-01-07 through 2026-01-10
Codeshare flight, operated by United Airlines.(UA 4518)
Wed 16:15 Chicago O'Hare (ORD) 2 17:43 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:28 Operates only on 2026-02-11
Codeshare flight, operated by United Airlines.(UA 4518)
Fri 16:20 Chicago O'Hare (ORD) 2 17:45 Saint Louis (STL) 1
OS 7735 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2026-02-13 through 2026-02-27
Codeshare flight, operated by United Airlines.(UA 3577)
Mon,Wed 16:20 Chicago O'Hare (ORD) 2 17:44 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2026-02-16 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 4518)
Fri,Sat 16:20 Chicago O'Hare (ORD) 2 17:44 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2026-03-06 through 2026-03-07
Codeshare flight, operated by United Airlines.(UA 6017)
Mon,Tue,Thu-Sun 16:20 Chicago O'Hare (ORD) 2 17:51 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:31 Effective 2026-03-29 through 2026-04-28
Codeshare flight, operated by United Airlines.(UA 4518)
Mon,Wed,Fri,Sat 16:24 Chicago O'Hare (ORD) 2 17:54 Saint Louis (STL) 1
OS 7735 Non-stop Embraer EMB 175 (E7W) 1:30 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 5873)
Mon,Wed,Fri,Sat 16:35 Chicago O'Hare (ORD) 2 17:59 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2026-03-09 through 2026-03-27
Codeshare flight, operated by United Airlines.(UA 6017)
Mon,Wed,Fri,Sat 16:40 Chicago O'Hare (ORD) 2 18:09 Saint Louis (STL) 1
OS 7735 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective from 2026-10-26
Codeshare flight, operated by United Airlines.(UA 4518)


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Austrian flight OS 7735:
Chicago O'Hare - Saint Louis
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Austrian OS7735
15:03
Chicago O'Hare (ORD) 2

16:26
Saint Louis (STL) 1
Effective 2026-04-30 through 2026-10-24
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5214)
Duration: 1:23, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7735
16:15
Chicago O'Hare (ORD) 2

17:43
Saint Louis (STL) 1
Effective 2026-01-07 through 2026-01-10
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4518)
Duration: 1:28, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Austrian OS7735
16:15
Chicago O'Hare (ORD) 2

17:43
Saint Louis (STL) 1
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4518)
Duration: 1:28, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Austrian OS7735
16:20
Chicago O'Hare (ORD) 2

17:45
Saint Louis (STL) 1
Effective 2026-02-13 through 2026-02-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3577)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7735
16:20
Chicago O'Hare (ORD) 2

17:44
Saint Louis (STL) 1
Effective 2026-02-16 through 2026-03-04
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4518)
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Austrian OS7735
16:20
Chicago O'Hare (ORD) 2

17:44
Saint Louis (STL) 1
Effective 2026-03-06 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 6017)
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Austrian OS7735
16:20
Chicago O'Hare (ORD) 2

17:51
Saint Louis (STL) 1
Effective 2026-03-29 through 2026-04-28
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4518)
Duration: 1:31, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Austrian OS7735
16:24
Chicago O'Hare (ORD) 2

17:54
Saint Louis (STL) 1
Valid until 2026-01-05
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5873)
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7735
16:35
Chicago O'Hare (ORD) 2

17:59
Saint Louis (STL) 1
Effective 2026-03-09 through 2026-03-27
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 6017)
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
Direct Codeshare Flights:
Austrian OS7735
16:40
Chicago O'Hare (ORD) 2

18:09
Saint Louis (STL) 1
Effective from 2026-10-26
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4518)
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
  • OS 7735 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 1:31.
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