Austrian flight OS 7721: Chicago O'Hare - Detroit

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Wed,Fri,Sat 17:45 Chicago O'Hare (ORD) 2 20:10 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2026-03-06 through 2026-03-27
Codeshare flight, operated by United Airlines.(UA 5216)
Mon,Tue,Thu-Sun 17:50 Chicago O'Hare (ORD) 2 20:21 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:31 Effective 2026-03-29 through 2026-04-28
Codeshare flight, operated by United Airlines.(UA 5216)
Mon,Wed,Fri 17:55 Chicago O'Hare (ORD) 1 20:13 Detroit (DTW) E
OS 7721 Non-stop Airbus A320 (320) 1:18 Effective 2026-02-13 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 1991)
Mon,Tue,Thu-Sun 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2026-04-30 through 2026-10-24
Codeshare flight, operated by United Airlines.(UA 5216)
Mon,Wed,Fri,Sat 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective from 2026-10-26
Codeshare flight, operated by United Airlines.(UA 5216)
Wed,Fri,Sat 17:59 Chicago O'Hare (ORD) 1 20:26 Detroit (DTW) E
OS 7721 Non-stop Airbus A320 (320) 1:27 Effective 2026-01-07 through 2026-01-10
Codeshare flight, operated by United Airlines.(UA 2475)
Wed 17:59 Chicago O'Hare (ORD) 1 20:26 Detroit (DTW) E
OS 7721 Non-stop Airbus A320 (320) 1:27 Operates only on 2026-02-11
Codeshare flight, operated by United Airlines.(UA 2475)
Mon,Wed,Fri,Sat 18:10 Chicago O'Hare (ORD) 2 20:58 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:48 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 4773)


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Austrian flight OS 7721:
Chicago O'Hare - Detroit
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Austrian OS7721
17:45
Chicago O'Hare (ORD) 2

20:10
Detroit (DTW) E
Effective 2026-03-06 through 2026-03-27
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5216)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7721
17:50
Chicago O'Hare (ORD) 2

20:21
Detroit (DTW) E
Effective 2026-03-29 through 2026-04-28
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5216)
Duration: 1:31, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7721
17:55
Chicago O'Hare (ORD) 1

20:13
Detroit (DTW) E
Effective 2026-02-13 through 2026-03-04
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1991)
Duration: 1:18, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2026-04-30 through 2026-10-24
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5216)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective from 2026-10-26
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5216)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Austrian OS7721
17:59
Chicago O'Hare (ORD) 1

20:26
Detroit (DTW) E
Effective 2026-01-07 through 2026-01-10
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 2475)
Duration: 1:27, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Austrian OS7721
17:59
Chicago O'Hare (ORD) 1

20:26
Detroit (DTW) E
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2475)
Duration: 1:27, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Austrian OS7721
18:10
Chicago O'Hare (ORD) 2

20:58
Detroit (DTW) E
Valid until 2026-01-05
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4773)
Duration: 1:48, non-stop
Embraer EMB 175 (E7W)
  • OS 7721 is a domestic flight departing from the Chicago O'Hare airport (ORD) and arriving at Detroit airport (DTW).
  • The flight distance is 234 miles, or 377 km.
  • The timezone of the departure airport is UTC-6 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 1:18 and 1:48.
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