Austrian flight OS 7721: Chicago O'Hare - Detroit

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Fri 14:50 Chicago O'Hare (ORD) 1 17:18 Detroit (DTW) E
OS 7721 Non-stop Airbus A319 (319) 1:28 Effective 2025-06-27 through 2025-08-15
Codeshare flight, operated by United Airlines.(UA 2329)
Sun 14:50 Chicago O'Hare (ORD) 1 17:18 Detroit (DTW) E
OS 7721 Non-stop Boeing 737-700 (73G) 1:28 Effective 2025-06-29 through 2025-08-17
Codeshare flight, operated by United Airlines.(UA 2329)
Sat 15:00 Chicago O'Hare (ORD) 2 17:31 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:31 Effective 2025-05-24 through 2025-06-21
Codeshare flight, operated by United Airlines.(UA 3569)
Mon,Tue,Thu-Sun 17:50 Chicago O'Hare (ORD) 2 20:22 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:32 Valid until 2025-05-20
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Tue,Thu-Sun 17:50 Chicago O'Hare (ORD) 2 20:26 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:36 Effective 2025-09-25 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 5833)
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 2025-08-19 through 2025-09-23
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Wed,Fri 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2025-10-27 through 2025-12-05
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Wed,Fri-Sun 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2025-12-06 through 2026-01-02
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Wed,Fri,Sun 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2026-01-05 through 2026-01-16
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Wed,Fri,Sun 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2026-01-19 through 2026-01-30
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Wed,Fri,Sun 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective 2026-02-02 through 2026-02-13
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Wed,Fri,Sun 17:55 Chicago O'Hare (ORD) 2 20:20 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:25 Effective from 2026-02-16
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Tue,Thu,Fri,Sun 18:05 Chicago O'Hare (ORD) 2 20:39 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:34 Effective 2025-05-22 through 2025-06-24
Codeshare flight, operated by United Airlines.(UA 5833)
Mon,Tue,Thu,Sat 18:11 Chicago O'Hare (ORD) 2 20:45 Detroit (DTW) E
OS 7721 Non-stop Embraer EMB 175 (E7W) 1:34 Effective 2025-06-26 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 5833)
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Austrian flight OS 7721:
Chicago O'Hare - Detroit
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Austrian OS7721
14:50
Chicago O'Hare (ORD) 1

17:18
Detroit (DTW) E
Effective 2025-06-27 through 2025-08-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2329)
Duration: 1:28, non-stop
Airbus A319 (319)
Austrian OS7721
14:50
Chicago O'Hare (ORD) 1

17:18
Detroit (DTW) E
Effective 2025-06-29 through 2025-08-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 2329)
Duration: 1:28, non-stop
Boeing 737-700 (73G)
Austrian OS7721
15:00
Chicago O'Hare (ORD) 2

17:31
Detroit (DTW) E
Effective 2025-05-24 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 3569)
Duration: 1:31, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:50
Chicago O'Hare (ORD) 2

20:22
Detroit (DTW) E
Valid until 2025-05-20
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:32, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:50
Chicago O'Hare (ORD) 2

20:26
Detroit (DTW) E
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:36, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2025-08-19 through 2025-09-23
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2025-10-27 through 2025-12-05
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2025-12-06 through 2026-01-02
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2026-01-05 through 2026-01-16
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2026-01-19 through 2026-01-30
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective 2026-02-02 through 2026-02-13
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
17:55
Chicago O'Hare (ORD) 2

20:20
Detroit (DTW) E
Effective from 2026-02-16
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
18:05
Chicago O'Hare (ORD) 2

20:39
Detroit (DTW) E
Effective 2025-05-22 through 2025-06-24
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:34, non-stop
Embraer EMB 175 (E7W)
Austrian OS7721
18:11
Chicago O'Hare (ORD) 2

20:45
Detroit (DTW) E
Effective 2025-06-26 through 2025-08-18
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5833)
Duration: 1:34, non-stop
Embraer EMB 175 (E7W)
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Parallax here ORD-DTW
  • 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 1:25 and 1:36.
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