Air Canada flight AC 3974: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Thu 07:45 Denver (DEN) 08:53 Tucson (TUS)
AC 3974 Non-stop Canadair CRJ 700 (CR7) 2:08 Operates only on 2025-05-01
Codeshare flight, operated by United Airlines.(UA 4637)
Daily 07:45 Denver (DEN) 08:56 Tucson (TUS)
AC 3974 Non-stop Embraer EMB 175 (E7W) 2:11 Effective 2025-05-02 through 2025-05-21
Codeshare flight, operated by United Airlines.(UA 4637)
Tue,Wed,Sat 07:45 Denver (DEN) 08:54 Tucson (TUS)
AC 3974 Non-stop Embraer EMB 175 (E7W) 2:09 Effective 2025-05-24 through 2025-05-31
Codeshare flight, operated by United Airlines.(UA 5581)
Daily 07:50 Denver (DEN) 09:01 Tucson (TUS)
AC 3974 Non-stop Embraer EMB 175 (E7W) 2:11 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by United Airlines.(UA 4637)
Daily 07:50 Denver (DEN) 10:01 Tucson (TUS)
AC 3974 Non-stop Embraer EMB 175 (E7W) 2:11 Effective from 2025-11-02
Codeshare flight, operated by United Airlines.(UA 4637)
Daily 16:00 Chicago O'Hare (ORD) 2 18:27 Cincinnati (CVG)
AC 3974 Non-stop Embraer EMB 175 (E7W) 1:27 Effective 2025-08-19 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 3713)
Mon,Thu,Fri 16:32 Chicago O'Hare (ORD) 2 18:59 Cincinnati (CVG)
AC 3974 Non-stop Embraer EMB 175 (E7W) 1:27 Effective 2025-05-22 through 2025-06-23
Codeshare flight, operated by United Airlines.(UA 5654)
Sun 16:32 Chicago O'Hare (ORD) 2 18:59 Cincinnati (CVG)
AC 3974 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:27 Effective 2025-06-01 through 2025-06-22
Codeshare flight, operated by United Airlines.(UA 3534)
Mon,Thu,Fri,Sun 16:35 Chicago O'Hare (ORD) 2 19:02 Cincinnati (CVG)
AC 3974 Non-stop Embraer EMB 175 (E7W) 1:27 Effective 2025-06-26 through 2025-07-03
Codeshare flight, operated by United Airlines.(UA 3433)
Mon,Thu,Fri,Sun 16:35 Chicago O'Hare (ORD) 2 19:02 Cincinnati (CVG)
AC 3974 Non-stop Embraer EMB 175 (E7W) 1:27 Effective 2025-07-06 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 3433)
Wed,Sat 18:10 Chicago O'Hare (ORD) 2 20:37 Cincinnati (CVG)
AC 3974 Non-stop Embraer EMB 175 (E7W) 1:27 Effective 2025-06-28 through 2025-08-16
Codeshare flight, operated by United Airlines.(UA 3433)
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This flight number is listed as serving the following routes:


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Air Canada flight AC 3974: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3974
07:45
Denver (DEN)

08:53
Tucson (TUS)
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4637)
Duration: 2:08, non-stop
Canadair CRJ 700 (CR7)
Air Canada AC3974
07:45
Denver (DEN)

08:56
Tucson (TUS)
Effective 2025-05-02 through 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4637)
Duration: 2:11, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
07:45
Denver (DEN)

08:54
Tucson (TUS)
Effective 2025-05-24 through 2025-05-31
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 5581)
Duration: 2:09, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
07:50
Denver (DEN)

09:01
Tucson (TUS)
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4637)
Duration: 2:11, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
07:50
Denver (DEN)

10:01
Tucson (TUS)
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4637)
Duration: 2:11, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
16:00
Chicago O'Hare (ORD) 2

18:27
Cincinnati (CVG)
Effective 2025-08-19 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 3713)
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
16:32
Chicago O'Hare (ORD) 2

18:59
Cincinnati (CVG)
Effective 2025-05-22 through 2025-06-23
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5654)
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
16:32
Chicago O'Hare (ORD) 2

18:59
Cincinnati (CVG)
Effective 2025-06-01 through 2025-06-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3534)
Duration: 1:27, non-stop
Embraer EMB 170 / EMB 175 (E70)
Air Canada AC3974
16:35
Chicago O'Hare (ORD) 2

19:02
Cincinnati (CVG)
Effective 2025-06-26 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3433)
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
16:35
Chicago O'Hare (ORD) 2

19:02
Cincinnati (CVG)
Effective 2025-07-06 through 2025-08-18
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3433)
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3974
18:10
Chicago O'Hare (ORD) 2

20:37
Cincinnati (CVG)
Effective 2025-06-28 through 2025-08-16
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 3433)
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Cincinnati (CVG)
  • Denver (DEN) - Tucson (TUS)
All Air Canada flights
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