Air Canada flight AC 3943: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Fri 07:10 Chicago O'Hare (ORD) 2 09:56 Buffalo (BUF)
AC 3943 Non-stop Canadair CRJ 550 (CR5) 1:46 Effective 2025-05-22 through 2025-05-30
Codeshare flight, operated by United Airlines.(UA 4440)
Mon-Fri,Sun 07:10 Chicago O'Hare (ORD) 2 09:56 Buffalo (BUF)
AC 3943 Non-stop Canadair CRJ 550 (CR5) 1:46 Effective 2025-06-01 through 2025-06-25
Codeshare flight, operated by United Airlines.(UA 4440)
Mon-Fri 07:15 Chicago O'Hare (ORD) 1 09:54 Buffalo (BUF)
AC 3943 Non-stop Airbus A319 (319) 1:39 Effective 2025-06-26 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 2038)
Sat 07:15 Chicago O'Hare (ORD) 2 09:58 Buffalo (BUF)
AC 3943 Non-stop Embraer EMB 175 (E7W) 1:43 Effective 2025-06-28 through 2025-08-16
Codeshare flight, operated by United Airlines.(UA 3508)
Sun 07:20 Chicago O'Hare (ORD) 2 10:03 Buffalo (BUF)
AC 3943 Non-stop Embraer EMB 175 (E7W) 1:43 Effective 2025-06-29 through 2025-08-17
Codeshare flight, operated by United Airlines.(UA 3508)
Daily 17:20 Las Vegas Harry Reid (LAS) 3 19:08 San Francisco (SFO) 3
AC 3943 Non-stop Boeing 737-900 (739) 1:48 Effective from 2025-10-26
Codeshare flight, operated by United Airlines.(UA 2110)
Daily 18:20 Las Vegas Harry Reid (LAS) 3 20:03 San Francisco (SFO) 3
AC 3943 Non-stop Boeing 737 MAX 9 (7M9) 1:43 Valid until 2025-05-20
Codeshare flight, operated by United Airlines.(UA 2110)
Wed 18:20 Las Vegas Harry Reid (LAS) 3 20:03 San Francisco (SFO) 3
AC 3943 Non-stop Boeing 737-900 (739) 1:43 Operates only on 2025-05-21
Codeshare flight, operated by United Airlines.(UA 2110)
Daily 18:28 Las Vegas Harry Reid (LAS) 3 20:10 San Francisco (SFO) 3
AC 3943 Non-stop Boeing 737 MAX 9 (7M9) 1:42 Effective 2025-08-19 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 2110)
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This flight number is listed as serving the following routes:


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Air Canada flight AC 3943: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3943
07:10
Chicago O'Hare (ORD) 2

09:56
Buffalo (BUF)
Effective 2025-05-22 through 2025-05-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4440)
Duration: 1:46, non-stop
Canadair CRJ 550 (CR5)
Air Canada AC3943
07:10
Chicago O'Hare (ORD) 2

09:56
Buffalo (BUF)
Effective 2025-06-01 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 4440)
Duration: 1:46, non-stop
Canadair CRJ 550 (CR5)
Air Canada AC3943
07:15
Chicago O'Hare (ORD) 1

09:54
Buffalo (BUF)
Effective 2025-06-26 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2038)
Duration: 1:39, non-stop
Airbus A319 (319)
Air Canada AC3943
07:15
Chicago O'Hare (ORD) 2

09:58
Buffalo (BUF)
Effective 2025-06-28 through 2025-08-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 3508)
Duration: 1:43, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3943
07:20
Chicago O'Hare (ORD) 2

10:03
Buffalo (BUF)
Effective 2025-06-29 through 2025-08-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 3508)
Duration: 1:43, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3943
17:20
Las Vegas Harry Reid (LAS) 3

19:08
San Francisco (SFO) 3
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2110)
Duration: 1:48, non-stop
Boeing 737-900 (739)
Air Canada AC3943
18:20
Las Vegas Harry Reid (LAS) 3

20:03
San Francisco (SFO) 3
Valid until 2025-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2110)
Duration: 1:43, non-stop
Boeing 737 MAX 9 (7M9)
Air Canada AC3943
18:20
Las Vegas Harry Reid (LAS) 3

20:03
San Francisco (SFO) 3
Operates only on 2025-05-21
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2110)
Duration: 1:43, non-stop
Boeing 737-900 (739)
Air Canada AC3943
18:28
Las Vegas Harry Reid (LAS) 3

20:10
San Francisco (SFO) 3
Effective 2025-08-19 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2110)
Duration: 1:42, non-stop
Boeing 737 MAX 9 (7M9)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Buffalo (BUF)
  • Las Vegas Harry Reid (LAS) - San Francisco (SFO)
All Air Canada flights
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