Air Canada
flight
AC 3421:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3421
Effective 2026-02-17 through 2026-03-04
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Codeshare flight, operated by United Airlines.
(UA 379)
Duration: 4:42, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC3421
Effective 2026-03-29 through 2026-04-29
Mon
Tue
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Fri
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Codeshare flight, operated by United Airlines.
(UA 1554)
Duration: 4:32, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air Canada AC3421
Effective 2026-04-30 through 2026-10-24
Mon
Tue
Wed
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Fri
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Sun
Codeshare flight, operated by United Airlines.
(UA 1554)
Duration: 4:20, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC3421
Effective 2026-10-26 through 2026-10-28
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Codeshare flight, operated by United Airlines.
(UA 1695)
Duration: 2:36, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC3421
Effective 2026-03-06 through 2026-03-27
Mon
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Codeshare flight, operated by United Airlines.
(UA 2855)
Duration: 4:21, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC3421
Effective 2026-03-14 through 2026-03-21
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Codeshare flight, operated by United Airlines.
(UA 2855)
Duration: 4:21, 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) - Newark Liberty, New York (EWR)
- Chicago O'Hare (ORD) - Portland (PDX)
- San Francisco (SFO) - Chicago O'Hare (ORD)