Air Canada
flight
AC 4129:
Multiple routes
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4129
Operates only on 2026-05-12
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Codeshare flight, operated by United Airlines.
(UA 1671)
Duration: 2:43, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC4129
Effective 2026-04-30 through 2026-05-11
Mon
Tue
Wed
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Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:43, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4129
Effective 2026-05-13 through 2026-05-17
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Wed
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Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:43, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC4129
Effective 2026-05-18 through 2026-05-20
Mon
Tue
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Codeshare flight, operated by United Airlines.
(UA 1596)
Duration: 2:53, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC4129
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2437)
Duration: 1:49, non-stop Boeing 737-800 (738)
This flight number is listed as serving the following routes:
- Chicago O'Hare (ORD) - Washington Dulles (IAD)
- San Francisco (SFO) - Denver (DEN)