Air Canada
flight
AC 4666:
Madison - Denver
Madison - Denver
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4666
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1784)
Duration: 2:46, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective from 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2338)
Duration: 2:30, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1910)
Duration: 2:44, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2338)
Duration: 2:37, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-01-06 through 2026-01-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 377)
Duration: 2:47, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-01-15 through 2026-01-21
Mon
Tue
-
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 377)
Duration: 2:47, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-01-20 through 2026-02-10
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 377)
Duration: 2:48, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-01-23 through 2026-02-01
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 377)
Duration: 2:47, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-02-02 through 2026-02-11
Mon
Tue
-
-
Wed
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 377)
Duration: 2:47, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Operates only on 2026-02-05
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 377)
Duration: 2:47, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 2736)
Duration: 2:44, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC4666
Effective 2026-02-14 through 2026-02-28
Mon
-
-
Tue
-
-
Wed
-
-
Thu
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-
Fri
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-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2736)
Duration: 2:45, non-stop Airbus A320 (320)
- AC 4666 is a domestic flight departing from the Madison airport (MSN) and arriving at Denver airport (DEN).
- The flight distance is 823 miles, or 1324 km.
- The timezone of the departure airport is UTC-6 , and the timezone of the arrival airport is UTC-7 . 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 2:30 and 2:48.