Air Canada flight AC 3643: Ronald Reagan Washington - Denver

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 16:07 Ronald Reagan Washington (DCA) 2 18:24 Denver (DEN)
AC 3643 Non-stop Airbus A321neo (32Q) 4:17 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:07 Ronald Reagan Washington (DCA) 2 18:07 Denver (DEN)
AC 3643 Non-stop Airbus A321neo (32Q) 4:00 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:07 Ronald Reagan Washington (DCA) 2 18:07 Denver (DEN)
AC 3643 Non-stop Boeing 757-300 (753) 4:00 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:11 Ronald Reagan Washington (DCA) 2 18:25 Denver (DEN)
AC 3643 Non-stop Airbus A321neo (32Q) 4:14 Effective 2026-01-06 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 746)
Mon-Fri,Sun 16:11 Ronald Reagan Washington (DCA) 2 18:29 Denver (DEN)
AC 3643 Non-stop Airbus A321neo (32Q) 4:18 Effective 2026-02-12 through 2026-02-27
Codeshare flight, operated by United Airlines.(UA 746)
Sat 16:11 Ronald Reagan Washington (DCA) 2 18:29 Denver (DEN)
AC 3643 Non-stop Boeing 737 MAX 8 (7M8) 4:18 Effective 2026-02-14 through 2026-02-21
Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:11 Ronald Reagan Washington (DCA) 2 18:29 Denver (DEN)
AC 3643 Non-stop Airbus A321neo (32Q) 4:18 Effective 2026-02-28 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:17 Ronald Reagan Washington (DCA) 2 18:25 Denver (DEN)
AC 3643 Non-stop Boeing 757-300 (753) 4:08 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 746)


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Air Canada flight AC 3643:
Ronald Reagan Washington - Denver
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3643
16:07
Ronald Reagan Washington (DCA) 2

18:24
Denver (DEN)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:17, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC3643
16:07
Ronald Reagan Washington (DCA) 2

18:07
Denver (DEN)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:00, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC3643
16:07
Ronald Reagan Washington (DCA) 2

18:07
Denver (DEN)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:00, non-stop
Boeing 757-300 (753)
Direct Codeshare Flights:
Air Canada AC3643
16:11
Ronald Reagan Washington (DCA) 2

18:25
Denver (DEN)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:14, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC3643
16:11
Ronald Reagan Washington (DCA) 2

18:29
Denver (DEN)
Effective 2026-02-12 through 2026-02-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:18, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC3643
16:11
Ronald Reagan Washington (DCA) 2

18:29
Denver (DEN)
Effective 2026-02-14 through 2026-02-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:18, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC3643
16:11
Ronald Reagan Washington (DCA) 2

18:29
Denver (DEN)
Effective 2026-02-28 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:18, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC3643
16:17
Ronald Reagan Washington (DCA) 2

18:25
Denver (DEN)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 746)
Duration: 4:08, non-stop
Boeing 757-300 (753)
  • AC 3643 is a domestic flight departing from the Ronald Reagan Washington airport (DCA) and arriving at Denver airport (DEN).
  • The flight distance is 1471 miles, or 2368 km.
  • The timezone of the departure airport is UTC-5 , 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 4:00 and 4:18.
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