United Airlines
flight
UA 8523:
Montreal-Trudeau - Denver
Montreal-Trudeau - Denver
FLIGHT SCHEDULE
Direct Codeshare Flights:
United Airlines UA8523
Effective 2026-09-08 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 1073)
Duration: 4:16, non-stop Airbus A220-300 (223)
Direct Codeshare Flights:
United Airlines UA8523
Effective 2026-05-01 through 2026-06-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 1073)
Duration: 4:24, non-stop Airbus A220-300 (223)
Direct Codeshare Flights:
United Airlines UA8523
Effective 2026-06-18 through 2026-09-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 1073)
Duration: 4:18, non-stop Airbus A220-300 (223)
Direct Codeshare Flights:
United Airlines UA8523
Valid until 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 1073)
Duration: 4:30, non-stop Airbus A220-300 (223)
Direct Codeshare Flights:
United Airlines UA8523
Effective 2026-03-29 through 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 1073)
Duration: 4:20, non-stop Airbus A220-300 (223)
- UA 8523 is an international flight departing from Montreal-Trudeau airport, Canada (YUL) and arriving at Denver airport, United States (DEN).
- The flight distance is 1607 miles, or 2585 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 4:16 and 4:30.