All airlines flying from Montreal-Trudeau (YUL) to Saint Louis (STL).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 18:10 Montreal-Trudeau (YUL) 20:05 Saint Louis (STL) 1
Air Canada AC 1565 Non-stop Airbus A220-300 (223) 2:55 Effective 2026-05-01 through 2026-06-29
Daily 16:30 Montreal-Trudeau (YUL) 18:17 Saint Louis (STL) 1
Air Canada AC 8687 Non-stop Canadair CRJ 900 (CR9) 2:47 Effective 2026-09-08 through 2026-10-13
Mon,Wed-Sun 16:40 Montreal-Trudeau (YUL) 18:27 Saint Louis (STL) 1
Air Canada AC 8687 Non-stop Canadair CRJ 900 (CR9) 2:47 Effective 2026-07-01 through 2026-09-07
Tue 16:45 Montreal-Trudeau (YUL) 18:32 Saint Louis (STL) 1
Air Canada AC 8687 Non-stop Canadair CRJ 900 (CR9) 2:47 Effective 2026-06-30 through 2026-09-01
Direct Codeshare Flights:
Daily 16:30 Montreal-Trudeau (YUL) 18:17 Saint Louis (STL) 1
United Airlines UA 6645 Non-stop Canadair CRJ 900 (CR9) 2:47 Effective 2026-09-08 through 2026-10-13
Codeshare flight, operated by Air Canada.(AC 8687)
Mon,Wed-Sun 16:40 Montreal-Trudeau (YUL) 18:27 Saint Louis (STL) 1
United Airlines UA 6645 Non-stop Canadair CRJ 900 (CR9) 2:47 Effective 2026-07-01 through 2026-09-07
Codeshare flight, operated by Air Canada.(AC 8687)
Tue 16:45 Montreal-Trudeau (YUL) 18:32 Saint Louis (STL) 1
United Airlines UA 6645 Non-stop Canadair CRJ 900 (CR9) 2:47 Effective 2026-06-30 through 2026-09-01
Codeshare flight, operated by Air Canada.(AC 8687)
Daily 18:10 Montreal-Trudeau (YUL) 20:05 Saint Louis (STL) 1
United Airlines UA 6645 Non-stop Airbus A220-300 (223) 2:55 Effective 2026-05-01 through 2026-06-29
Codeshare flight, operated by Air Canada.(AC 1565)




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All airlines flying from Montreal-Trudeau (YUL) to Saint Louis (STL).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Air Canada AC1565
18:10
Montreal-Trudeau (YUL)

20:05
Saint Louis (STL) 1
Effective 2026-05-01 through 2026-06-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:55, non-stop
Airbus A220-300 (223)
Direct Flights:
Air Canada AC8687
16:30
Montreal-Trudeau (YUL)

18:17
Saint Louis (STL) 1
Effective 2026-09-08 through 2026-10-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:47, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Air Canada AC8687
16:40
Montreal-Trudeau (YUL)

18:27
Saint Louis (STL) 1
Effective 2026-07-01 through 2026-09-07
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 2:47, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Air Canada AC8687
16:45
Montreal-Trudeau (YUL)

18:32
Saint Louis (STL) 1
Effective 2026-06-30 through 2026-09-01
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:47, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA6645
16:30
Montreal-Trudeau (YUL)

18:17
Saint Louis (STL) 1
Effective 2026-09-08 through 2026-10-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 8687)
Duration: 2:47, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA6645
16:40
Montreal-Trudeau (YUL)

18:27
Saint Louis (STL) 1
Effective 2026-07-01 through 2026-09-07
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 8687)
Duration: 2:47, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA6645
16:45
Montreal-Trudeau (YUL)

18:32
Saint Louis (STL) 1
Effective 2026-06-30 through 2026-09-01
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Air Canada. (AC 8687)
Duration: 2:47, non-stop
Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA6645
18:10
Montreal-Trudeau (YUL)

20:05
Saint Louis (STL) 1
Effective 2026-05-01 through 2026-06-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 1565)
Duration: 2:55, non-stop
Airbus A220-300 (223)
  • An international route departing from Montreal-Trudeau airport, Canada (YUL) and arriving at Saint Louis airport, United States (STL).
  • The flight distance is 967 miles, or 1557 km.
  • The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-6 . 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 2:47 and 2:55.
Return (STL-YUL) flights
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