Photo by Southernmost Illinois Tourism Bureau

Popular airlines from Montreal to Southern Illinois
Air Canada
WestJet
Flair Airlines
American Airlines
United
Delta
Porter Airlines
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Cheap flights from Montreal (YMQ) to Southern Illinois (STL)
Prices were available within the past 7 days and start at CA $321 for one-way flights and CA $434 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov. 6 - Mon, Nov. 10
YUL
Montreal
STL
St. Louis
CA $434 Roundtrip, found 14 hours ago
CA $434
Roundtrip
found 14 hours ago

Tue, Sep. 2 - Fri, Sep. 5
YUL
Montreal
STL
St. Louis
CA $489 Roundtrip, found 8 hours ago
CA $489
Roundtrip
found 8 hours ago

Sat, Sep. 13 - Sat, Sep. 20
YUL
Montreal
STL
St. Louis
CA $513 Roundtrip, found 2 hours ago
CA $513
Roundtrip
found 2 hours ago

Wed, Aug. 27 - Mon, Sep. 1
YUL
Montreal
STL
St. Louis
CA $540 Roundtrip, found 2 days ago
CA $540
Roundtrip
found 2 days ago

Sat, Oct. 4 - Sat, Oct. 11
YUL
Montreal
STL
St. Louis
CA $660 Roundtrip, found 2 hours ago
CA $660
Roundtrip
found 2 hours ago

Thu, Sep. 25 - Mon, Sep. 29
YUL
Montreal
STL
St. Louis
CA $796 Roundtrip, found 7 hours ago
CA $796
Roundtrip
found 7 hours ago
Nearby Cities
Top Routes to Southern Illinois
- Ottawa to Southern Illinois
- Calgary to Southern Illinois
- Detroit to Southern Illinois
- Winnipeg to Southern Illinois
- Québec City to Southern Illinois
- Seattle to Southern Illinois
- Montreal to Southern Illinois
- Buffalo to Southern Illinois
- Vancouver to Southern Illinois
- Kitchener to Southern Illinois
- Orlando to Southern Illinois
- Edmonton to Southern Illinois
- Toronto to Southern Illinois
- Hamilton to Southern Illinois
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