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 $257 for one-way flights and CA $433 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep. 8 - Mon, Sep. 15
YUL
Montreal
STL
St. Louis
CA $433 Roundtrip, just found
CA $433
Roundtrip
just found

Wed, Jan. 7 - Sat, Jan. 10
YUL
Montreal
STL
St. Louis
CA $434 Roundtrip, found 2 hours ago
CA $434
Roundtrip
found 2 hours ago

Sat, Sep. 13 - Sat, Sep. 20
YUL
Montreal
STL
St. Louis
CA $513 Roundtrip, found 21 hours ago
CA $513
Roundtrip
found 21 hours ago

Wed, Aug. 27 - Mon, Sep. 1
YUL
Montreal
STL
St. Louis
CA $540 Roundtrip, found 3 days ago
CA $540
Roundtrip
found 3 days ago

Mon, Sep. 8 - Mon, Sep. 15
YUL
Montreal
STL
St. Louis
CA $659 Roundtrip, just found
CA $659
Roundtrip
just found

Thu, Sep. 25 - Mon, Sep. 29
YUL
Montreal
STL
St. Louis
CA $796 Roundtrip, found 1 day ago
CA $796
Roundtrip
found 1 day ago
Nearby Cities
Top Routes to Southern Illinois
- Ottawa to Southern Illinois
- Calgary to Southern Illinois
- Detroit to Southern Illinois
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- Seattle to Southern Illinois
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- Edmonton to Southern Illinois
- Toronto to Southern Illinois
- Hamilton to Southern Illinois
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