Cheap flights from Montreal to Southern Illinois from CA $257

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

Select American Airlines flight, departing Mon, Sep. 8 from Montreal to St. Louis, returning Mon, Sep. 15, priced at CA $433 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

Select American Airlines flight, departing Wed, Jan. 7 from Montreal to St. Louis, returning Sat, Jan. 10, priced at CA $434 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

Select Delta flight, departing Sat, Sep. 13 from Montreal to St. Louis, returning Sat, Sep. 20, priced at CA $513 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

Select United flight, departing Wed, Aug. 27 from Montreal to St. Louis, returning Mon, Sep. 1, priced at CA $540 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

Select Air Canada flight, departing Mon, Sep. 8 from Montreal to St. Louis, returning Mon, Sep. 15, priced at CA $659 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

Select WestJet flight, departing Thu, Sep. 25 from Montreal to St. Louis, returning Mon, Sep. 29, priced at CA $796 found 1 day ago