Cheap flights from Montreal to Southern Illinois from CA $321

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

Select American Airlines flight, departing Thu, Nov. 6 from Montreal to St. Louis, returning Mon, Nov. 10, priced at CA $434 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

Select American Airlines flight, departing Tue, Sep. 2 from Montreal to St. Louis, returning Fri, Sep. 5, priced at CA $489 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

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

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

Select Air Canada flight, departing Sat, Oct. 4 from Montreal to St. Louis, returning Sat, Oct. 11, priced at CA $660 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

Select WestJet flight, departing Thu, Sep. 25 from Montreal to St. Louis, returning Mon, Sep. 29, priced at CA $796 found 7 hours ago