Flights from St. Louis to Barrie - Orillia

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$369 Roundtrip, found 1 day ago

$369

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $369 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$378 Roundtrip, found 1 day ago

$378

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $378 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$389 Roundtrip, found 1 day ago

$389

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $389 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$435 Roundtrip, found 1 day ago

$435

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $435 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$437 Roundtrip, found 1 day ago

$437

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $437 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$438 Roundtrip, found 1 day ago

$438

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $438 found 1 day ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$439 Roundtrip, found 4 hours ago

$439

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $439 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$442 Roundtrip, found 4 hours ago

$442

Roundtrip

found 4 hours ago

Select Air Canada flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $442 found 4 hours ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$443 Roundtrip, found 1 day ago

$443

Roundtrip

found 1 day ago

Select Air Canada flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $443 found 1 day ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$446 Roundtrip, found 4 hours ago

$446

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $446 found 4 hours ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$448 Roundtrip, found 1 day ago

$448

Roundtrip

found 1 day ago

Select Air Canada flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $448 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$449 Roundtrip, found 1 day ago

$449

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $449 found 1 day ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$451 Roundtrip, found 4 hours ago

$451

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $451 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$460 Roundtrip, found 4 hours ago

$460

Roundtrip

found 4 hours ago

Select Air Canada flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $460 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$461 Roundtrip, found 4 hours ago

$461

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $461 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$463 Roundtrip, found 4 hours ago

$463

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $463 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$470 Roundtrip, found 4 hours ago

$470

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $470 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$476 Roundtrip, found 4 hours ago

$476

Roundtrip

found 4 hours ago

Select Air Canada flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $476 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$534 Roundtrip, found 4 hours ago

$534

Roundtrip

found 4 hours ago

Select Delta flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $534 found 4 hours ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$654 Roundtrip, found 4 hours ago

$654

Roundtrip

found 4 hours ago

Select WestJet flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $654 found 4 hours ago