Flights from St. Louis to Hamilton

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.

Wed, Sep 17 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$346 Roundtrip, found 1 day ago

$346

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 17 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $346 found 1 day ago

Wed, Sep 17 - Sat, Sep 20

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$376 Roundtrip, found 1 day ago

$376

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Sep 17 from Lambert-St. Louis Intl. to Pearson Intl., returning Sat, Sep 20, priced at $376 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$399 Roundtrip, found 1 day ago

$399

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 $399 found 1 day ago

Fri, Sep 19 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$413 Roundtrip, found 1 day ago

$413

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Sep 19 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $413 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$420 Roundtrip, found 1 day ago

$420

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 $420 found 1 day ago

Tue, Sep 23 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$433 Roundtrip, found 1 day ago

$433

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $433 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$439 Roundtrip, found 1 day ago

$439

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 $439 found 1 day ago

Fri, Sep 19 - Sat, Sep 20

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$443 Roundtrip, found 1 day ago

$443

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Sep 19 from Lambert-St. Louis Intl. to Pearson Intl., returning Sat, Sep 20, priced at $443 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$444 Roundtrip, found 1 day ago

$444

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 $444 found 1 day 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 Delta 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.

$450 Roundtrip, found 1 day ago

$450

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 $450 found 1 day ago

Sat, Sep 20 - Sat, Sep 20

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$463 Roundtrip, found 1 day ago

$463

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Sat, Sep 20, priced at $463 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$472 Roundtrip, found 1 day ago

$472

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 $472 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YKF

Region of Waterloo Intl.

$542 Roundtrip, found 1 day ago

$542

Roundtrip

found 1 day ago

Select Air Canada flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Region of Waterloo Intl., returning Tue, Sep 23, priced at $542 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YHM

John C. Munro Hamilton Intl.

$542 Roundtrip, found 1 day ago

$542

Roundtrip

found 1 day ago

Select Air Canada flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to John C. Munro Hamilton Intl., returning Tue, Sep 23, priced at $542 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$544 Roundtrip, found 1 day ago

$544

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 $544 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YTZ

Billy Bishop Toronto City

$548 Roundtrip, found 1 day ago

$548

Roundtrip

found 1 day ago

Select Air Canada flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Billy Bishop Toronto City, returning Tue, Sep 23, priced at $548 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$565 Roundtrip, found 1 day ago

$565

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 $565 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$569 Roundtrip, found 1 day ago

$569

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 $569 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

STL

Lambert-St. Louis Intl.

YYZ

Pearson Intl.

$679 Roundtrip, found 1 day ago

$679

Roundtrip

found 1 day ago

Select WestJet flight, departing Sat, Sep 20 from Lambert-St. Louis Intl. to Pearson Intl., returning Tue, Sep 23, priced at $679 found 1 day ago