Cheapest return flights from St. Louis (STL) to Toronto (YYZ), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
24 Aug 31 Aug Frontier Airlines
27 Aug 03 Sep American Airlines
07 Aug 16 Aug Frontier Airlines
26 Aug 31 Aug Southern Airways Express
06 Aug 10 Aug Frontier Airlines
10 Aug 18 Aug Frontier Airlines
07 Aug 10 Aug Frontier Airlines
24 Aug 31 Aug Air Canada
Direct Flight
27 Aug 03 Sep Air Canada
Direct Flight
21 Aug 24 Aug Frontier Airlines
26 Aug 31 Aug Air Canada
Direct Flight
10 Aug 18 Aug Air Canada
Direct Flight
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deals for one-way flights from St. Louis to Toronto in August.

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Updated Jul 13, 2026.

About these fares

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