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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
21 Oct 18 Nov Frontier Airlines
15 Oct 19 Oct American Airlines
23 Oct 29 Oct Frontier Airlines
08 Oct 13 Oct Frontier Airlines
10 Oct 17 Oct Frontier Airlines
09 Oct 11 Oct Alaska Airlines
10 Oct 17 Oct Air Canada
Direct Flight
23 Oct 29 Oct Air Canada
Direct Flight
15 Oct 19 Oct Air Canada
Direct Flight
09 Oct 11 Oct Air Canada
Direct Flight
21 Oct 18 Nov Air Canada
Direct Flight
08 Oct 13 Oct United
Direct Flight
Powered by

deals for one-way flights from St. Louis to Toronto in October.

Book a cheap hotel in Toronto

Cheap car rent in Lester B Pearson Intl

Updated Aug 27, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

Feel free to contact us with any feedback or request another flight research.