Cheapest return flights from St. Louis to Toronto in March from $238

Best time to book flights for St. Louis (STL) to Toronto (YYZ) flights at AirHint

AirHint found the following cheapest return flights from St. Louis (STL) to Toronto (YYZ) in March 2025 (see full year).

Return flights

26 Mar - 01 Apr Frontier Airlines
25 Mar - 01 Apr Frontier Airlines
22 Mar - 28 Mar Frontier Airlines
15 Mar - 22 Mar Southern Airways Express
16 Mar - 23 Mar Frontier Airlines
15 Mar - 15 Mar American Airlines
16 Mar - 23 Mar Air Canada direct
15 Mar - 22 Mar Air Canada direct

Also check the deals for one-way flights from St. Louis to Toronto in March.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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