Cheapest one-way flights from St. Louis to Toronto in March from $98

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

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

One-Way flights

04 Mar Frontier Airlines
05 Mar Frontier Airlines
06 Mar Frontier Airlines
23 Mar Spirit Airlines
28 Mar Frontier Airlines
30 Mar Frontier Airlines
02 Mar Frontier Airlines
22 Mar Air Canada
23 Mar United direct
05 Mar United direct

Also check the deals for return 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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