Cheapest return flights from St. Louis to Toronto in April from 352€

AirHint found the following cheapest return flights from St. Louis (STL) to Toronto (YYZ) in April 2026 (see full year).

Return flights

08 Apr - 15 Apr Frontier Airlines
08 Apr - 15 Apr Air Canada direct

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

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