Cheapest return flights from Philadelphia to Toronto in May from $305

AirHint found the following cheapest return flights from Philadelphia (PHL) to Toronto (YYZ) in May 2026 (see full year).

Return flights

16 May - 18 May Spirit Airlines
19 May - 23 May Frontier Airlines
05 May - 10 May Spirit Airlines
23 May - 26 May American Airlines
29 May - 31 May Spirit Airlines
23 May - 25 May Spirit Airlines
23 May - 26 May Porter Airlines (Canada) Ltd direct
23 May - 25 May Porter Airlines (Canada) Ltd direct
29 May - 31 May Porter Airlines (Canada) Ltd direct
16 May - 18 May Porter Airlines (Canada) Ltd direct
16 May - 11 Jun Air Canada direct

Also check the deals for one-way flights from Philadelphia to Toronto in May.

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