Cheapest return flights from Boston to Toronto in May from $202

AirHint found the following cheapest return flights from Boston (BOS) to Toronto (YTZ) in May 2026 (see full year).

Return flights

01 May - 04 May Porter Airlines (Canada) Ltd
23 May - 29 May Porter Airlines (Canada) Ltd direct
04 May - 22 May Porter Airlines (Canada) Ltd
23 May - 06 Jun Porter Airlines (Canada) Ltd
21 May - 24 May Porter Airlines (Canada) Ltd
01 May - 04 May Porter Airlines (Canada) Ltd direct
08 May - 11 May Porter Airlines (Canada) Ltd direct
21 May - 25 May Porter Airlines (Canada) Ltd
14 May - 17 May Porter Airlines (Canada) Ltd
11 May - 26 May Porter Airlines (Canada) Ltd direct
11 May - 11 May Porter Airlines (Canada) Ltd direct
16 May - 04 Jun Porter Airlines (Canada) Ltd direct
16 May - 03 Jun Porter Airlines (Canada) Ltd direct
11 May - 01 Jun Porter Airlines (Canada) Ltd direct
25 May - 04 Jun Porter Airlines (Canada) Ltd direct
25 May - 10 Jun Porter Airlines (Canada) Ltd direct
25 May - 03 Jun Porter Airlines (Canada) Ltd direct
27 May - 04 Jun Porter Airlines (Canada) Ltd direct
27 May - 10 Jun Porter Airlines (Canada) Ltd direct
27 May - 03 Jun Porter Airlines (Canada) Ltd direct

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

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