Cheapest return flights from Boston to Toronto in May from 198€

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

Return flights

14 May - 17 May Air Canada direct
10 May - 21 May Air Canada direct
04 May - 11 May Porter Airlines (Canada) Ltd
21 May - 25 May Porter Airlines (Canada) Ltd
04 May - 11 May Air Canada direct
20 May - 22 May Porter Airlines (Canada) Ltd direct
21 May - 22 May Porter Airlines (Canada) Ltd direct
24 May - 29 May Porter Airlines (Canada) Ltd direct
24 May - 25 May Porter Airlines (Canada) Ltd direct
25 May - 29 May Porter Airlines (Canada) Ltd direct
25 May - 12 Jun Porter Airlines (Canada) Ltd direct
25 May - 10 Jun Porter Airlines (Canada) Ltd direct
25 May - 13 Jun Porter Airlines (Canada) Ltd direct
25 May - 14 Jun Porter Airlines (Canada) Ltd direct
24 May - 12 Jun Porter Airlines (Canada) Ltd direct
24 May - 10 Jun Porter Airlines (Canada) Ltd direct
24 May - 13 Jun Porter Airlines (Canada) Ltd direct
24 May - 14 Jun Porter Airlines (Canada) Ltd direct
20 May - 01 Jun Porter Airlines (Canada) Ltd
23 May - 12 Jun Porter Airlines (Canada) Ltd direct

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

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