Cheapest return flights from Boston to Toronto in May from $274

Best time to book flights for Boston (BOS) to Toronto (YTZ) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Toronto (YTZ) in May 2025 (see full year).

Return flights

24 May - 26 May Porter Airlines (Canada) Ltd direct
23 May - 27 May Porter Airlines (Canada) Ltd direct
05 May - 07 May Porter Airlines (Canada) Ltd direct
05 May - 19 May Porter Airlines (Canada) Ltd direct
05 May - 12 May Porter Airlines (Canada) Ltd direct
05 May - 09 May Porter Airlines (Canada) Ltd direct
05 May - 08 May Porter Airlines (Canada) Ltd direct
05 May - 11 May Porter Airlines (Canada) Ltd direct
05 May - 26 May Porter Airlines (Canada) Ltd direct
05 May - 24 May Porter Airlines (Canada) Ltd direct
30 May - 12 Jun Porter Airlines (Canada) Ltd direct
30 May - 05 Jun Porter Airlines (Canada) Ltd direct
30 May - 03 Jun Porter Airlines (Canada) Ltd direct
30 May - 10 Jun Porter Airlines (Canada) Ltd direct
30 May - 11 Jun Porter Airlines (Canada) Ltd direct
21 May - 05 Jun Porter Airlines (Canada) Ltd direct
21 May - 03 Jun Porter Airlines (Canada) Ltd direct
21 May - 10 Jun Porter Airlines (Canada) Ltd direct
21 May - 11 Jun Porter Airlines (Canada) Ltd direct
27 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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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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