Cheapest one-way flights from Boston to Toronto in May from $121

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

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

One-Way flights

03 May Porter Airlines (Canada) Ltd direct
31 May Porter Airlines (Canada) Ltd direct
12 May Porter Airlines (Canada) Ltd direct
26 May Porter Airlines (Canada) Ltd direct
05 May Porter Airlines (Canada) Ltd direct
30 May Porter Airlines (Canada) Ltd direct
20 May Porter Airlines (Canada) Ltd direct
22 May Porter Airlines (Canada) Ltd
18 May Porter Airlines (Canada) Ltd
22 May Porter Airlines (Canada) Ltd direct

Also check the deals for return 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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