Cheapest one-way flights from Boston to Toronto in May from $98

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

One-Way flights

04 May Porter Airlines (Canada) Ltd
11 May Porter Airlines (Canada) Ltd direct
05 May Porter Airlines (Canada) Ltd direct
04 May Porter Airlines (Canada) Ltd direct
08 May Porter Airlines (Canada) Ltd direct
16 May Porter Airlines (Canada) Ltd direct
06 May Porter Airlines (Canada) Ltd direct
02 May Porter Airlines (Canada) Ltd direct
21 May Porter Airlines (Canada) Ltd
10 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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