Cheapest one-way flights from Boston to Toronto in May from $169

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

One-Way flights

26 May Porter Airlines (Canada) Ltd direct
08 May Porter Airlines (Canada) Ltd direct
01 May Porter Airlines (Canada) Ltd direct
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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