Cheapest one-way flights from Boston to Toronto in May from $189

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

One-Way flights

01 May Porter Airlines (Canada) Ltd
01 May Porter Airlines (Canada) Ltd direct
02 May Air Canada

Also check the deals for return flights from Boston to Toronto in May.

Skyscanner

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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