Cheapest one-way flights from Boston to Toronto in May from 100€

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

One-Way flights

07 May Spirit Airlines
11 May Porter Airlines (Canada) Ltd
25 May Porter Airlines (Canada) Ltd direct
10 May Porter Airlines (Canada) Ltd
10 May Air Canada direct
11 May Air Canada direct
07 May Air Canada direct
20 May Porter Airlines (Canada) Ltd direct
21 May Porter Airlines (Canada) Ltd direct
26 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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