Cheapest one-way flights from Boston to Toronto in May from $117

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

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

One-Way flights

29 May Porter Airlines (Canada) Ltd
30 May Porter Airlines (Canada) Ltd
27 May Air Canada direct
25 May Air Canada direct
23 May Porter Airlines (Canada) Ltd
26 May Air Canada direct
24 May Air Canada direct
30 May Air Canada direct
17 May Spirit Airlines
19 May Porter Airlines (Canada) Ltd

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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