Cheapest one-way flights from Boston to Toronto in January from 48€

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

One-Way flights

18 Jan Frontier Airlines
14 Jan Spirit Airlines
22 Jan Spirit Airlines
16 Jan Spirit Airlines
07 Jan Porter Airlines (Canada) Ltd
24 Jan Spirit Airlines
17 Jan Porter Airlines (Canada) Ltd
28 Jan Porter Airlines (Canada) Ltd
31 Jan Porter Airlines (Canada) Ltd
26 Jan Porter Airlines (Canada) Ltd

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

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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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