Cheapest one-way flights from Toronto to Boston in September from $140

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

One-Way flights

30 Sep Porter Airlines (Canada) Ltd direct
22 Sep Porter Airlines (Canada) Ltd direct
23 Sep Porter Airlines (Canada) Ltd direct
24 Sep Porter Airlines (Canada) Ltd direct
26 Sep Porter Airlines (Canada) Ltd direct
25 Sep Porter Airlines (Canada) Ltd direct
19 Sep Porter Airlines (Canada) Ltd direct
18 Sep Porter Airlines (Canada) Ltd direct

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

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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