Cheapest return flights from Boston to Toronto in September from $206

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

Return flights

04 Sep - 08 Sep Porter Airlines (Canada) Ltd
22 Sep - 30 Sep Porter Airlines (Canada) Ltd
16 Sep - 27 Sep Porter Airlines (Canada) Ltd
12 Sep - 16 Sep Porter Airlines (Canada) Ltd
04 Sep - 07 Sep Porter Airlines (Canada) Ltd
10 Sep - 12 Sep Porter Airlines (Canada) Ltd direct
24 Sep - 25 Sep Porter Airlines (Canada) Ltd
05 Sep - 07 Sep Porter Airlines (Canada) Ltd
18 Sep - 21 Sep Porter Airlines (Canada) Ltd
15 Sep - 18 Sep Porter Airlines (Canada) Ltd
17 Sep - 01 Oct Porter Airlines (Canada) Ltd direct
23 Sep - 01 Oct Porter Airlines (Canada) Ltd direct
27 Sep - 01 Oct Porter Airlines (Canada) Ltd direct
27 Sep - 17 Oct Porter Airlines (Canada) Ltd direct
25 Sep - 01 Oct Porter Airlines (Canada) Ltd
22 Sep - 01 Oct Porter Airlines (Canada) Ltd
23 Sep - 05 Oct Porter Airlines (Canada) Ltd direct
27 Sep - 05 Oct Porter Airlines (Canada) Ltd direct
17 Sep - 05 Oct Porter Airlines (Canada) Ltd direct
25 Sep - 05 Oct Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Boston to Toronto 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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