Cheapest return flights from Toronto to Boston in September from $236

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

Return flights

30 Sep - 01 Oct Porter Airlines (Canada) Ltd
30 Sep - 02 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 21 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 20 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 14 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 12 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 15 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 18 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 16 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 11 Oct Porter Airlines (Canada) Ltd direct
30 Sep - 30 Sep Porter Airlines (Canada) Ltd direct
27 Sep - 29 Sep Porter Airlines (Canada) Ltd direct
27 Sep - 30 Sep Porter Airlines (Canada) Ltd direct
26 Sep - 30 Sep Porter Airlines (Canada) Ltd direct
27 Sep - 28 Sep Porter Airlines (Canada) Ltd direct
29 Sep - 30 Sep Porter Airlines (Canada) Ltd direct
25 Sep - 26 Sep Porter Airlines (Canada) Ltd direct
26 Sep - 29 Sep Porter Airlines (Canada) Ltd direct
25 Sep - 29 Sep Porter Airlines (Canada) Ltd
26 Sep - 27 Sep Porter Airlines (Canada) Ltd direct

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

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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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