Cheapest return flights from Toronto to Boston in September from $457

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

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

Return flights

15 Sep - 28 Sep Porter Airlines (Canada) Ltd direct
03 Sep - 14 Sep Porter Airlines (Canada) Ltd direct
03 Sep - 13 Sep Porter Airlines (Canada) Ltd direct
12 Sep - 14 Sep Porter Airlines (Canada) Ltd direct
12 Sep - 13 Sep Porter Airlines (Canada) Ltd direct
12 Sep - 28 Sep Porter Airlines (Canada) Ltd direct
01 Sep - 14 Sep Porter Airlines (Canada) Ltd direct
01 Sep - 13 Sep Porter Airlines (Canada) Ltd direct
01 Sep - 01 Sep Porter Airlines (Canada) Ltd direct
21 Sep - 28 Sep Porter Airlines (Canada) Ltd direct
21 Sep - 07 Oct Porter Airlines (Canada) Ltd direct
20 Sep - 07 Oct Porter Airlines (Canada) Ltd direct

Also check the deals for one-way 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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