Cheapest one-way flights from Boston to Montreal in September from $230

Best time to book flights for Boston (BOS) to Montreal (YUL) flights at AirHint

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

One-Way flights

01 Sep Porter Airlines (Canada) Ltd
03 Sep Porter Airlines (Canada) Ltd
05 Sep Porter Airlines (Canada) Ltd
07 Sep Porter Airlines (Canada) Ltd
09 Sep Porter Airlines (Canada) Ltd
11 Sep Porter Airlines (Canada) Ltd
14 Sep Porter Airlines (Canada) Ltd
15 Sep Porter Airlines (Canada) Ltd
16 Sep Porter Airlines (Canada) Ltd
17 Sep Porter Airlines (Canada) Ltd

Also check the deals for return flights from Boston to Montreal 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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