Cheapest one-way BOS–YUL flights, September

AirHint found the following cheapest one-way flights from Boston (BOS) to Montreal (YUL) in September 2026 (see full year).

One-Way flights

01 Sep Porter Airlines (Canada) Ltd
01 Sep Porter Airlines (Canada) Ltd direct
03 Sep Porter Airlines (Canada) Ltd
03 Sep Porter Airlines (Canada) Ltd direct
11 Sep Porter Airlines (Canada) Ltd
06 Sep Porter Airlines (Canada) Ltd
08 Sep Porter Airlines (Canada) Ltd
10 Sep Porter Airlines (Canada) Ltd
12 Sep Porter Airlines (Canada) Ltd
14 Sep Porter Airlines (Canada) Ltd

Also check the deals for return flights from Boston to Montreal 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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