Cheapest one-way flights from Boston to Montreal in December from $135

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

One-Way flights

06 Dec Porter Airlines (Canada) Ltd
05 Dec Porter Airlines (Canada) Ltd
09 Dec Porter Airlines (Canada) Ltd
11 Dec Porter Airlines (Canada) Ltd
04 Dec Porter Airlines (Canada) Ltd
08 Dec Porter Airlines (Canada) Ltd
10 Dec Porter Airlines (Canada) Ltd
12 Dec Porter Airlines (Canada) Ltd
03 Dec Porter Airlines (Canada) Ltd
02 Dec Porter Airlines (Canada) Ltd

Also check the deals for return flights from Boston to Montreal in December.

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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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