Cheapest return flights from Boston to Montreal in December from $322

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

Return flights

06 Dec - 11 Dec Porter Airlines (Canada) Ltd
05 Dec - 11 Dec Porter Airlines (Canada) Ltd
09 Dec - 11 Dec Porter Airlines (Canada) Ltd
11 Dec - 11 Dec Porter Airlines (Canada) Ltd
04 Dec - 11 Dec Porter Airlines (Canada) Ltd
08 Dec - 11 Dec Porter Airlines (Canada) Ltd
10 Dec - 11 Dec Porter Airlines (Canada) Ltd
03 Dec - 11 Dec Porter Airlines (Canada) Ltd
02 Dec - 11 Dec Porter Airlines (Canada) Ltd
06 Dec - 08 Dec Porter Airlines (Canada) Ltd
29 Dec - 02 Jan Air Canada direct
12 Dec - 01 Jan Porter Airlines (Canada) Ltd
13 Dec - 01 Jan Porter Airlines (Canada) Ltd
13 Dec - 03 Jan Porter Airlines (Canada) Ltd
15 Dec - 01 Jan Porter Airlines (Canada) Ltd
15 Dec - 03 Jan Porter Airlines (Canada) Ltd
23 Dec - 01 Jan Porter Airlines (Canada) Ltd
23 Dec - 03 Jan Porter Airlines (Canada) Ltd
23 Dec - 07 Jan Porter Airlines (Canada) Ltd
23 Dec - 09 Jan Porter Airlines (Canada) Ltd

Also check the deals for one-way 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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