Cheapest return flights from Boston to Montreal in October from $314

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

Return flights

27 Oct - 30 Oct Porter Airlines (Canada) Ltd
26 Oct - 28 Oct Porter Airlines (Canada) Ltd
30 Oct - 02 Nov Porter Airlines (Canada) Ltd
17 Oct - 18 Oct Air Canada direct
26 Oct - 01 Nov Porter Airlines (Canada) Ltd
26 Oct - 15 Nov Porter Airlines (Canada) Ltd
26 Oct - 13 Nov Porter Airlines (Canada) Ltd
29 Oct - 01 Nov Porter Airlines (Canada) Ltd
29 Oct - 15 Nov Porter Airlines (Canada) Ltd
29 Oct - 13 Nov Porter Airlines (Canada) Ltd
31 Oct - 01 Nov Porter Airlines (Canada) Ltd
31 Oct - 15 Nov Porter Airlines (Canada) Ltd
31 Oct - 13 Nov Porter Airlines (Canada) Ltd
26 Oct - 27 Oct Porter Airlines (Canada) Ltd
26 Oct - 29 Oct Porter Airlines (Canada) Ltd
26 Oct - 31 Oct Porter Airlines (Canada) Ltd
29 Oct - 29 Oct Porter Airlines (Canada) Ltd
29 Oct - 31 Oct Porter Airlines (Canada) Ltd
29 Oct - 30 Oct Porter Airlines (Canada) Ltd
31 Oct - 31 Oct Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Boston to Montreal in October.

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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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