Cheapest return flights from Boston to Montreal in May from $383

AirHint found the following cheapest return flights from Boston (BOS) to Montreal (YUL) in May 2026 (see full year).

Return flights

02 May - 05 May Porter Airlines (Canada) Ltd
02 May - 11 May Porter Airlines (Canada) Ltd
02 May - 13 May Porter Airlines (Canada) Ltd
02 May - 15 May Porter Airlines (Canada) Ltd
02 May - 21 May Porter Airlines (Canada) Ltd
02 May - 23 May Porter Airlines (Canada) Ltd
02 May - 04 May Porter Airlines (Canada) Ltd
02 May - 06 May Porter Airlines (Canada) Ltd
02 May - 08 May Porter Airlines (Canada) Ltd
02 May - 12 May Porter Airlines (Canada) Ltd
12 May - 02 Jun Porter Airlines (Canada) Ltd
12 May - 01 Jun Porter Airlines (Canada) Ltd
16 May - 02 Jun Porter Airlines (Canada) Ltd
16 May - 04 Jun Porter Airlines (Canada) Ltd
16 May - 06 Jun Porter Airlines (Canada) Ltd
16 May - 01 Jun Porter Airlines (Canada) Ltd
16 May - 03 Jun Porter Airlines (Canada) Ltd
16 May - 05 Jun Porter Airlines (Canada) Ltd
18 May - 02 Jun Porter Airlines (Canada) Ltd
18 May - 04 Jun Porter Airlines (Canada) Ltd

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

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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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