Cheapest return flights from Boston (BOS) to Montreal (YUL), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
01 Sep 01 Sep Porter Airlines (Canada) Ltd
01 Sep 02 Sep Porter Airlines (Canada) Ltd
02 Sep 02 Sep Porter Airlines (Canada) Ltd
02 Sep 03 Sep Porter Airlines (Canada) Ltd
03 Sep 03 Sep Porter Airlines (Canada) Ltd
01 Sep 02 Sep Porter Airlines (Canada) Ltd
Direct Flight
01 Sep 03 Sep Porter Airlines (Canada) Ltd
Direct Flight
02 Sep 03 Sep Porter Airlines (Canada) Ltd
Direct Flight
02 Sep 24 Sep Porter Airlines (Canada) Ltd
01 Sep 12 Sep Porter Airlines (Canada) Ltd
10 Sep 01 Oct Porter Airlines (Canada) Ltd
12 Sep 01 Oct Porter Airlines (Canada) Ltd
12 Sep 02 Oct Porter Airlines (Canada) Ltd
12 Sep 03 Oct Porter Airlines (Canada) Ltd
14 Sep 01 Oct Porter Airlines (Canada) Ltd
14 Sep 02 Oct Porter Airlines (Canada) Ltd
14 Sep 03 Oct Porter Airlines (Canada) Ltd
14 Sep 04 Oct Porter Airlines (Canada) Ltd
14 Sep 05 Oct Porter Airlines (Canada) Ltd
15 Sep 01 Oct Porter Airlines (Canada) Ltd
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deals for one-way flights from Boston to Montreal in September.

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Updated Jul 3, 2026.

About these fares

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