Cheapest return BOS–YUL flights, September

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

Return flights

02 Sep - 02 Sep Porter Airlines (Canada) Ltd
01 Sep - 01 Sep Porter Airlines (Canada) Ltd
01 Sep - 02 Sep Porter Airlines (Canada) Ltd
01 Sep - 02 Sep Porter Airlines (Canada) Ltd direct
02 Sep - 03 Sep Porter Airlines (Canada) Ltd
01 Sep - 03 Sep Porter Airlines (Canada) Ltd
02 Sep - 03 Sep Porter Airlines (Canada) Ltd direct
01 Sep - 03 Sep Porter Airlines (Canada) Ltd direct
02 Sep - 05 Sep Porter Airlines (Canada) Ltd
02 Sep - 09 Sep Porter Airlines (Canada) Ltd
14 Sep - 04 Oct Porter Airlines (Canada) Ltd
16 Sep - 04 Oct Porter Airlines (Canada) Ltd
18 Sep - 04 Oct Porter Airlines (Canada) Ltd
20 Sep - 04 Oct Porter Airlines (Canada) Ltd
22 Sep - 04 Oct Porter Airlines (Canada) Ltd
24 Sep - 04 Oct Porter Airlines (Canada) Ltd
26 Sep - 04 Oct Porter Airlines (Canada) Ltd
28 Sep - 04 Oct Porter Airlines (Canada) Ltd
30 Sep - 04 Oct Porter Airlines (Canada) Ltd
11 Sep - 01 Oct Porter Airlines (Canada) Ltd

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

Powered by

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.

Book a cheap hotel in Montreal

Cheap car rent in Montreal

Feel free to contact us with any feedback or request another flight research.