Cheapest return flights from Montreal to Porto in September from $524

Best time to book flights for Montreal (YUL) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Montreal (YUL) to Porto (OPO) in September 2025 (see full year).

Return flights

02 Sep - 09 Sep Azores Airlines
04 Sep - 11 Sep Azores Airlines
08 Sep - 15 Sep Azores Airlines
01 Sep - 08 Sep Azores Airlines
09 Sep - 16 Sep Azores Airlines
02 Sep - 15 Sep Azores Airlines
04 Sep - 14 Sep Azores Airlines
11 Sep - 03 Oct Azores Airlines
27 Sep - 04 Oct Azores Airlines
22 Sep - 30 Sep Azores Airlines
22 Sep - 29 Sep Azores Airlines
23 Sep - 30 Sep Azores Airlines
29 Sep - 06 Oct Azores Airlines
22 Sep - 06 Oct Azores Airlines
25 Sep - 02 Oct TAP
24 Sep - 01 Oct TAP
28 Sep - 05 Oct TAP
26 Sep - 03 Oct Porter Airlines (Canada) Ltd
30 Sep - 07 Oct Azores Airlines

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

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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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