Cheapest return flights from Porto to Montreal in September from $426

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

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

Return flights

07 Sep - 15 Sep Air Transat direct
11 Sep - 15 Sep Air Canada direct
14 Sep - 22 Sep Lufthansa
15 Sep - 08 Oct SWISS
14 Sep - 22 Sep Air Canada direct
05 Sep - 18 Sep SWISS
05 Sep - 18 Sep Air Transat direct

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

Skyscanner

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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