Cheapest return flights from Porto to Montreal in May from $452

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

Return flights

12 May - 20 May TAP
15 May - 24 May Lufthansa
08 May - 17 May Lufthansa
04 May - 12 May KLM
05 May - 12 May KLM
10 May - 17 May Lufthansa
22 May - 30 May Air Transat direct
05 May - 19 May SWISS
19 May - 26 May SWISS
18 May - 25 May TAP

Also check the deals for one-way flights from Porto 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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