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

Return flights

23 Jul - 28 Jul	Lufthansa
17 Jul - 23 Jul	Lufthansa
16 Jul - 23 Jul	Lufthansa
10 Jul - 16 Jul	Air Canada	direct
14 Jul - 20 Jul	Air Canada
14 Jul - 21 Jul	Air Canada
15 Jul - 21 Jul	Air France
15 Jul - 22 Jul	Air France
10 Jul - 17 Jul	Air France
13 Jul - 21 Jul	Air Canada
28 Jul - 04 Aug	United
30 Jul - 06 Aug	United
20 Jul - 01 Aug	Air Canada
29 Jul - 05 Aug	Lufthansa
27 Jul - 03 Aug	United
31 Jul - 07 Aug	Air Canada
26 Jul - 02 Aug	United

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

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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Cheapest return flights from Porto to Montreal in July from 455€

Return flights