AirHint found the following cheapest return flights from Porto (OPO) to Toronto (YYZ) in August 2025 (see full year).

Return flights

28 Aug - 07 Sep	Lufthansa
28 Aug - 01 Sep	Air Canada
28 Aug - 31 Aug	Lufthansa
28 Aug - 02 Sep	Air Canada
29 Aug - 03 Sep	Lufthansa
26 Aug - 02 Sep	United
27 Aug - 02 Sep	SWISS
21 Aug - 04 Sep	Lufthansa
29 Aug - 01 Sep	Lufthansa
29 Aug - 02 Sep	Air Canada
19 Aug - 27 Aug	Air Canada
14 Aug - 27 Aug	Air Canada
30 Aug - 02 Sep	Lufthansa
21 Aug - 29 Aug	Air Canada
27 Aug - 31 Aug	Air Canada
22 Aug - 29 Aug	Air Canada
18 Aug - 30 Aug	Air Canada
14 Aug - 17 Aug	Air Canada
15 Aug - 20 Aug	United
09 Aug - 18 Aug	Air Transat

Also check the deals for one-way flights from Porto to Toronto in August.

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 Toronto in August from $479

Return flights