Cheapest return flights from Porto to Toronto in September from $437

Best time to book flights for Porto (OPO) to Toronto (YYZ) flights at AirHint

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

Return flights

21 Sep - 28 Sep Air Canada
22 Sep - 29 Sep Lufthansa
08 Sep - 29 Sep SWISS
09 Sep - 30 Sep Air Transat
22 Sep - 28 Sep SWISS
26 Sep - 10 Oct SWISS
04 Sep - 11 Sep SWISS
12 Sep - 14 Sep SWISS
04 Sep - 11 Sep Air Transat direct
22 Sep - 28 Sep Air Transat direct
22 Sep - 29 Sep Air Transat direct

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