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

Return flights

21 Oct - 27 Oct	Lufthansa
23 Oct - 28 Oct	Lufthansa
23 Oct - 27 Oct	Lufthansa
09 Oct - 28 Nov	Lufthansa
02 Oct - 28 Nov	SWISS
30 Oct - 04 Nov	Lufthansa
30 Oct - 10 Nov	Lufthansa
25 Oct - 28 Nov	United
09 Oct - 17 Oct	SWISS
08 Oct - 16 Oct	SWISS
25 Oct - 29 Oct	United
21 Oct - 24 Oct	Lufthansa
03 Oct - 07 Oct	Air Canada
20 Oct - 24 Oct	SWISS
06 Oct - 10 Oct	SWISS
11 Oct - 29 Nov	British Airways
11 Oct - 14 Nov	British Airways
11 Oct - 28 Nov	British Airways
11 Oct - 21 Nov	British Airways
03 Oct - 29 Nov	United

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

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 October from $431

Return flights