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

Return flights

29 Oct - 04 Nov	Lufthansa
29 Oct - 03 Nov	Lufthansa
17 Oct - 25 Oct	SWISS
14 Oct - 22 Oct	Air Canada
04 Oct - 10 Oct	Lufthansa
11 Oct - 18 Oct	SWISS
19 Oct - 26 Oct	Lufthansa
30 Oct - 05 Nov	Air Canada
30 Oct - 07 Nov	Air Canada
18 Oct - 25 Oct	Air Canada
03 Oct - 09 Oct	Air Canada
04 Oct - 11 Oct	Lufthansa
25 Oct - 02 Nov	United
26 Oct - 31 Oct	Air Transat	direct
30 Oct - 05 Nov	Air Transat	direct
30 Oct - 07 Nov	Air Transat	direct
06 Oct - 09 Oct	Air Canada
25 Oct - 01 Nov	British Airways

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 368€

Return flights