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

Return flights

22 Oct - 27 Oct	Air Canada
29 Oct - 16 Nov	Air France
01 Oct - 08 Oct	Air France
08 Oct - 15 Oct	Air France
25 Oct - 31 Oct	SWISS
01 Oct - 01 Nov	SWISS
29 Oct - 02 Nov	Air France
28 Oct - 02 Nov	Lufthansa
17 Oct - 03 Nov	Air Transat
15 Oct - 18 Oct	Air Transat
20 Oct - 24 Oct	Air Transat
06 Oct - 09 Oct	Lufthansa
06 Oct - 09 Oct	Air Transat	direct
06 Oct - 11 Oct	SWISS
08 Oct - 15 Oct	TAP	direct
17 Oct - 03 Nov	TAP	direct
28 Oct - 02 Nov	TAP	direct
29 Oct - 02 Nov	TAP	direct
29 Oct - 16 Nov	TAP	direct
01 Oct - 01 Nov	TAP	direct

Also check the deals for one-way flights from Lisbon 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 Lisbon to Toronto in October from $422

Return flights