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

Return flights

06 Oct - 13 Oct	Air Canada
16 Oct - 23 Oct	Air Canada
05 Oct - 16 Oct	Air Transat
13 Oct - 21 Oct	Air Transat
13 Oct - 20 Oct	Air Transat
07 Oct - 13 Oct	Air Transat
04 Oct - 16 Oct	Air Transat
26 Oct - 30 Nov	Air Transat
15 Oct - 22 Oct	Air Transat
08 Oct - 15 Oct	easyJet
31 Oct - 10 Nov	SWISS
01 Oct - 07 Oct	Air Transat
31 Oct - 08 Nov	SWISS
01 Oct - 01 Nov	Air Canada

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 424€

Return flights