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

Return flights

21 Oct - 15 Nov	Iberia
22 Oct - 15 Nov	Iberia
07 Oct - 16 Oct	Iberia
23 Oct - 03 Nov	Iberia
23 Oct - 15 Nov	Iberia
22 Oct - 09 Nov	Iberia
14 Oct - 09 Nov	Iberia
29 Oct - 22 Nov	Iberia
20 Oct - 15 Nov	Iberia
24 Oct - 15 Nov	Iberia
17 Oct - 08 Nov	Iberia
15 Oct - 23 Oct	Royal Air Maroc
24 Oct - 30 Oct	Royal Air Maroc
08 Oct - 30 Oct	Royal Air Maroc
24 Oct - 31 Oct	Iberia
09 Oct - 15 Oct	British Airways
05 Oct - 25 Oct	British Airways
01 Oct - 11 Oct	Air Transat
17 Oct - 21 Oct	WestJet
03 Oct - 21 Oct	Air Transat

Also check the deals for one-way flights from Toronto to Lisbon 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 Toronto to Lisbon in October from $304

Return flights