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

Return flights

08 Oct - 17 Oct	Iberia
02 Oct - 09 Oct	Iberia
08 Oct - 16 Oct	Iberia
02 Oct - 06 Oct	Iberia
06 Oct - 16 Oct	Iberia
07 Oct - 14 Oct	Finnair
11 Oct - 14 Oct	Finnair
14 Oct - 24 Oct	Iberia
02 Oct - 20 Oct	Iberia
07 Oct - 28 Oct	Iberia
21 Oct - 04 Nov	Iberia
19 Oct - 20 Nov	Finnair
22 Oct - 05 Nov	Royal Air Maroc
26 Oct - 05 Nov	Royal Air Maroc
22 Oct - 01 Nov	Royal Air Maroc
24 Oct - 01 Nov	Royal Air Maroc
29 Oct - 12 Nov	Royal Air Maroc
31 Oct - 05 Nov	Royal Air Maroc
31 Oct - 12 Nov	Royal Air Maroc
30 Oct - 22 Nov	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 283€

Return flights