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

Return flights

12 Oct - 22 Oct	Finnair
02 Oct - 14 Oct	Iberia
06 Oct - 14 Oct	Iberia
08 Oct - 16 Oct	Iberia
07 Oct - 14 Oct	Iberia
21 Oct - 28 Oct	Iberia
07 Oct - 16 Oct	Iberia
12 Oct - 21 Oct	Iberia
23 Oct - 15 Nov	Iberia
24 Oct - 15 Nov	Iberia
02 Oct - 06 Oct	Iberia
03 Oct - 15 Oct	Iberia
13 Oct - 15 Nov	Iberia
29 Oct - 05 Nov	Iberia
22 Oct - 15 Nov	Iberia
27 Oct - 03 Nov	Iberia
28 Oct - 04 Nov	Iberia
28 Oct - 07 Nov	Air Transat	direct
17 Oct - 23 Nov	TAP	direct
14 Oct - 05 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Toronto to Lisbon in October from 254€

Return flights