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

Return flights

22 Oct - 29 Oct	Royal Air Maroc
29 Oct - 05 Nov	Royal Air Maroc
08 Oct - 22 Oct	Air Transat
01 Oct - 14 Oct	Air Transat
01 Oct - 22 Oct	Air Transat
08 Oct - 16 Oct	Air Transat
19 Oct - 22 Oct	Air Transat
07 Oct - 21 Oct	Air Transat
15 Oct - 05 Nov	Royal Air Maroc
18 Oct - 29 Oct	Air Transat
14 Oct - 29 Oct	Air Transat
03 Oct - 14 Oct	Air Transat
24 Oct - 01 Nov	Royal Air Maroc
26 Oct - 01 Nov	Royal Air Maroc
26 Oct - 11 Nov	Royal Air Maroc
22 Oct - 05 Nov	Royal Air Maroc
29 Oct - 11 Nov	Royal Air Maroc
27 Oct - 12 Nov	Delta
29 Oct - 05 Nov	TAP	direct
28 Oct - 11 Nov	Delta

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 379€

Return flights