AirHint found the following cheapest one-way flights from Toronto (YYZ) to Lisbon (LIS) in September 2025 (see full year).

One-Way flights

22 Sep	Porter Airlines (Canada) Ltd
30 Sep	Air Transat
28 Sep	Air Transat
20 Sep	Air Transat
21 Sep	WestJet
22 Sep	Air Transat	direct
28 Sep	Air Transat	direct
23 Sep	Azores Airlines
16 Sep	WestJet
19 Sep	WestJet

Also check the deals for return flights from Toronto to Lisbon in September.

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 one-way flights from Toronto to Lisbon in September from 207€

One-Way flights