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

One-Way flights

27 Sep	WestJet
22 Sep	WestJet
16 Sep	WestJet
30 Sep	TAP	direct
06 Sep	Air Transat
17 Sep	Air Transat	direct
02 Sep	Air Transat
14 Sep	Air Transat	direct
15 Sep	Air Transat	direct
10 Sep	Air Transat	direct

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 204€

One-Way flights