AirHint found the following cheapest return flights from Toronto (YTZ) to Lisbon (LIS) in August 2026 (see full year).

Return flights

31 Aug - 30 Sep	Air Transat
18 Aug - 31 Aug	Air Transat
02 Aug - 18 Aug	Air Transat
15 Aug - 29 Aug	Air Transat
05 Aug - 29 Aug	Porter Airlines (Canada) Ltd
08 Aug - 29 Aug	Air Transat
21 Aug - 12 Sep	Air Transat
30 Aug - 20 Sep	Air Transat
06 Aug - 29 Aug	Air Transat
07 Aug - 29 Aug	Porter Airlines (Canada) Ltd
13 Aug - 03 Sep	Air Transat
12 Aug - 23 Aug	Air Transat
09 Aug - 23 Aug	Air Transat
21 Aug - 30 Aug	Air Transat
31 Aug - 07 Sep	Air Transat
20 Aug - 11 Sep	SWISS

Also check the deals for one-way flights from Toronto to Lisbon in August.

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 August from $614

Return flights