AirHint found the following cheapest one-way flights from Istanbul (IST) to Lisbon (LIS) in August 2025 (see full year).

One-Way flights

01 Aug	Wizz Air
20 Aug	Wizz Air
28 Aug	Pegasus Airlines
04 Aug	Pegasus Airlines
26 Aug	Pegasus Airlines
19 Aug	Pegasus Airlines
08 Aug	Pegasus Airlines
14 Aug	Pegasus Airlines
05 Aug	Pegasus Airlines
18 Aug	Wizz Air

Also check the deals for return flights from Istanbul 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 one-way flights from Istanbul to Lisbon in August from $134

One-Way flights