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

Return flights

26 Aug - 02 Sep	SKY express
26 Aug - 04 Sep	SKY express
26 Aug - 09 Sep	SKY express
26 Aug - 11 Sep	SKY express
30 Aug - 02 Sep	SKY express
30 Aug - 04 Sep	SKY express
30 Aug - 09 Sep	SKY express
30 Aug - 11 Sep	SKY express
07 Aug - 19 Aug	SKY express
16 Aug - 19 Aug	SKY express
12 Aug - 19 Aug	SKY express
16 Aug - 02 Sep	SKY express
16 Aug - 04 Sep	SKY express
26 Aug - 30 Aug	SKY express
07 Aug - 14 Aug	SKY express
13 Aug - 19 Aug	Ryanair
19 Aug - 28 Aug	Aegean Airlines
20 Aug - 31 Aug	Aegean Airlines
17 Aug - 24 Aug	Air Europa
10 Aug - 16 Aug	Air Europa

Also check the deals for one-way flights from Lisbon to Istanbul 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 Lisbon to Istanbul in August from $187

Return flights