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

Return flights

09 Aug - 19 Aug	SKY express
05 Aug - 19 Aug	SKY express
07 Aug - 19 Aug	SKY express
02 Aug - 19 Aug	SKY express
26 Aug - 16 Sep	SKY express
02 Aug - 05 Aug	SKY express
26 Aug - 09 Sep	SKY express
27 Aug - 16 Sep	Vueling Airlines
29 Aug - 12 Sep	easyJet
27 Aug - 09 Sep	Vueling Airlines
26 Aug - 02 Sep	SKY express
29 Aug - 10 Sep	easyJet
09 Aug - 12 Aug	SKY express
09 Aug - 28 Aug	SKY express
05 Aug - 12 Aug	SKY express
07 Aug - 12 Aug	SKY express
07 Aug - 28 Aug	SKY express
22 Aug - 12 Sep	easyJet
25 Aug - 09 Sep	Vueling Airlines
26 Aug - 08 Sep	SKY express

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 $258

Return flights