AirHint found the following cheapest return flights from Istanbul (IST) to London (LGW) in August 2025 (see full year).

Return flights

21 Aug - 25 Aug	AJet
26 Aug - 02 Sep	Aegean Airlines
27 Aug - 25 Sep	AJet
29 Aug - 04 Sep	Pegasus Airlines
19 Aug - 26 Aug	AJet
19 Aug - 04 Sep	AJet
19 Aug - 06 Sep	AJet
16 Aug - 30 Aug	Pegasus Airlines
16 Aug - 07 Sep	Pegasus Airlines
16 Aug - 06 Sep	Pegasus Airlines
16 Aug - 01 Sep	Pegasus Airlines
21 Aug - 18 Sep	AJet
31 Aug - 02 Sep	Pegasus Airlines
19 Aug - 24 Aug	AJet
16 Aug - 24 Aug	Pegasus Airlines
18 Aug - 28 Aug	Pegasus Airlines
18 Aug - 25 Aug	Pegasus Airlines
21 Aug - 28 Aug	AJet
19 Aug - 31 Aug	Pegasus Airlines
18 Aug - 24 Aug	Pegasus Airlines

Also check the deals for one-way flights from Istanbul to London 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 Istanbul to London in August from 181€

Return flights