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

Return flights

30 Aug - 09 Sep	Air France
12 Aug - 17 Aug	Air France
30 Aug - 09 Sep	British Airways	direct
13 Aug - 20 Aug	Aegean Airlines
16 Aug - 24 Aug	Aegean Airlines
03 Aug - 10 Aug	LOT
08 Aug - 16 Aug	LOT
03 Aug - 09 Aug	LOT
01 Aug - 09 Aug	LOT
02 Aug - 09 Aug	LOT
12 Aug - 01 Sep	Aegean Airlines
29 Aug - 12 Sep	Air France
22 Aug - 06 Sep	Air France
31 Aug - 06 Sep	Air France
17 Aug - 22 Aug	Air France
10 Aug - 15 Sep	Aegean Airlines
31 Aug - 04 Sep	Air France
22 Aug - 29 Aug	Air France
31 Aug - 04 Sep	Turkish Airlines	direct
31 Aug - 06 Sep	British Airways	direct

Also check the deals for one-way flights from London 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 London to Istanbul in August from 213€

Return flights