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

Return flights

25 Aug - 20 Sep	AJet	direct
29 Aug - 29 Sep	AJet	direct
30 Aug - 18 Sep	AJet	direct
25 Aug - 18 Sep	AJet	direct
31 Aug - 16 Sep	AJet	direct
24 Aug - 24 Sep	Pegasus Airlines	direct
24 Aug - 21 Sep	AJet	direct
30 Aug - 21 Sep	AJet	direct
30 Aug - 15 Sep	AJet	direct
31 Aug - 28 Sep	AJet	direct
31 Aug - 31 Aug	Pegasus Airlines
30 Aug - 31 Aug	AJet
28 Aug - 31 Aug	AJet
29 Aug - 31 Aug	AJet
27 Aug - 31 Aug	AJet
25 Aug - 31 Aug	AJet
26 Aug - 31 Aug	AJet
23 Aug - 31 Aug	Pegasus Airlines
24 Aug - 31 Aug	Pegasus Airlines
22 Aug - 31 Aug	Pegasus Airlines

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 $97

Return flights