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

Return flights

15 Jul - 22 Jul	Lufthansa
28 Jul - 04 Aug	KLM
07 Jul - 14 Jul	Lufthansa
16 Jul - 19 Jul	KLM
28 Jul - 05 Aug	Lufthansa
01 Jul - 22 Jul	Lufthansa
01 Jul - 06 Jul	Lufthansa
06 Jul - 23 Jul	Lufthansa
22 Jul - 29 Jul	Lufthansa
07 Jul - 09 Jul	Lufthansa
02 Jul - 09 Jul	Lufthansa
13 Jul - 23 Jul	Lufthansa
29 Jul - 02 Aug	Lufthansa
30 Jul - 02 Aug	Lufthansa
20 Jul - 13 Aug	Lufthansa
16 Jul - 20 Aug	KLM
24 Jul - 21 Aug	Lufthansa
25 Jul - 14 Aug	KLM
25 Jul - 02 Aug	KLM
18 Jul - 30 Aug	KLM

Also check the deals for one-way flights from London to Istanbul in July.

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 July from $384

Return flights