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

Return flights

08 Jul - 13 Jul	Air Serbia
08 Jul - 10 Jul	Air Serbia
08 Jul - 16 Jul	Air Serbia
11 Jul - 13 Jul	Air Serbia
08 Jul - 15 Jul	Air Serbia
11 Jul - 26 Jul	Air Serbia
08 Jul - 12 Jul	Air Serbia
04 Jul - 13 Jul	Air Serbia
04 Jul - 01 Aug	Air Serbia
01 Jul - 08 Jul	British Airways	direct
02 Jul - 10 Jul	British Airways	direct
25 Jul - 01 Aug	Air Serbia
18 Jul - 01 Aug	Air Serbia
10 Jul - 03 Aug	British Airways	direct
18 Jul - 14 Aug	Air Serbia
26 Jul - 24 Aug	Air Serbia
28 Jul - 04 Aug	Air Serbia
26 Jul - 04 Aug	Air Serbia
28 Jul - 07 Aug	Air Serbia
31 Jul - 03 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 160€

Return flights