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

Return flights

01 Aug - 08 Aug	Air Serbia
20 Aug - 23 Aug	Air Serbia
01 Aug - 15 Aug	Air Serbia
07 Aug - 15 Aug	Air Serbia
15 Aug - 23 Aug	Air Serbia
07 Aug - 16 Aug	Air Serbia
09 Aug - 30 Aug	Air Serbia
14 Aug - 22 Aug	Air Serbia
26 Aug - 16 Sep	Air France
12 Aug - 16 Aug	Air Serbia
08 Aug - 22 Aug	Air Serbia
30 Aug - 06 Sep	Air France
26 Aug - 16 Sep	British Airways	direct
28 Aug - 05 Sep	Air France
25 Aug - 01 Sep	Air Serbia
28 Aug - 05 Sep	British Airways	direct
25 Aug - 01 Sep	British Airways	direct
30 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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from London to Istanbul in August from $206

Return flights