Cheapest return flights from London to Istanbul in September from 174€

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

Return flights

26 Sep - 06 Oct British Airways direct
16 Sep - 30 Sep KLM
11 Sep - 21 Sep British Airways direct
19 Sep - 22 Sep British Airways direct
26 Sep - 29 Sep British Airways direct
23 Sep - 30 Sep KLM
16 Sep - 19 Sep KLM
19 Sep - 24 Sep British Airways direct
11 Sep - 15 Sep British Airways direct
12 Sep - 16 Sep KLM
12 Sep - 17 Sep KLM
06 Sep - 10 Oct Air Serbia
26 Sep - 02 Oct KLM
19 Sep - 04 Oct British Airways direct
25 Sep - 02 Oct Air France
06 Sep - 10 Oct British Airways direct
30 Sep - 04 Oct British Airways direct
27 Sep - 02 Oct British Airways direct
25 Sep - 02 Oct British Airways direct
26 Sep - 15 Oct Vueling Airlines

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

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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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