Cheapest return flights from London to Istanbul in September from 155€

Best time to book flights for London (LHR) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Istanbul (IST) in September 2025 (see full year).

Return flights

27 Sep - 03 Oct British Airways direct
30 Sep - 03 Oct British Airways direct
29 Sep - 03 Oct British Airways direct
16 Sep - 15 Oct British Airways direct
23 Sep - 26 Sep British Airways direct
28 Sep - 09 Oct British Airways direct
29 Sep - 09 Oct British Airways direct
20 Sep - 27 Sep British Airways direct
19 Sep - 26 Sep British Airways direct
23 Sep - 07 Oct British Airways direct
26 Sep - 04 Oct British Airways direct
18 Sep - 05 Oct British Airways direct
21 Sep - 05 Oct British Airways direct
22 Sep - 26 Sep British Airways direct
19 Sep - 24 Sep British Airways direct
13 Sep - 19 Sep British Airways direct
08 Sep - 18 Sep British Airways direct
13 Sep - 20 Sep British Airways direct
20 Sep - 24 Sep British Airways direct
23 Sep - 25 Sep British Airways direct

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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