Cheapest one-way flights from London to Istanbul in September from $125

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

One-Way flights

19 Sep Air Serbia
30 Sep Air Serbia
26 Sep Air Serbia
12 Sep Air Serbia
21 Sep Air Serbia
06 Sep Air Serbia
29 Sep Air Serbia
02 Sep KLM
16 Sep KLM
07 Sep KLM

Also check the deals for return 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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