Cheapest return flights from London to Istanbul in September from 168€

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

Return flights

07 Sep - 28 Sep British Airways direct
12 Sep - 28 Sep KLM
23 Sep - 28 Sep British Airways direct
25 Sep - 28 Sep British Airways direct
15 Sep - 30 Sep British Airways direct
10 Sep - 30 Sep KLM
13 Sep - 13 Oct KLM
26 Sep - 28 Sep KLM
28 Sep - 29 Sep KLM
19 Sep - 30 Sep KLM
12 Sep - 27 Sep KLM
30 Sep - 07 Oct British Airways direct
28 Sep - 03 Oct KLM
27 Sep - 03 Oct KLM
25 Sep - 21 Oct KLM
21 Sep - 01 Oct KLM
13 Sep - 13 Oct British Airways direct
28 Sep - 07 Oct KLM
19 Sep - 04 Oct KLM
29 Sep - 03 Oct KLM

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.