Cheapest return flights from London to Istanbul in September from 297€

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

Return flights

15 Sep - 30 Sep Lufthansa
11 Sep - 15 Sep Lufthansa
10 Sep - 13 Sep KLM
01 Sep - 29 Sep Lufthansa
18 Sep - 21 Sep KLM
04 Sep - 11 Sep Lufthansa
02 Sep - 10 Sep Lufthansa
08 Sep - 15 Sep Lufthansa
19 Sep - 26 Sep KLM
28 Sep - 30 Sep Lufthansa
28 Sep - 02 Oct KLM

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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