Cheapest one-way flights from London to Istanbul in September from $144

AirHint found the following cheapest one-way flights from London (LCY) to Istanbul (IST) in September 2025 (see full year).

One-Way flights

01 Sep KLM
12 Sep British Airways
10 Sep British Airways
02 Sep British Airways
09 Sep British Airways
16 Sep British Airways
03 Sep British Airways
23 Sep British Airways
05 Sep British Airways
19 Sep British Airways

Also check the deals for return flights from London to Istanbul in September.

Skyscanner

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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