Cheapest one-way flights from London to Istanbul in September from $124

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

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

One-Way flights

18 Sep ITA Airways
17 Sep ITA Airways
16 Sep SWISS
03 Sep ITA Airways
10 Sep ITA Airways
02 Sep SWISS
04 Sep Lufthansa
05 Sep Lufthansa
01 Sep Lufthansa
26 Sep Lufthansa

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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