AirHint found the following cheapest one-way flights from London (LCY) to Istanbul (IST) in September 2026 (see full year).
One-Way flights
| 09 Sep | SWISS | ||
| 16 Sep | KLM | ||
| 15 Sep | KLM | ||
| 18 Sep | KLM | ||
| 11 Sep | Lufthansa | ||
| 10 Sep | Lufthansa | ||
| 02 Sep | Lufthansa | ||
| 29 Sep | Lufthansa | ||
| 05 Sep | Luxair |
Also check the deals for return flights from London to Istanbul in September.
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