AirHint found the following cheapest one-way flights from London (LHR) to Istanbul (IST) in December 2025 (see full year).
One-Way flights
| 09 Dec | Air Serbia | ||
| 05 Dec | Air Serbia | ||
| 03 Dec | Air Serbia | ||
| 10 Dec | Air Serbia | ||
| 02 Dec | Air Serbia | ||
| 04 Dec | Air Serbia | ||
| 16 Dec | Vueling Airlines | ||
| 29 Dec | Eurowings | ||
| 30 Dec | Eurowings | ||
| 07 Dec | KLM |
Also check the deals for return flights from London to Istanbul in December.
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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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