AirHint found the following cheapest return flights from Istanbul (IST) to Keflavik (KEF) in December 2025 (see full year).
Return flights
| 08 Dec - 11 Dec | Wizz Air UK | ||
| 01 Dec - 08 Dec | Wizz Air | ||
| 11 Dec - 14 Dec | British Airways | ||
| 05 Dec - 12 Dec | Wizz Air | ||
| 22 Dec - 02 Jan | Wizz Air UK | ||
| 15 Dec - 20 Dec | Wizz Air | ||
| 08 Dec - 11 Dec | Icelandair | direct |
Also check the deals for one-way flights from Istanbul to Keflavik in December.
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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