AirHint found the following cheapest return flights from Seoul (ICN) to Keflavik (KEF) in December 2026 (see full year).
Return flights
| 03 Dec - 10 Dec | Scandinavian Airlines | ||
| 01 Dec - 08 Dec | Finnair | ||
| 14 Dec - 22 Dec | Finnair | ||
| 16 Dec - 23 Dec | Finnair |
Also check the deals for one-way flights from Seoul to Keflavik in December.
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