AirHint found the following cheapest return flights from Klagenfurt (KLU) to Sandefjord (TRF) in December 2025 (see full year).
Return flights
| 15 Dec - 22 Dec | Ryanair | ||
| 11 Dec - 15 Dec | Austrian Airlines | ||
| 12 Dec - 15 Dec | Austrian Airlines | ||
| 28 Dec - 03 Jan | Austrian Airlines |
Also check the deals for one-way flights from Klagenfurt to Sandefjord in December.
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