AirHint found the following cheapest return flights from Graz (GRZ) to Seoul (ICN) in December 2025 (see full year).
Return flights
| 05 Dec - 12 Dec | Austrian Airlines | ||
| 05 Dec - 10 Dec | Lufthansa | ||
| 31 Dec - 07 Jan | Lufthansa | ||
| 24 Dec - 02 Jan | Lufthansa |
Also check the deals for one-way flights from Graz to Seoul in December.
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