AirHint found the following cheapest return flights from Seoul (ICN) to Belgrade (BEG) in December 2025 (see full year).
Return flights
| 27 Dec - 31 Dec | China Southern | ||
| 27 Dec - 04 Jan | China Southern | ||
| 24 Dec - 27 Jan | Lufthansa | ||
| 26 Dec - 02 Jan | T'way Air | ||
| 28 Dec - 03 Jan | Lufthansa | ||
| 24 Dec - 25 Jan | Lufthansa |
Also check the deals for one-way flights from Seoul to Belgrade in December.
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