AirHint found the following cheapest return flights from Athens (ATH) to Belgrade (BEG) in December 2026 (see full year).
Return flights
| 04 Dec - 06 Dec | Air Serbia | direct | |
| 17 Dec - 20 Dec | Lufthansa | ||
| 27 Dec - 30 Dec | Lufthansa | ||
| 24 Dec - 27 Dec | Austrian Airlines |
Also check the deals for one-way flights from Athens to Belgrade in December.
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