AirHint found the following cheapest one-way flights from Oslo (OSL) to Belgrade (BEG) in December 2025 (see full year).
One-Way flights
| 03 Dec | Norwegian | direct | |
| 15 Dec | Wizz Air | ||
| 08 Dec | Air Serbia | direct | |
| 10 Dec | Scandinavian Airlines | ||
| 10 Dec | Norwegian | direct | |
| 18 Dec | Ryanair | ||
| 22 Dec | Ryanair | ||
| 24 Dec | Ryanair | ||
| 26 Dec | LOT | ||
| 15 Dec | Air Serbia | direct |
Also check the deals for return flights from Oslo to Belgrade in December.
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