AirHint found the following cheapest return flights from Oslo (OSL) to Belgrade (BEG) in January 2026 (see full year).
Return flights
| 21 Jan - 04 Feb | Norwegian | direct | |
| 21 Jan - 28 Jan | Norwegian | direct | |
| 04 Jan - 10 Jan | Ryanair | ||
| 04 Jan - 10 Jan | Air Serbia | direct |
Also check the deals for one-way flights from Oslo to Belgrade in January.
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