AirHint found the following cheapest return flights from Oslo (OSL) to Vienna (VIE) in December 2026 (see full year).
Return flights
| 30 Dec - 15 Jan | Austrian Airlines | direct | |
| 06 Dec - 07 Dec | Norwegian | direct | |
| 29 Dec - 14 Jan | KLM | ||
| 20 Dec - 01 Jan | Norwegian | direct | |
| 20 Dec - 04 Jan | Norwegian | direct |
Also check the deals for one-way flights from Oslo to Vienna in December.
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