AirHint found the following cheapest return flights from Oklahoma City (OKC) to Vienna (VIE) in December 2025 (see full year).
Return flights
| 15 Dec - 10 Jan | United | ||
| 23 Dec - 17 Jan | Frontier Airlines | ||
| 16 Dec - 10 Jan | United | ||
| 17 Dec - 10 Jan | United | ||
| 13 Dec - 03 Jan | Frontier Airlines | ||
| 14 Dec - 03 Jan | Frontier Airlines |
Also check the deals for one-way flights from Oklahoma City to Vienna in December.
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