AirHint found the following cheapest return flights from Cardiff (CWL) to Vienna (VIE) in December 2025 (see full year).
Return flights
| 01 Dec - 07 Dec | Ryanair | ||
| 18 Dec - 18 Jan | Ryanair | ||
| 13 Dec - 16 Dec | KLM | ||
| 13 Dec - 14 Dec | KLM | ||
| 05 Dec - 07 Dec | KLM | ||
| 20 Dec - 05 Jan | Vueling Airlines | ||
| 02 Dec - 02 Dec | KLM |
Also check the deals for one-way flights from Cardiff to Vienna in December.
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