AirHint found the following cheapest return flights from Cardiff (CWL) to Copenhagen (CPH) in December 2025 (see full year).
Return flights
| 18 Dec - 01 Jan | Ryanair | ||
| 08 Dec - 15 Dec | Ryanair | ||
| 11 Dec - 15 Dec | Ryanair | ||
| 16 Dec - 17 Dec | Vueling Airlines | ||
| 29 Dec - 01 Jan | Ryanair | ||
| 28 Dec - 31 Dec | Ryanair | ||
| 25 Dec - 01 Jan | KLM | ||
| 09 Dec - 09 Dec | KLM |
Also check the deals for one-way flights from Cardiff to Copenhagen in December.
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