AirHint found the following cheapest return flights from Belfast (BHD) to Luxemburg (LUX) in December 2025 (see full year).
Return flights
| 13 Dec - 02 Jan | KLM | ||
| 15 Dec - 02 Jan | KLM | ||
| 12 Dec - 02 Jan | KLM | ||
| 09 Dec - 02 Jan | KLM | ||
| 15 Dec - 03 Jan | KLM | ||
| 16 Dec - 02 Jan | KLM | ||
| 16 Dec - 03 Jan | KLM | ||
| 14 Dec - 03 Jan | easyJet |
Also check the deals for one-way flights from Belfast to Luxemburg in December.
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