AirHint found the following cheapest return flights from Luxemburg (LUX) to Brussels (BRU) in December 2025 (see full year).
Return flights
| 21 Dec - 07 Jan | Ryanair | ||
| 10 Dec - 17 Dec | easyJet | ||
| 12 Dec - 15 Dec | Ryanair | ||
| 07 Dec - 14 Dec | easyJet | ||
| 10 Dec - 10 Dec | Ryanair | ||
| 18 Dec - 18 Dec | Ryanair |
Also check the deals for one-way flights from Luxemburg to Brussels in December.
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