AirHint found the following cheapest return flights from Southend (SEN) to Luxemburg (LUX) in December 2025 (see full year).
Return flights
| 23 Dec - 30 Dec | easyJet | ||
| 19 Dec - 23 Dec | easyJet | ||
| 31 Dec - 02 Jan | easyJet | ||
| 31 Dec - 31 Dec | easyJet | ||
| 15 Dec - 18 Dec | easyJet | ||
| 29 Dec - 01 Jan | easyJet |
Also check the deals for one-way flights from Southend to Luxemburg in December.
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