AirHint found the following cheapest return flights from Luxemburg (LUX) to Boston (BOS) in December 2025 (see full year).
Return flights
| 03 Dec - 08 Dec | Lufthansa | ||
| 03 Dec - 09 Dec | Lufthansa | ||
| 25 Dec - 30 Dec | KLM | ||
| 03 Dec - 10 Dec | KLM | ||
| 26 Dec - 11 Jan | KLM | ||
| 22 Dec - 02 Jan | TAP |
Also check the deals for one-way flights from Luxemburg to Boston in December.
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