AirHint found the following cheapest return flights from Ljubljana (LJU) to Basel (BSL) in December 2025 (see full year).
Return flights
| 17 Dec - 01 Jan | KLM | ||
| 11 Dec - 16 Dec | Lufthansa | ||
| 19 Dec - 26 Dec | Lufthansa | ||
| 18 Dec - 26 Dec | Lufthansa | ||
| 19 Dec - 27 Dec | Lufthansa | ||
| 16 Dec - 18 Dec | Turkish Airlines | ||
| 28 Dec - 31 Dec | Turkish Airlines |
Also check the deals for one-way flights from Ljubljana to Basel in December.
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