AirHint found the following cheapest return flights from Louisville (SDF) to Prague (PRG) in December 2025 (see full year).
Return flights
| 28 Dec - 17 Jan | Lufthansa | ||
| 26 Dec - 17 Jan | KLM | ||
| 20 Dec - 27 Dec | Allegiant Air |
Also check the deals for one-way flights from Louisville to Prague in December.
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