AirHint found the following cheapest return flights from Las Vegas (LAS) to Sofia (SOF) in December 2025 (see full year).
Return flights
| 28 Dec - 13 Jan | Lufthansa | ||
| 29 Dec - 13 Jan | Lufthansa | ||
| 31 Dec - 07 Jan | Lufthansa | ||
| 14 Dec - 03 Jan | Spirit Airlines |
Also check the deals for one-way flights from Las Vegas to Sofia in December.
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