AirHint found the following cheapest return flights from Las Vegas (LAS) to Vienna (VIE) in December 2025 (see full year).
Return flights
| 10 Dec - 15 Dec | SWISS | ||
| 03 Dec - 10 Dec | British Airways | ||
| 25 Dec - 17 Jan | KLM | ||
| 11 Dec - 18 Dec | United |
Also check the deals for one-way flights from Las Vegas to Vienna in December.
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