AirHint found the following cheapest return flights from Las Vegas (LAS) to Barcelona (BCN) in December 2025 (see full year).
Return flights
| 03 Dec - 10 Dec | Delta | ||
| 10 Dec - 16 Dec | Delta | ||
| 30 Dec - 13 Jan | Air France | ||
| 01 Dec - 07 Dec | Delta | ||
| 17 Dec - 10 Jan | British Airways | ||
| 19 Dec - 01 Jan | WestJet |
Also check the deals for one-way flights from Las Vegas to Barcelona in December.
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