The cheapest Luxembourg to Las Vegas return flight on the radar right now is €594, flying with KLM + Air France via one or more connections. It covers departures in November 2026, and every dated link below opens that exact LUX–LAS search on Skyscanner. The price we usually record on this route is €609. Across 46 recorded checks it has ranged between €582 and €713. Our sampling points to November 2026 as the cheapest month to fly Luxembourg to Las Vegas.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Luxembourg? We track 61 other departure cities for Las Vegas, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Luxembourg to Las Vegas is often still worth booking within a day or two of the fare we found.