Can't tell where you are from, but you might consider flying into Phoenix and driving up. It is a scenic drive through the mountains and desert and, depending on where you are from, you will find it to be much different in terms of landscape. Usually the drop off charges taking a car to LV is very, very low. With recent re-routing, you could make that trip from Phx airport to south LV in between four and 4.5 hours. Part of that is going over Hoover Dam which you might consider as another benefit.