Uber and Lyft have been live in Vegas for a little more then a month. Both are just now being allowed to access the airport. Lyft being the first of the 2 options. Before the ride sharing companies were blocked from airport pick ups and drop offs.

If you have not used Uber before and want to try it out. Download the app and enter this promo code: W1GCFSPZUE
It will give you a $20 ride for free. That more then enough to get from the airport to most of the strip, or from most of the strip to downtown. The code only works for your first ride.

Be aware that most of the casinos on the strip have specific pick up locations, so its best to ask the bellman/front desk people to find the location. Its usually near the main valet, but not at the main valet......think around the corner or so.