1.Go during the slow season: July, August, and mid-December are best.
2.Don't buy alcohol — it's free.
3.Though road-tripping is arguably the cheapest way to get to Vegas (from the West Coast), flying is not as expensive as you might think. Look for deals on local airlines.
4.You can also take a bus. From L.A., round-trip prices are in the $50–$95 range.