If you are interesting in going to Vegas next week out of Philadelphia, hurry to Southwest.com! I was shocked to see $68 flights out of PHL to LAS on Saturday 9/28. Coming back isn't bad either. Round trip under $200! There are 4 different flights, 2 at $68 and 2 at $75 for the 28th. It probably won't last so hurry if you're interested!