Flight McCarran International Airport departs from Las Vegas McCarran International Airport at 14:01 and arrives at Los Angeles International Airport at 15:19.
The flighttime is about 1h 18m. The distance travelled ("as the bird flies"): 377 Km. So the average speed is roughly 290 Km.
The best month to arrive at Las Vegas is May and the most expensive month to fly is July. (Average prices, based on 211 datapoints.)
We have a lot more statistics for flights UA 1246 and between Las Vegas and Los Angeles.