Flight Love Field Airport departs from Dallas Love Field Airport at 06:35 and arrives at Las Vegas McCarran International Airport at 09:05.The flight has a short stop at Los Angeles.
The flighttime is about 4h 30m. The distance travelled ("as the bird flies"): 2036 Km. So the average speed is roughly 452 Km.
There is an 2 hour time difference between Dallas and Las Vegas