Flight Hartsfield Jackson International Airport departs from Atlanta Hartsfield Jackson International Airport at 21:38 and arrives at Las Vegas McCarran International Airport at 23:02.
The flighttime is about 4h 24m. The distance travelled ("as the bird flies"): 3416 Km. So the average speed is roughly 776 Km.
There is an 3 hour time difference between Atlanta and Las Vegas
