Flight Dulles International Airport departs from Washington Dulles International Airport at 12:50 and arrives at Phoenix Sky Harbor International Airport at 18:13.The flight has a short stop at Chicago.
The flighttime is about 8h 23m. The distance travelled ("as the bird flies"): 3838 Km. So the average speed is roughly 458 Km.
There is an 3 hour time difference between Washington and Phoenix