Flight Dulles International Airport departs from Washington Dulles International Airport at 19:30 and arrives at Los Angeles International Airport at 00:24.The flight has a short stop at San Francisco.
The flighttime is about 7h 54m. The distance travelled ("as the bird flies"): 4550 Km. So the average speed is roughly 576 Km.
There is an 3 hour time difference between Washington and Los Angeles