Flight George Bush Intercontinental Airport departs from Houston George Bush Intercontinental Airport at 07:45 and arrives at Washington Dulles International Airport at 15:53.The flight has a short stop at Atlanta.
The flighttime is about 7h 08m. The distance travelled ("as the bird flies"): 1984 Km. So the average speed is roughly 278 Km.
There is an 1 hour time difference between Houston and Washington