Flight Dulles International Airport departs from Washington Dulles International Airport at 18:15 and arrives at Seattle Tacoma International Airport at 12:51.The flight has a short stop at San Francisco.
The flighttime is about 21h 36m. The distance travelled ("as the bird flies"): 4975 Km. So the average speed is roughly 230 Km.
There is an 3 hour time difference between Washington and Seattle
USD
