Flight Dulles International Airport departs from Washington Dulles International Airport at 17:15 and arrives at Copenhagen Copenhagen Airport, Kastrup at 07:15.
The flighttime is about 8h 00m. The distance travelled ("as the bird flies"): 10076 Km. So the average speed is roughly 1260 Km.
There is an 6 hour time difference between Washington and Copenhagen
THB
