1-stop connections via intermediate airports. Durations exclude layover.
Loading map...
Looking for flights from Seattle (SEA) to Dulles (IAD)? DepartureMap shows you all available direct flights and 1-stop connecting options between these two cities.
There is a direct flight from Seattle to Dulles with an average flight time of 4h 51m, covering a distance of 3,702 km. This route is operated by United Airlines.
20 connecting routes are available with 1 stop, flying via airports such as Toronto (YYZ), Newark (EWR), Atlanta (ATL). Total flight times shown exclude layover time at the connecting airport.