Washington Dulles International Airport (IAD) to Seattle–Tacoma International Airport (SEA)
3,702 km
Distance
3
Airlines
29
Flights per week
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The route from Washington Dulles International Airport (IAD) to Seattle–Tacoma International Airport (SEA) covers a distance of 3,702 km . 3 airlines operate this route with up to 29 flights per week, ensuring excellent connectivity between Dulles and Seattle.
Alaska Airlines, Delta Air Lines, United Airlines offer direct service on this route. Whether you're traveling for business or leisure, the frequency of flights means you can find departures throughout the day.