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Flight distance & time
Washington Dulles International Airport → Seattle Tacoma International Airport
IADSEA
- Distance
- 3,701 km · 2,299 mi
- Flight time
- 05h 22m
- CO₂ per passenger
- 333 kg
This Washington Dulles International Airport → Seattle Tacoma International Airport route is 3,701 km (2,299 mi) end to end. The estimated flight time is 05h 22m, and a passenger's share of CO₂ works out at roughly 333 kg.
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Your route
- FromIADWashington Dulles International AirportDulles, Virginia
- ToSEASeattle Tacoma International AirportSeattle, Washington
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~8 flights/day
Airlines on this route
Alaska AirlinesDelta Air LinesUnited Airlines
Common questions
Washington Dulles International Airport to Seattle Tacoma International Airport FAQ
How far is Washington Dulles International Airport from Seattle Tacoma International Airport?
Washington Dulles International Airport (IAD) and Seattle Tacoma International Airport (SEA) are 3,701 km (2,299 mi) apart, measured along the great-circle route.
How long is the flight from Washington Dulles International Airport to Seattle Tacoma International Airport?
A direct IAD–SEA flight covers the distance in about 05h 22m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Washington Dulles International Airport to Seattle Tacoma International Airport produce?
A passenger's share of CO₂ on the IAD–SEA route is roughly 333 kg.
Which airlines fly from Washington Dulles International Airport to Seattle Tacoma International Airport?
Alaska Airlines, Delta Air Lines, United Airlines operate scheduled service between IAD and SEA.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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