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Flight distance & time
Seattle Tacoma International Airport → Washington Dulles International Airport
SEAIAD
- Distance
- 3,701 km · 2,299 mi
- Flight time
- 05h 22m
- CO₂ per passenger
- 333 kg
This Seattle Tacoma International Airport → Washington Dulles 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
- FromSEASeattle Tacoma International AirportSeattle, Washington
- ToIADWashington Dulles International AirportDulles, Virginia
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~3 flights/day
Airlines on this route
United Airlines
Common questions
Seattle Tacoma International Airport to Washington Dulles International Airport FAQ
How far is Seattle Tacoma International Airport from Washington Dulles International Airport?
Seattle Tacoma International Airport (SEA) and Washington Dulles International Airport (IAD) are 3,701 km (2,299 mi) apart, measured along the great-circle route.
How long is the flight from Seattle Tacoma International Airport to Washington Dulles International Airport?
A direct SEA–IAD 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 Seattle Tacoma International Airport to Washington Dulles International Airport produce?
A passenger's share of CO₂ on the SEA–IAD route is roughly 333 kg.
Which airlines fly from Seattle Tacoma International Airport to Washington Dulles International Airport?
United Airlines operate scheduled service between SEA and IAD.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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