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Seattle (SEA) - Washington D.C. (IAD)
Calculations with different methods
- 2305.730 miles
- 3710.713 kilometers
- 2003.625 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 2300.088 miles
- 3701.633 kilometers
- 1998.722 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Seattle–Tacoma International Airport (SEA) to Washington Dulles International Airport (IAD) is 4 hours 51 minutes.
Time difference and current local times
The time difference between Seattle and Washington D.C. is 3 hours. Washington D.C. is 3 hours ahead of Seattle.
|A||Seattle–Tacoma International Airport|
|B||Washington Dulles International Airport|
Flight map from Seattle to Washington D.C..
Frequent Flyer Miles Calculator
Seattle (SEA) → Washington D.C. (IAD).