How far is Seattle from Washington D.C.?
There are several ways to calculate distances between Washington D.C. and Seattle. Here are two common methods:Vincenty's formula (applied above)
- 2328.467 miles
- 3747.304 kilometers
- 2023.382 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
- 2322.777 miles
- 3738.148 kilometers
- 2018.438 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Estimated flight time from Ronald Reagan Washington National Airport (DCA) to Seattle–Tacoma International Airport (SEA) is 4 hours 54 minutes.
Time difference and current local times
The time difference between Washington D.C. and Seattle is 3 hours. Seattle is 3 hours behind Washington D.C..
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 273 kg (602 pounds).
|A||Ronald Reagan Washington National Airport|
|B||Seattle–Tacoma International Airport|
Washington D.C. to Seattle flight map.
Frequent Flyer Miles Calculator
Washington D.C. (DCA) → Seattle (SEA).