Distance between Washington D.C. (DCA) and Seattle, WA (SEA)
Distance from Washington D.C. to Seattle (Ronald Reagan Washington National Airport – Seattle–Tacoma International Airport) is 2328 miles / 3747 kilometers / 2023 nautical miles.
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Washington D.C. - Seattle
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).
Flight duration
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..
Time Difference
Washington D.C.
Seattle, WA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 273 kg (602 pounds).
Airport information
| A | Ronald Reagan Washington National Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States  |
| IATA Code: | DCA |
| ICAO Code: | KDCA |
| Coordinates: | 38°51′7″N, 77°2′15″W |
| B | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |
Map
Washington D.C. to Seattle flight map.
Frequent Flyer Miles Calculator
Washington D.C. (DCA) → Seattle (SEA).
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