Distance between Washington D.C. (DCA) and Seattle, WA (SEA)
Flight distance from Washington D.C. to Seattle (Ronald Reagan Washington National Airport – Seattle–Tacoma International Airport) is 2328 miles / 3747 kilometers / 2023 nautical miles. Estimated flight time is 4 hours 54 minutes.
Driving distance from Washington D.C. (DCA) to Seattle (SEA) is 2805 miles / 4515 kilometers and travel time by car is about 49 hours 28 minutes.
Washington D.C. – Seattle
How far is Seattle from Washington D.C.?
There are several ways to calculate distances between Los Angeles and Chicago. 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 to Seattle–Tacoma International Airport is 4 hours 54 minutes.
Time difference
The time difference between Washington D.C. and Seattle is 3 hours. Seattle is 3 hours behind Washington D.C..
Washington D.C. time to Seattle time converter
Carbon dioxide emissions
On average flying from Washington D.C. to Seattle generates about 255 kg of CO2 per passenger, 255 kilograms is equal to 563 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Washington D.C. to Seattle
Shortest flight path between Ronald Reagan Washington National Airport (DCA) and Seattle–Tacoma International Airport (SEA).
Airport information
| Origin | 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 |
| Destination | 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 |
Airlines flying from Washington D.C. (DCA) to Seattle (SEA)
| Alaska Airlines |