How far is Seattle, WA, from Washington D.C.?
The distance between Washington D.C. (Washington Dulles International Airport) and Seattle (Seattle–Tacoma International Airport) is 2306 miles / 3711 kilometers / 2004 nautical miles.
The driving distance from Washington D.C. (IAD) to Seattle (SEA) is 2743 miles / 4414 kilometers, and travel time by car is about 49 hours 22 minutes.
Washington Dulles International Airport – Seattle–Tacoma International Airport
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Distance from Washington D.C. to Seattle
There are several ways to calculate the distance from Washington D.C. to Seattle. Here are two standard methods:
Vincenty's formula (applied above)- 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 planet.
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 – the shortest distance between two points).
How long does it take to fly from Washington D.C. to Seattle?
The estimated flight time from Washington Dulles International Airport to Seattle–Tacoma International Airport is 4 hours and 51 minutes.
What is the time difference between Washington D.C. and Seattle?
Flight carbon footprint between Washington Dulles International Airport (IAD) and Seattle–Tacoma International Airport (SEA)
On average, flying from Washington D.C. to Seattle generates about 253 kg of CO2 per passenger, and 253 kilograms equals 557 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
See the map of the shortest flight path between Washington Dulles International Airport (IAD) and Seattle–Tacoma International Airport (SEA).
Airport information
| Origin | Washington Dulles International Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States  |
| IATA Code: | IAD |
| ICAO Code: | KIAD |
| Coordinates: | 38°56′40″N, 77°27′20″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. (IAD) to Seattle (SEA)
| United Airlines |