Air Miles Calculator

Distance between Seattle, WA (BFI) and Washington D.C. (IAD)

Flight distance from Seattle to Washington D.C. (Seattle Boeing Field – Washington Dulles International Airport) is 2305 miles / 3710 kilometers / 2003 nautical miles. Estimated flight time is 4 hours 51 minutes.

Driving distance from Seattle (BFI) to Washington D.C. (IAD) is 2792 miles / 4494 kilometers and travel time by car is about 46 hours 18 minutes.

Map of flight path and driving directions from Seattle to Washington D.C..

Shortest flight path between Seattle Boeing Field (BFI) and Washington Dulles International Airport (IAD).

How far is Washington D.C. from Seattle?

There are several ways to calculate distances between Seattle and Washington D.C.. Here are two common methods:

Vincenty's formula (applied above)
  • 2305.212 miles
  • 3709.878 kilometers
  • 2003.174 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
  • 2299.575 miles
  • 3700.808 kilometers
  • 1998.276 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).

Airport information


A Seattle Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

B Washington Dulles International Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: IAD
ICAO Code: KIAD
Coordinates: 38°56′40″N, 77°27′20″W

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.

Time Difference

Seattle, WA

 PST

Washington D.C.

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 253 kg (557 pounds).

Frequent Flyer Miles Calculator

Seattle (BFI) → Washington D.C. (IAD).

Distance:
2305
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2305

Round trip?