Air Miles Calculator

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

Distance from Seattle to Washington D.C. (Seattle–Tacoma International Airport – Washington Dulles International Airport) is 2306 miles / 3711 kilometers / 2004 nautical miles.

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)
  • 2305.730 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 earth.

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).

Flight duration

Estimated flight time from Seattle–Tacoma International Airport (SEA) to Washington Dulles International Airport (IAD) is 4 hours 51 minutes.

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
Washington D.C.

Seattle, WA

 PDT

Washington D.C.

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 257 kg (566 pounds).

Airport information


A Seattle–Tacoma International Airport
City: Seattle, WA
Country: United States Flag of United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″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

Seattle to Washington D.C. flight path

Shortest flight path between Seattle–Tacoma International Airport (SEA) and Washington Dulles International Airport (IAD).

Frequent Flyer Miles Calculator

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

Elite level bonus (%):
Booking class bonus (%):
Air miles:
2306
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2306

Round trip?