Map of flight path and driving directions from Spokane to Washington D.C..
Shortest flight path between Spokane International Airport (GEG) and Washington Dulles International Airport (IAD).
How far is Washington D.C. from Spokane?
There are several ways to calculate distances between Spokane and Washington D.C.. Here are two common methods:Vincenty's formula (applied above)
- 2082.337 miles
- 3351.196 kilometers
- 1809.501 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
- 2077.362 miles
- 3343.190 kilometers
- 1805.178 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).
Time difference and current local times
The time difference between Spokane and Washington D.C. is 3 hours. Washington D.C. is 3 hours ahead of Spokane.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 227 kg (500 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Washington D.C. (IAD).