Air Miles Calculator

Distance between Spokane, WA (GEG) and Washington D.C. (IAD)

Flight distance from Spokane to Washington D.C. (Spokane International Airport – Washington Dulles International Airport) is 2082 miles / 3351 kilometers / 1810 nautical miles. Estimated flight time is 4 hours 26 minutes.

Driving distance from Spokane (GEG) to Washington D.C. (IAD) is 2517 miles / 4051 kilometers and travel time by car is about 41 hours 34 minutes.

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).

Airport information


A Spokane International Airport
City: Spokane, WA
Country: United States Flag of United States
IATA Code: GEG
ICAO Code: KGEG
Coordinates: 47°37′11″N, 117°32′2″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 Spokane and Washington D.C. is 3 hours. Washington D.C. is 3 hours ahead of Spokane.

Time Difference

Spokane, WA

 PST

Washington D.C.

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 227 kg (500 pounds).

Frequent Flyer Miles Calculator

Spokane (GEG) → Washington D.C. (IAD).

Distance:
2082
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2082

Round trip?