The distance from Colorado Springs Airport to Washington Dulles International Airport is:

1,690 miles / 2 720 km driving

1,464 miles / 2 356 km flying

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Distance from COS to IAD

The total driving distance from COS to IAD is 1,690 miles or 2 720 kilometers.

The total straight line flight distance from COS to IAD is 1,464 miles.

This is equivalent to 2 356 kilometers or 1,272 nautical miles.

Your trip begins at Colorado Springs Airport in Colorado Springs, Colorado. It ends at Washington Dulles International Airport in Dulles, Virginia.

Your flight direction from COS to IAD is East (81 degrees from North).

The distance calculator helps you figure out how far it is to get from COS to IAD. It does this by computing the straight line flying distance ("as the crow flies") and the driving distance if the route is drivable. It uses all this data to compute the total travel mileage.

Colorado Springs Airport

IATA: COS
ICAO: KCOS
FAA: COS
City: Colorado Springs
State: Colorado
Zip code: 80916
Country: United States
Category: airports

Washington Dulles International Airport

IATA: IAD
ICAO: KIAD
FAA: IAD
City: Dulles
State: Virginia
Zip code: 20166
Country: United States
Category: airports

Distance calculator

Travelmath helps you find distances based on actual road trip directions, or the straight line flight distance. You can get the distance between cities, airports, states, countries, or zip codes to figure out the best route to travel to your destination. Compare the results to the straight line distance to determine whether it's better to drive or fly. The database uses the latitude and longitude of each location to calculate distance using the great circle distance formula. The calculation is done using the Vincenty algorithm and the WGS84 ellipsoid model of the Earth, which is the same one used by most GPS receivers. This gives you the flying distance "as the crow flies." Find your flight distances quickly to estimate the number of frequent flyer miles you'll accumulate. Or ask how far is it between cities to solve your homework problems. You can lookup U.S. cities, or expand your search to get the world distance for international trips. You can also print out pages with a travel map.