The distance from Washington Dulles International Airport to Rockville, Maryland is:

27 miles / 43 km driving

18 miles / 29 km flying

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Map of distance from IAD to Rockville, MD

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Distance from IAD to Rockville, MD

The total driving distance from IAD to Rockville, MD is 27 miles or 43 kilometers.

The total straight line flight distance from IAD to Rockville, MD is 18 miles.

This is equivalent to 29 kilometers or 16 nautical miles.

Your trip begins at Washington Dulles International Airport in Dulles, Virginia. It ends in Rockville, Maryland.

Your flight direction from IAD to Rockville, MD is Northeast (60 degrees from North).

The distance calculator helps you figure out how far it is to get from IAD to Rockville, MD. 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.

Washington Dulles International Airport

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

Rockville, Maryland

City: Rockville
State: Maryland
Country: United States
Category: cities

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.



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