The flight distance from Washington Dulles International Airport to Boston Logan International Airport is:

412 miles / 663 km

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Flight path from IAD to BOS

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Distance from IAD to BOS

The total distance from IAD to BOS is 412 miles.

This is equivalent to 663 kilometers or 358 nautical miles.

Your trip begins at Washington Dulles International Airport in Dulles, Virginia.
It ends at Boston Logan International Airport in Boston, Massachusetts.

Your flight direction from IAD to BOS is Northeast (53 degrees from North).

The distance calculator helps you figure out how far it is to fly from IAD to BOS. It does this by computing the straight line flying distance ("as the crow flies"). It uses the great circle formula 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

Boston Logan International Airport

IATA: BOS
ICAO: KBOS
FAA: BOS
City: Boston
State: Massachusetts
Zip code: 02128
Country: United States
Category: airports

Flight distance calculator

Travelmath provides an online flight distance calculator to get the distance between cities. You can also compare all types of locations including airports, cities, states, countries, or zip codes to find the distance between any two points. 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.