How far is Washington D.C. from Washington D.C.?
The distance between Washington D.C. (Ronald Reagan Washington National Airport) and Washington D.C. (Washington Dulles International Airport) is 23 miles / 38 kilometers / 20 nautical miles.
The driving distance from Washington D.C. (DCA) to Washington D.C. (IAD) is 29 miles / 46 kilometers, and travel time by car is about 44 minutes.
Ronald Reagan Washington National Airport – Washington Dulles International Airport
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Distance from Washington D.C. to Washington D.C.
There are several ways to calculate the distance from Washington D.C. to Washington D.C.. Here are two standard methods:
Vincenty's formula (applied above)- 23.422 miles
- 37.693 kilometers
- 20.353 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 23.372 miles
- 37.613 kilometers
- 20.309 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).
How long does it take to fly from Washington D.C. to Washington D.C.?
The estimated flight time from Ronald Reagan Washington National Airport to Washington Dulles International Airport is 32 minutes.
What is the time difference between Washington D.C. and Washington D.C.?
There is no time difference between Washington D.C. and Washington D.C..
Flight carbon footprint between Ronald Reagan Washington National Airport (DCA) and Washington Dulles International Airport (IAD)
On average, flying from Washington D.C. to Washington D.C. generates about 28 kg of CO2 per passenger, and 28 kilograms equals 63 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Washington D.C. to Washington D.C.
See the map of the shortest flight path between Ronald Reagan Washington National Airport (DCA) and Washington Dulles International Airport (IAD).
Airport information
| Origin | Ronald Reagan Washington National Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States  |
| IATA Code: | DCA |
| ICAO Code: | KDCA |
| Coordinates: | 38°51′7″N, 77°2′15″W |
| Destination | Washington Dulles International Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States |
| IATA Code: | IAD |
| ICAO Code: | KIAD |
| Coordinates: | 38°56′40″N, 77°27′20″W |