How far is Washington D.C. from Washington D.C.?
The distance between Washington D.C. (Washington Dulles International Airport) and Washington D.C. (Ronald Reagan Washington National Airport) is 23 miles / 38 kilometers / 20 nautical miles.
The driving distance from Washington D.C. (IAD) to Washington D.C. (DCA) is 29 miles / 46 kilometers, and travel time by car is about 42 minutes.
Washington Dulles International Airport – Ronald Reagan Washington National 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 Washington Dulles International Airport to Ronald Reagan Washington National 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 Washington Dulles International Airport (IAD) and Ronald Reagan Washington National Airport (DCA)
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 Washington Dulles International Airport (IAD) and Ronald Reagan Washington National Airport (DCA).
Airport information
| Origin | 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 |
| Destination | 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 |