Distance between Washington D.C. (IAD) and Washington D.C. (DCA)
Flight distance from Washington D.C. to Washington D.C. (Washington Dulles International Airport – Ronald Reagan Washington National Airport) is 23 miles / 38 kilometers / 20 nautical miles. Estimated flight time is 32 minutes.
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 D.C. – Washington D.C.
How far is Washington D.C. from Washington D.C.?
There are several ways to calculate distances between Los Angeles and Chicago. Here are two common 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 earth.
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).
Flight Duration
Estimated flight time from Washington Dulles International Airport to Ronald Reagan Washington National Airport is 32 minutes.
Time difference
There is no time difference between Washington D.C. and Washington D.C..
Carbon dioxide emissions
On average flying from Washington D.C. to Washington D.C. generates about 28 kg of CO2 per passenger, 28 kilograms is equal to 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.
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 |