How far is Washington D.C. from Decatur, IL?
The distance between Decatur (Decatur Airport) and Washington D.C. (Ronald Reagan Washington National Airport) is 637 miles / 1025 kilometers / 553 nautical miles.
The driving distance from Decatur (DEC) to Washington D.C. (DCA) is 739 miles / 1189 kilometers, and travel time by car is about 14 hours 14 minutes.
Decatur Airport – Ronald Reagan Washington National Airport
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Distance from Decatur to Washington D.C.
There are several ways to calculate the distance from Decatur to Washington D.C.. Here are two standard methods:
Vincenty's formula (applied above)- 636.720 miles
- 1024.702 kilometers
- 553.295 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- 635.182 miles
- 1022.226 kilometers
- 551.958 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 Decatur to Washington D.C.?
The estimated flight time from Decatur Airport to Ronald Reagan Washington National Airport is 1 hour and 42 minutes.
What is the time difference between Decatur and Washington D.C.?
Flight carbon footprint between Decatur Airport (DEC) and Ronald Reagan Washington National Airport (DCA)
On average, flying from Decatur to Washington D.C. generates about 117 kg of CO2 per passenger, and 117 kilograms equals 259 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Decatur to Washington D.C.
See the map of the shortest flight path between Decatur Airport (DEC) and Ronald Reagan Washington National Airport (DCA).
Airport information
| Origin | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States  |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″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 |