Map of flight path and driving directions from Richmond to Decatur.
Shortest flight path between Richmond International Airport (RIC) and Decatur Airport (DEC).
How far is Decatur from Richmond?
There are several ways to calculate distances between Richmond and Decatur. Here are two common methods:Vincenty's formula (applied above)
- 644.187 miles
- 1036.718 kilometers
- 559.783 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
- 642.790 miles
- 1034.470 kilometers
- 558.569 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).
Time difference and current local times
The time difference between Richmond and Decatur is 1 hour. Decatur is 1 hour behind Richmond.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 118 kg (261 pounds).
Frequent Flyer Miles Calculator
Richmond (RIC) → Decatur (DEC).