Map of flight path and driving directions from Birmingham to Decatur.
Shortest flight path between Birmingham–Shuttlesworth International Airport (BHM) and Decatur Airport (DEC).
How far is Decatur from Birmingham?
There are several ways to calculate distances between Birmingham and Decatur. Here are two common methods:Vincenty's formula (applied above)
- 448.045 miles
- 721.058 kilometers
- 389.340 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
- 448.812 miles
- 722.293 kilometers
- 390.007 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
There is no time difference between Birmingham and Decatur.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 91 kg (201 pounds).
Frequent Flyer Miles Calculator
Birmingham (BHM) → Decatur (DEC).