Air Miles Calculator

Distance between Birmingham, AL (BHM) and Decatur, IL (DEC)

Flight distance from Birmingham to Decatur (Birmingham–Shuttlesworth International Airport – Decatur Airport) is 448 miles / 721 kilometers / 389 nautical miles. Estimated flight time is 1 hour 20 minutes.

Driving distance from Birmingham (BHM) to Decatur (DEC) is 560 miles / 901 kilometers and travel time by car is about 9 hours 55 minutes.

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).

Airport information


A Birmingham–Shuttlesworth International Airport
City: Birmingham, AL
Country: United States Flag of United States
IATA Code: BHM
ICAO Code: KBHM
Coordinates: 33°33′46″N, 86°45′12″W

B Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W

Time difference and current local times

There is no time difference between Birmingham and Decatur.

Time Difference

Birmingham, AL

 CDT

Decatur, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 91 kg (201 pounds).

Frequent Flyer Miles Calculator

Birmingham (BHM) → Decatur (DEC).

Distance:
448
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
448

Round trip?