Air Miles Calculator

Distance between Huntsville, AL (HSV) and Decatur, IL (DEC)

Flight distance from Huntsville to Decatur (Huntsville International Airport – Decatur Airport) is 376 miles / 606 kilometers / 327 nautical miles. Estimated flight time is 1 hour 12 minutes.

Driving distance from Huntsville (HSV) to Decatur (DEC) is 487 miles / 784 kilometers and travel time by car is about 8 hours 38 minutes.

Map of flight path and driving directions from Huntsville to Decatur.

Shortest flight path between Huntsville International Airport (HSV) and Decatur Airport (DEC).

How far is Decatur from Huntsville?

There are several ways to calculate distances between Huntsville and Decatur. Here are two common methods:

Vincenty's formula (applied above)
  • 376.465 miles
  • 605.862 kilometers
  • 327.139 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
  • 377.037 miles
  • 606.783 kilometers
  • 327.636 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 Huntsville International Airport
City: Huntsville, AL
Country: United States Flag of United States
IATA Code: HSV
ICAO Code: KHSV
Coordinates: 34°38′13″N, 86°46′30″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 Huntsville and Decatur.

Time Difference

Huntsville, AL

 CST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 80 kg (177 pounds).

Frequent Flyer Miles Calculator

Huntsville (HSV) → Decatur (DEC).

Distance:
376
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
376

Round trip?