Air Miles Calculator

Distance between Louisville, KY (SDF) and Decatur, IL (DEC)

Flight distance from Louisville to Decatur (Louisville International Airport – Decatur Airport) is 204 miles / 328 kilometers / 177 nautical miles. Estimated flight time is 53 minutes.

Driving distance from Louisville (SDF) to Decatur (DEC) is 290 miles / 467 kilometers and travel time by car is about 5 hours 9 minutes.

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

Shortest flight path between Louisville International Airport (SDF) and Decatur Airport (DEC).

How far is Decatur from Louisville?

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

Vincenty's formula (applied above)
  • 203.674 miles
  • 327.781 kilometers
  • 176.988 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
  • 203.438 miles
  • 327.402 kilometers
  • 176.783 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 Louisville International Airport
City: Louisville, KY
Country: United States Flag of United States
IATA Code: SDF
ICAO Code: KSDF
Coordinates: 38°10′27″N, 85°44′9″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

The time difference between Louisville and Decatur is 1 hour. Decatur is 1 hour behind Louisville.

Time Difference

Louisville, KY

 EDT

Decatur, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 55 kg (121 pounds).

Frequent Flyer Miles Calculator

Louisville (SDF) → Decatur (DEC).

Distance:
204
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
204

Round trip?