How far is Decatur, IL, from Madison, WI?

The distance between Madison (Dane County Regional Airport) and Decatur (Decatur Airport) is 229 miles / 369 kilometers / 199 nautical miles.

The driving distance from Madison (MSN) to Decatur (DEC) is 252 miles / 406 kilometers, and travel time by car is about 4 hours 45 minutes.

Distance from Madison to Decatur

There are several ways to calculate the distance from Madison to Decatur. Here are two standard methods:

Vincenty's formula (applied above)

• 229.413 miles
• 369.204 kilometers
• 199.354 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 229.675 miles
• 369.626 kilometers
• 199.582 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).

How long does it take to fly from Madison to Decatur?

The estimated flight time from Dane County Regional Airport to Decatur Airport is 56 minutes.

What is the time difference between Madison and Decatur?

There is no time difference between Madison and Decatur.

Flight carbon footprint between Dane County Regional Airport (MSN) and Decatur Airport (DEC)

On average, flying from Madison to Decatur generates about 59 kg of CO2 per passenger, and 59 kilograms equals 130 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Madison to Decatur

See the map of the shortest flight path between Dane County Regional Airport (MSN) and Decatur Airport (DEC).

Airport information

Origin	Dane County Regional Airport
City:	Madison, WI
Country:	United States
IATA Code:	MSN
ICAO Code:	KMSN
Coordinates:	43°8′23″N, 89°20′15″W

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