How far is Springfield, IL, from Decatur, IL?

The distance between Decatur (Decatur Airport) and Springfield (Springfield Abraham Lincoln Capital Airport) is 43 miles / 70 kilometers / 38 nautical miles.

The driving distance from Decatur (DEC) to Springfield (SPI) is 45 miles / 72 kilometers, and travel time by car is about 1 hour 2 minutes.

Distance from Decatur to Springfield

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

Vincenty's formula (applied above)

• 43.202 miles
• 69.527 kilometers
• 37.542 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

• 43.095 miles
• 69.354 kilometers
• 37.448 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 Decatur to Springfield?

The estimated flight time from Decatur Airport to Springfield Abraham Lincoln Capital Airport is 34 minutes.

What is the time difference between Decatur and Springfield?

There is no time difference between Decatur and Springfield.

Flight carbon footprint between Decatur Airport (DEC) and Springfield Abraham Lincoln Capital Airport (SPI)

On average, flying from Decatur to Springfield generates about 31 kg of CO2 per passenger, and 31 kilograms equals 69 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Decatur to Springfield

See the map of the shortest flight path between Decatur Airport (DEC) and Springfield Abraham Lincoln Capital Airport (SPI).

Airport information

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

Destination	Springfield Abraham Lincoln Capital Airport
City:	Springfield, IL
Country:	United States
IATA Code:	SPI
ICAO Code:	KSPI
Coordinates:	39°50′38″N, 89°40′40″W