How far is Decatur, IL, from Pierre, SD?

The distance between Pierre (Pierre Regional Airport) and Decatur (Decatur Airport) is 665 miles / 1070 kilometers / 578 nautical miles.

The driving distance from Pierre (PIR) to Decatur (DEC) is 840 miles / 1352 kilometers, and travel time by car is about 15 hours 29 minutes.

Distance from Pierre to Decatur

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

Vincenty's formula (applied above)

• 664.743 miles
• 1069.800 kilometers
• 577.646 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

• 663.550 miles
• 1067.879 kilometers
• 576.609 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 Pierre to Decatur?

The estimated flight time from Pierre Regional Airport to Decatur Airport is 1 hour and 45 minutes.

What is the time difference between Pierre and Decatur?

There is no time difference between Pierre and Decatur.

Flight carbon footprint between Pierre Regional Airport (PIR) and Decatur Airport (DEC)

On average, flying from Pierre to Decatur generates about 121 kg of CO2 per passenger, and 121 kilograms equals 266 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Pierre to Decatur

See the map of the shortest flight path between Pierre Regional Airport (PIR) and Decatur Airport (DEC).

Airport information

Origin	Pierre Regional Airport
City:	Pierre, SD
Country:	United States
IATA Code:	PIR
ICAO Code:	KPIR
Coordinates:	44°22′57″N, 100°17′9″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