How far is Decatur, IL, from Waterloo, IA?

The distance between Waterloo (Waterloo Regional Airport) and Decatur (Decatur Airport) is 263 miles / 423 kilometers / 229 nautical miles.

The driving distance from Waterloo (ALO) to Decatur (DEC) is 326 miles / 525 kilometers, and travel time by car is about 6 hours 14 minutes.

Distance from Waterloo to Decatur

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

Vincenty's formula (applied above)

• 263.087 miles
• 423.397 kilometers
• 228.616 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

• 262.922 miles
• 423.132 kilometers
• 228.473 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 Waterloo to Decatur?

The estimated flight time from Waterloo Regional Airport to Decatur Airport is 59 minutes.

What is the time difference between Waterloo and Decatur?

There is no time difference between Waterloo and Decatur.

Flight carbon footprint between Waterloo Regional Airport (ALO) and Decatur Airport (DEC)

On average, flying from Waterloo to Decatur generates about 64 kg of CO2 per passenger, and 64 kilograms equals 141 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Waterloo to Decatur

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

Airport information

Origin	Waterloo Regional Airport
City:	Waterloo, IA
Country:	United States
IATA Code:	ALO
ICAO Code:	KALO
Coordinates:	42°33′25″N, 92°24′1″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