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

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

The driving distance from Decatur (DEC) to Waterloo (ALO) is 326 miles / 525 kilometers, and travel time by car is about 6 hours 15 minutes.

Distance from Decatur to Waterloo

There are several ways to calculate the distance from Decatur to Waterloo. 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 Decatur to Waterloo?

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

What is the time difference between Decatur and Waterloo?

There is no time difference between Decatur and Waterloo.

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

On average, flying from Decatur to Waterloo 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 Decatur to Waterloo

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

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