Air Miles Calculator

Distance between Denver, CO (DEN) and Decatur, IL (DEC)

Flight distance from Denver to Decatur (Denver International Airport – Decatur Airport) is 840 miles / 1351 kilometers / 730 nautical miles. Estimated flight time is 2 hours 5 minutes.

Driving distance from Denver (DEN) to Decatur (DEC) is 948 miles / 1525 kilometers and travel time by car is about 16 hours 2 minutes.

Map of flight path and driving directions from Denver to Decatur.

Shortest flight path between Denver International Airport (DEN) and Decatur Airport (DEC).

How far is Decatur from Denver?

There are several ways to calculate distances between Denver and Decatur. Here are two common methods:

Vincenty's formula (applied above)
  • 839.513 miles
  • 1351.066 kilometers
  • 729.517 nautical miles

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

Haversine formula
  • 837.422 miles
  • 1347.700 kilometers
  • 727.700 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).

Airport information


A Denver International Airport
City: Denver, CO
Country: United States Flag of United States
IATA Code: DEN
ICAO Code: KDEN
Coordinates: 39°51′42″N, 104°40′22″W

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

Time difference and current local times

The time difference between Denver and Decatur is 1 hour. Decatur is 1 hour ahead of Denver.

Time Difference

Denver, CO

 MDT

Decatur, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 138 kg (305 pounds).

Frequent Flyer Miles Calculator

Denver (DEN) → Decatur (DEC).

Distance:
840
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
840

Round trip?