How far is Decatur, IL, from Champaign, IL?
The distance between Champaign (University of Illinois Willard Airport) and Decatur (Decatur Airport) is 34 miles / 55 kilometers / 30 nautical miles.
The driving distance from Champaign (CMI) to Decatur (DEC) is 55 miles / 89 kilometers, and travel time by car is about 1 hour 11 minutes.
University of Illinois Willard Airport – Decatur Airport
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Distance from Champaign to Decatur
There are several ways to calculate the distance from Champaign to Decatur. Here are two standard methods:
Vincenty's formula (applied above)- 34.252 miles
- 55.122 kilometers
- 29.764 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- 34.189 miles
- 55.022 kilometers
- 29.709 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 Champaign to Decatur?
The estimated flight time from University of Illinois Willard Airport to Decatur Airport is 33 minutes.
What is the time difference between Champaign and Decatur?
Flight carbon footprint between University of Illinois Willard Airport (CMI) and Decatur Airport (DEC)
On average, flying from Champaign to Decatur generates about 30 kg of CO2 per passenger, and 30 kilograms equals 66 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Champaign to Decatur
See the map of the shortest flight path between University of Illinois Willard Airport (CMI) and Decatur Airport (DEC).
Airport information
| Origin | University of Illinois Willard Airport |
|---|---|
| City: | Champaign, IL |
| Country: | United States  |
| IATA Code: | CMI |
| ICAO Code: | KCMI |
| Coordinates: | 40°2′21″N, 88°16′41″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 |