How far is Rockford, IL, from Champaign, IL?
The distance between Champaign (University of Illinois Willard Airport) and Rockford (Chicago Rockford International Airport) is 155 miles / 249 kilometers / 135 nautical miles.
The driving distance from Champaign (CMI) to Rockford (RFD) is 191 miles / 308 kilometers, and travel time by car is about 3 hours 36 minutes.
University of Illinois Willard Airport – Chicago Rockford International Airport
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Distance from Champaign to Rockford
There are several ways to calculate the distance from Champaign to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 154.809 miles
- 249.141 kilometers
- 134.526 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- 154.958 miles
- 249.381 kilometers
- 134.655 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 Rockford?
The estimated flight time from University of Illinois Willard Airport to Chicago Rockford International Airport is 47 minutes.
What is the time difference between Champaign and Rockford?
Flight carbon footprint between University of Illinois Willard Airport (CMI) and Chicago Rockford International Airport (RFD)
On average, flying from Champaign to Rockford generates about 48 kg of CO2 per passenger, and 48 kilograms equals 105 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 Rockford
See the map of the shortest flight path between University of Illinois Willard Airport (CMI) and Chicago Rockford International Airport (RFD).
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 | Chicago Rockford International Airport |
|---|---|
| City: | Rockford, IL |
| Country: | United States |
| IATA Code: | RFD |
| ICAO Code: | KRFD |
| Coordinates: | 42°11′43″N, 89°5′49″W |