How far is Rockford, IL, from Casper, WY?
The distance between Casper (Casper–Natrona County International Airport) and Rockford (Chicago Rockford International Airport) is 886 miles / 1426 kilometers / 770 nautical miles.
The driving distance from Casper (CPR) to Rockford (RFD) is 959 miles / 1544 kilometers, and travel time by car is about 19 hours 1 minutes.
Casper–Natrona County International Airport – Chicago Rockford International Airport
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Distance from Casper to Rockford
There are several ways to calculate the distance from Casper to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 886.085 miles
- 1426.015 kilometers
- 769.986 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- 883.748 miles
- 1422.255 kilometers
- 767.956 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 Casper to Rockford?
The estimated flight time from Casper–Natrona County International Airport to Chicago Rockford International Airport is 2 hours and 10 minutes.
What is the time difference between Casper and Rockford?
The time difference between Casper and Rockford is 1 hour. Rockford is 1 hour ahead of Casper.
Flight carbon footprint between Casper–Natrona County International Airport (CPR) and Chicago Rockford International Airport (RFD)
On average, flying from Casper to Rockford generates about 142 kg of CO2 per passenger, and 142 kilograms equals 314 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Casper to Rockford
See the map of the shortest flight path between Casper–Natrona County International Airport (CPR) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | Casper–Natrona County International Airport |
|---|---|
| City: | Casper, WY |
| Country: | United States  |
| IATA Code: | CPR |
| ICAO Code: | KCPR |
| Coordinates: | 42°54′28″N, 106°27′50″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 |