Map of flight path and driving directions from Casper to Rockford.
Shortest flight path between Casper–Natrona County International Airport (CPR) and Chicago Rockford International Airport (RFD).
How far is Rockford from Casper?
There are several ways to calculate distances between Casper and Rockford. Here are two common 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 earth.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).
|A||Casper–Natrona County International Airport|
|B||Chicago Rockford International Airport|
Time difference and current local times
The time difference between Casper and Rockford is 1 hour. Rockford is 1 hour ahead of Casper.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 142 kg (314 pounds).
Frequent Flyer Miles Calculator
Casper (CPR) → Rockford (RFD).