Air Miles Calculator

Distance between Casper, WY (CPR) and Rockford, IL (RFD)

Distance from Casper to Rockford (Casper–Natrona County International Airport – Chicago Rockford International Airport) is 886 miles / 1426 kilometers / 770 nautical miles.

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).

Flight duration

Estimated flight time from Casper–Natrona County International Airport (CPR) to Chicago Rockford International Airport (RFD) is 2 hours 10 minutes.

Time difference and current local times

The time difference between Casper and Rockford is 1 hour. Rockford is 1 hour ahead of Casper.

Time Difference

Casper
Rockford

Casper, WY

 MST

Rockford, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 142 kg (314 pounds).

Airport information


A Casper–Natrona County International Airport
City: Casper, WY
Country: United States Flag of United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″W

B Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W

Map

Casper to Rockford flight map.

Frequent Flyer Miles Calculator

Casper (CPR) → Rockford (RFD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
886
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
886

Round trip?