Air Miles Calculator

Distance between Chicago, IL (ORD) and Casper, WY (CPR)

Flight distance from Chicago to Casper (Chicago O'Hare International Airport – Casper–Natrona County International Airport) is 949 miles / 1527 kilometers / 825 nautical miles. Estimated flight time is 2 hours 17 minutes.

Driving distance from Chicago (ORD) to Casper (CPR) is 1143 miles / 1839 kilometers and travel time by car is about 18 hours 48 minutes.

Map of flight path and driving directions from Chicago to Casper.

Shortest flight path between Chicago O'Hare International Airport (ORD) and Casper–Natrona County International Airport (CPR).

How far is Casper from Chicago?

There are several ways to calculate distances between Chicago and Casper. Here are two common methods:

Vincenty's formula (applied above)
  • 949.022 miles
  • 1527.304 kilometers
  • 824.678 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
  • 946.532 miles
  • 1523.295 kilometers
  • 822.514 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).

Airport information


A Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

B 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

Time difference and current local times

The time difference between Chicago and Casper is 1 hour. Casper is 1 hour behind Chicago.

Time Difference

Chicago, IL

 CST

Casper, WY

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 147 kg (325 pounds).

Frequent Flyer Miles Calculator

Chicago (ORD) → Casper (CPR).

Distance:
949
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
949

Round trip?