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

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

Driving distance from Casper (CPR) to Chicago (ORD) is 1145 miles / 1842 kilometers and travel time by car is about 18 hours 53 minutes.

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

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

## How far is Chicago from Casper?

There are several ways to calculate distances between Casper and Chicago. 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 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

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

## Time difference and current local times

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

MST

CST

## Carbon dioxide emissions

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

## Frequent Flyer Miles Calculator

Casper (CPR) → Chicago (ORD).

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

### In total

Total frequent flyer miles:
949

Round trip?