# Distance between Casper, WY (CPR) and Green Bay, WI (GRB)

Flight distance from Casper to Green Bay (Casper–Natrona County International Airport – Green Bay–Austin Straubel International Airport) is 923 miles / 1485 kilometers / 802 nautical miles. Estimated flight time is 2 hours 14 minutes.

Driving distance from Casper (CPR) to Green Bay (GRB) is 1091 miles / 1756 kilometers and travel time by car is about 18 hours 33 minutes.

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

Shortest flight path between Casper–Natrona County International Airport (CPR) and Green Bay–Austin Straubel International Airport (GRB).

## How far is Green Bay from Casper?

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

Vincenty's formula (applied above)
• 922.848 miles
• 1485.180 kilometers
• 801.933 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
• 920.389 miles
• 1481.222 kilometers
• 799.796 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 Green Bay–Austin Straubel International Airport
City: Green Bay, WI
Country: United States
IATA Code: GRB
ICAO Code: KGRB
Coordinates: 44°29′6″N, 88°7′46″W

## Time difference and current local times

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

MDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 145 kg (320 pounds).

## Frequent Flyer Miles Calculator

Casper (CPR) → Green Bay (GRB).

Distance:
923
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
923

Round trip?