# Distance between Spokane, WA (GEG) and Casper, WY (CPR)

Flight distance from Spokane to Casper (Spokane International Airport – Casper–Natrona County International Airport) is 629 miles / 1013 kilometers / 547 nautical miles. Estimated flight time is 1 hour 41 minutes.

Driving distance from Spokane (GEG) to Casper (CPR) is 828 miles / 1332 kilometers and travel time by car is about 13 hours 24 minutes.

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

Shortest flight path between Spokane International Airport (GEG) and Casper–Natrona County International Airport (CPR).

## How far is Casper from Spokane?

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

Vincenty's formula (applied above)
• 629.445 miles
• 1012.993 kilometers
• 546.973 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
• 628.240 miles
• 1011.054 kilometers
• 545.926 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 Spokane International Airport
City: Spokane, WA
Country: United States
IATA Code: GEG
ICAO Code: KGEG
Coordinates: 47°37′11″N, 117°32′2″W

B 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

## Time difference and current local times

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

PDT

MDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 116 kg (257 pounds).

## Frequent Flyer Miles Calculator

Spokane (GEG) → Casper (CPR).

Distance:
629
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
629

Round trip?