Air Miles Calculator

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 Flag of 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 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 Spokane and Casper is 1 hour. Casper is 1 hour ahead of Spokane.

Time Difference

Spokane, WA

 PDT

Casper, WY

 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?