Air Miles Calculator

Distance between Rock Springs, WY (RKS) and Casper, WY (CPR)

Flight distance from Rock Springs to Casper (Southwest Wyoming Regional Airport – Casper–Natrona County International Airport) is 161 miles / 260 kilometers / 140 nautical miles. Estimated flight time is 48 minutes.

Driving distance from Rock Springs (RKS) to Casper (CPR) is 227 miles / 365 kilometers and travel time by car is about 4 hours 27 minutes.

Map of flight path and driving directions from Rock Springs to Casper.

Shortest flight path between Southwest Wyoming Regional Airport (RKS) and Casper–Natrona County International Airport (CPR).

How far is Casper from Rock Springs?

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

Vincenty's formula (applied above)
  • 161.269 miles
  • 259.537 kilometers
  • 140.139 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
  • 161.032 miles
  • 259.156 kilometers
  • 139.933 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 Southwest Wyoming Regional Airport
City: Rock Springs, WY
Country: United States Flag of United States
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″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

There is no time difference between Rock Springs and Casper.

Time Difference

Rock Springs, WY

 MDT

Casper, WY

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 49 kg (107 pounds).

Frequent Flyer Miles Calculator

Rock Springs (RKS) → Casper (CPR).

Distance:
161
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
161

Round trip?