Air Miles Calculator

Distance between Casper, WY (CPR) and Helena, MT (HLN)

Flight distance from Casper to Helena (Casper–Natrona County International Airport – Helena Regional Airport) is 373 miles / 600 kilometers / 324 nautical miles. Estimated flight time is 1 hour 12 minutes.

Driving distance from Casper (CPR) to Helena (HLN) is 522 miles / 840 kilometers and travel time by car is about 8 hours 52 minutes.

Map of flight path and driving directions from Casper to Helena.

Shortest flight path between Casper–Natrona County International Airport (CPR) and Helena Regional Airport (HLN).

How far is Helena from Casper?

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

Vincenty's formula (applied above)
  • 372.602 miles
  • 599.645 kilometers
  • 323.783 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
  • 372.162 miles
  • 598.936 kilometers
  • 323.400 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 Flag of United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″W

B Helena Regional Airport
City: Helena, MT
Country: United States Flag of United States
IATA Code: HLN
ICAO Code: KHLN
Coordinates: 46°36′24″N, 111°58′58″W

Time difference and current local times

There is no time difference between Casper and Helena.

Time Difference

Casper, WY

 MST

Helena, MT

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 80 kg (176 pounds).

Frequent Flyer Miles Calculator

Casper (CPR) → Helena (HLN).

Distance:
373
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
373

Round trip?