How far is Casper, WY, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Casper (Casper–Natrona County International Airport) is 373 miles / 600 kilometers / 324 nautical miles.
The driving distance from Helena (HLN) to Casper (CPR) is 522 miles / 840 kilometers, and travel time by car is about 9 hours 13 minutes.
Helena Regional Airport – Casper–Natrona County International Airport
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Distance from Helena to Casper
There are several ways to calculate the distance from Helena to Casper. Here are two standard 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 planet.
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).
How long does it take to fly from Helena to Casper?
The estimated flight time from Helena Regional Airport to Casper–Natrona County International Airport is 1 hour and 12 minutes.
What is the time difference between Helena and Casper?
Flight carbon footprint between Helena Regional Airport (HLN) and Casper–Natrona County International Airport (CPR)
On average, flying from Helena to Casper generates about 80 kg of CO2 per passenger, and 80 kilograms equals 176 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Helena to Casper
See the map of the shortest flight path between Helena Regional Airport (HLN) and Casper–Natrona County International Airport (CPR).
Airport information
| Origin | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States  |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″W |
| Destination | 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 |