How far is Helena, MT, from Casper, WY?
The distance between Casper (Casper–Natrona County International Airport) and Helena (Helena Regional Airport) is 373 miles / 600 kilometers / 324 nautical miles.
The driving distance from Casper (CPR) to Helena (HLN) is 522 miles / 840 kilometers, and travel time by car is about 9 hours 8 minutes.
Casper–Natrona County International Airport – Helena Regional Airport
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Distance from Casper to Helena
There are several ways to calculate the distance from Casper to Helena. 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 Casper to Helena?
The estimated flight time from Casper–Natrona County International Airport to Helena Regional Airport is 1 hour and 12 minutes.
What is the time difference between Casper and Helena?
Flight carbon footprint between Casper–Natrona County International Airport (CPR) and Helena Regional Airport (HLN)
On average, flying from Casper to Helena 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 Casper to Helena
See the map of the shortest flight path between Casper–Natrona County International Airport (CPR) and Helena Regional Airport (HLN).
Airport information
| Origin | 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 |
| Destination | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″W |