How far is Helena, MT, from Harrison, AR?
The distance between Harrison (Boone County Airport) and Helena (Helena Regional Airport) is 1206 miles / 1940 kilometers / 1048 nautical miles.
The driving distance from Harrison (HRO) to Helena (HLN) is 1494 miles / 2405 kilometers, and travel time by car is about 26 hours 57 minutes.
Boone County Airport – Helena Regional Airport
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Distance from Harrison to Helena
There are several ways to calculate the distance from Harrison to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 1205.571 miles
- 1940.178 kilometers
- 1047.612 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- 1204.060 miles
- 1937.747 kilometers
- 1046.300 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 Harrison to Helena?
The estimated flight time from Boone County Airport to Helena Regional Airport is 2 hours and 46 minutes.
What is the time difference between Harrison and Helena?
The time difference between Harrison and Helena is 1 hour. Helena is 1 hour behind Harrison.
Flight carbon footprint between Boone County Airport (HRO) and Helena Regional Airport (HLN)
On average, flying from Harrison to Helena generates about 162 kg of CO2 per passenger, and 162 kilograms equals 356 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Harrison to Helena
See the map of the shortest flight path between Boone County Airport (HRO) and Helena Regional Airport (HLN).
Airport information
| Origin | Boone County Airport |
|---|---|
| City: | Harrison, AR |
| Country: | United States  |
| IATA Code: | HRO |
| ICAO Code: | KHRO |
| Coordinates: | 36°15′41″N, 93°9′16″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 |