How far is Harrison, AR, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Harrison (Boone County Airport) is 1206 miles / 1940 kilometers / 1048 nautical miles.
The driving distance from Helena (HLN) to Harrison (HRO) is 1497 miles / 2409 kilometers, and travel time by car is about 27 hours 3 minutes.
Helena Regional Airport – Boone County Airport
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Distance from Helena to Harrison
There are several ways to calculate the distance from Helena to Harrison. 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 Helena to Harrison?
The estimated flight time from Helena Regional Airport to Boone County Airport is 2 hours and 46 minutes.
What is the time difference between Helena and Harrison?
The time difference between Helena and Harrison is 1 hour. Harrison is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Boone County Airport (HRO)
On average, flying from Helena to Harrison 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 Helena to Harrison
See the map of the shortest flight path between Helena Regional Airport (HLN) and Boone County Airport (HRO).
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 | Boone County Airport |
|---|---|
| City: | Harrison, AR |
| Country: | United States |
| IATA Code: | HRO |
| ICAO Code: | KHRO |
| Coordinates: | 36°15′41″N, 93°9′16″W |