How far is Blountville, TN, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Blountville (Blountville Tri-Cities Regional Airport) is 1672 miles / 2691 kilometers / 1453 nautical miles.
The driving distance from Helena (HLN) to Blountville (TRI) is 2045 miles / 3291 kilometers, and travel time by car is about 37 hours 19 minutes.
Helena Regional Airport – Blountville Tri-Cities Regional Airport
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Distance from Helena to Blountville
There are several ways to calculate the distance from Helena to Blountville. Here are two standard methods:
Vincenty's formula (applied above)- 1672.304 miles
- 2691.313 kilometers
- 1453.193 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- 1669.086 miles
- 2686.134 kilometers
- 1450.396 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 Blountville?
The estimated flight time from Helena Regional Airport to Blountville Tri-Cities Regional Airport is 3 hours and 39 minutes.
What is the time difference between Helena and Blountville?
Flight carbon footprint between Helena Regional Airport (HLN) and Blountville Tri-Cities Regional Airport (TRI)
On average, flying from Helena to Blountville generates about 191 kg of CO2 per passenger, and 191 kilograms equals 421 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 Blountville
See the map of the shortest flight path between Helena Regional Airport (HLN) and Blountville Tri-Cities Regional Airport (TRI).
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 | Blountville Tri-Cities Regional Airport |
|---|---|
| City: | Blountville, TN |
| Country: | United States |
| IATA Code: | TRI |
| ICAO Code: | KTRI |
| Coordinates: | 36°28′30″N, 82°24′26″W |