How far is Helena, MT, from Blountville, TN?
The distance between Blountville (Blountville Tri-Cities Regional Airport) and Helena (Helena Regional Airport) is 1672 miles / 2691 kilometers / 1453 nautical miles.
The driving distance from Blountville (TRI) to Helena (HLN) is 2059 miles / 3314 kilometers, and travel time by car is about 37 hours 11 minutes.
Blountville Tri-Cities Regional Airport – Helena Regional Airport
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Distance from Blountville to Helena
There are several ways to calculate the distance from Blountville to Helena. 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 Blountville to Helena?
The estimated flight time from Blountville Tri-Cities Regional Airport to Helena Regional Airport is 3 hours and 39 minutes.
What is the time difference between Blountville and Helena?
The time difference between Blountville and Helena is 2 hours. Helena is 2 hours behind Blountville.
Flight carbon footprint between Blountville Tri-Cities Regional Airport (TRI) and Helena Regional Airport (HLN)
On average, flying from Blountville to Helena 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 Blountville to Helena
See the map of the shortest flight path between Blountville Tri-Cities Regional Airport (TRI) and Helena Regional Airport (HLN).
Airport information
| Origin | 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 |
| 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 |