How far is Chattanooga, TN, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Chattanooga (Chattanooga Metropolitan Airport) is 1603 miles / 2580 kilometers / 1393 nautical miles.
The driving distance from Helena (HLN) to Chattanooga (CHA) is 1955 miles / 3147 kilometers, and travel time by car is about 35 hours 13 minutes.
Helena Regional Airport – Chattanooga Metropolitan Airport
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Distance from Helena to Chattanooga
There are several ways to calculate the distance from Helena to Chattanooga. Here are two standard methods:
Vincenty's formula (applied above)- 1603.402 miles
- 2580.426 kilometers
- 1393.319 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- 1600.859 miles
- 2576.333 kilometers
- 1391.108 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 Chattanooga?
The estimated flight time from Helena Regional Airport to Chattanooga Metropolitan Airport is 3 hours and 32 minutes.
What is the time difference between Helena and Chattanooga?
Flight carbon footprint between Helena Regional Airport (HLN) and Chattanooga Metropolitan Airport (CHA)
On average, flying from Helena to Chattanooga generates about 186 kg of CO2 per passenger, and 186 kilograms equals 410 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 Chattanooga
See the map of the shortest flight path between Helena Regional Airport (HLN) and Chattanooga Metropolitan Airport (CHA).
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 | Chattanooga Metropolitan Airport |
|---|---|
| City: | Chattanooga, TN |
| Country: | United States |
| IATA Code: | CHA |
| ICAO Code: | KCHA |
| Coordinates: | 35°2′7″N, 85°12′13″W |