How far is Great Falls, MT, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Great Falls (Great Falls International Airport) is 67 miles / 108 kilometers / 58 nautical miles.
The driving distance from Helena (HLN) to Great Falls (GTF) is 89 miles / 144 kilometers, and travel time by car is about 1 hour 50 minutes.
Helena Regional Airport – Great Falls International Airport
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Distance from Helena to Great Falls
There are several ways to calculate the distance from Helena to Great Falls. Here are two standard methods:
Vincenty's formula (applied above)- 67.009 miles
- 107.840 kilometers
- 58.229 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- 66.984 miles
- 107.800 kilometers
- 58.208 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 Great Falls?
The estimated flight time from Helena Regional Airport to Great Falls International Airport is 37 minutes.
What is the time difference between Helena and Great Falls?
Flight carbon footprint between Helena Regional Airport (HLN) and Great Falls International Airport (GTF)
On average, flying from Helena to Great Falls generates about 35 kg of CO2 per passenger, and 35 kilograms equals 77 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 Great Falls
See the map of the shortest flight path between Helena Regional Airport (HLN) and Great Falls International Airport (GTF).
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 | Great Falls International Airport |
|---|---|
| City: | Great Falls, MT |
| Country: | United States |
| IATA Code: | GTF |
| ICAO Code: | KGTF |
| Coordinates: | 47°28′55″N, 111°22′15″W |
Airlines flying from Helena (HLN) to Great Falls (GTF)
| Alaska Airlines |