How far is Helena, MT, from St George, UT?
The distance between St George (St. George Municipal Airport) and Helena (Helena Regional Airport) is 665 miles / 1070 kilometers / 578 nautical miles.
The driving distance from St George (SGU) to Helena (HLN) is 791 miles / 1273 kilometers, and travel time by car is about 13 hours 1 minutes.
St. George Municipal Airport – Helena Regional Airport
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Distance from St George to Helena
There are several ways to calculate the distance from St George to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 665.162 miles
- 1070.474 kilometers
- 578.010 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- 665.875 miles
- 1071.623 kilometers
- 578.630 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 St George to Helena?
The estimated flight time from St. George Municipal Airport to Helena Regional Airport is 1 hour and 45 minutes.
What is the time difference between St George and Helena?
Flight carbon footprint between St. George Municipal Airport (SGU) and Helena Regional Airport (HLN)
On average, flying from St George to Helena generates about 121 kg of CO2 per passenger, and 121 kilograms equals 266 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from St George to Helena
See the map of the shortest flight path between St. George Municipal Airport (SGU) and Helena Regional Airport (HLN).
Airport information
| Origin | St. George Municipal Airport |
|---|---|
| City: | St George, UT |
| Country: | United States  |
| IATA Code: | SGU |
| ICAO Code: | KSGU |
| Coordinates: | 37°2′11″N, 113°30′37″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 |