How far is St Augustine, FL, from Helena, MT?
The distance between Helena (Helena Regional Airport) and St Augustine (Northeast Florida Regional Airport) is 2003 miles / 3223 kilometers / 1740 nautical miles.
The driving distance from Helena (HLN) to St Augustine (UST) is 2441 miles / 3928 kilometers, and travel time by car is about 44 hours 7 minutes.
Helena Regional Airport – Northeast Florida Regional Airport
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Distance from Helena to St Augustine
There are several ways to calculate the distance from Helena to St Augustine. Here are two standard methods:
Vincenty's formula (applied above)- 2002.926 miles
- 3223.397 kilometers
- 1740.495 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- 2000.853 miles
- 3220.061 kilometers
- 1738.694 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 St Augustine?
The estimated flight time from Helena Regional Airport to Northeast Florida Regional Airport is 4 hours and 17 minutes.
What is the time difference between Helena and St Augustine?
Flight carbon footprint between Helena Regional Airport (HLN) and Northeast Florida Regional Airport (UST)
On average, flying from Helena to St Augustine generates about 218 kg of CO2 per passenger, and 218 kilograms equals 481 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 St Augustine
See the map of the shortest flight path between Helena Regional Airport (HLN) and Northeast Florida Regional Airport (UST).
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 | Northeast Florida Regional Airport |
|---|---|
| City: | St Augustine, FL |
| Country: | United States |
| IATA Code: | UST |
| ICAO Code: | KSGJ |
| Coordinates: | 29°57′33″N, 81°20′23″W |