How far is Sioux Falls, SD, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Sioux Falls (Sioux Falls Regional Airport) is 773 miles / 1244 kilometers / 672 nautical miles.
The driving distance from Helena (HLN) to Sioux Falls (FSD) is 901 miles / 1450 kilometers, and travel time by car is about 16 hours 14 minutes.
Helena Regional Airport – Sioux Falls Regional Airport
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Distance from Helena to Sioux Falls
There are several ways to calculate the distance from Helena to Sioux Falls. Here are two standard methods:
Vincenty's formula (applied above)- 772.792 miles
- 1243.688 kilometers
- 671.538 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- 770.821 miles
- 1240.516 kilometers
- 669.825 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 Sioux Falls?
The estimated flight time from Helena Regional Airport to Sioux Falls Regional Airport is 1 hour and 57 minutes.
What is the time difference between Helena and Sioux Falls?
The time difference between Helena and Sioux Falls is 1 hour. Sioux Falls is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Sioux Falls Regional Airport (FSD)
On average, flying from Helena to Sioux Falls generates about 132 kg of CO2 per passenger, and 132 kilograms equals 291 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 Sioux Falls
See the map of the shortest flight path between Helena Regional Airport (HLN) and Sioux Falls Regional Airport (FSD).
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 | Sioux Falls Regional Airport |
|---|---|
| City: | Sioux Falls, SD |
| Country: | United States |
| IATA Code: | FSD |
| ICAO Code: | KFSD |
| Coordinates: | 43°34′55″N, 96°44′30″W |