How far is Sioux City, IA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Sioux City (Sioux Gateway Airport) is 822 miles / 1323 kilometers / 714 nautical miles.
The driving distance from Helena (HLN) to Sioux City (SUX) is 989 miles / 1591 kilometers, and travel time by car is about 17 hours 27 minutes.
Helena Regional Airport – Sioux Gateway Airport
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Distance from Helena to Sioux City
There are several ways to calculate the distance from Helena to Sioux City. Here are two standard methods:
Vincenty's formula (applied above)- 821.902 miles
- 1322.723 kilometers
- 714.213 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- 819.984 miles
- 1319.637 kilometers
- 712.547 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 City?
The estimated flight time from Helena Regional Airport to Sioux Gateway Airport is 2 hours and 3 minutes.
What is the time difference between Helena and Sioux City?
The time difference between Helena and Sioux City is 1 hour. Sioux City is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Sioux Gateway Airport (SUX)
On average, flying from Helena to Sioux City generates about 137 kg of CO2 per passenger, and 137 kilograms equals 302 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 City
See the map of the shortest flight path between Helena Regional Airport (HLN) and Sioux Gateway Airport (SUX).
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 Gateway Airport |
|---|---|
| City: | Sioux City, IA |
| Country: | United States |
| IATA Code: | SUX |
| ICAO Code: | KSUX |
| Coordinates: | 42°24′9″N, 96°23′3″W |