Map of flight path and driving directions from Sioux City to Helena.
Shortest flight path between Sioux Gateway Airport (SUX) and Helena Regional Airport (HLN).
How far is Helena from Sioux City?
There are several ways to calculate distances between Sioux City and Helena. Here are two common 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 earth.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).
Time difference and current local times
The time difference between Sioux City and Helena is 1 hour. Helena is 1 hour behind Sioux City.
Sioux City, IA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 137 kg (302 pounds).
Frequent Flyer Miles Calculator
Sioux City (SUX) → Helena (HLN).