Map of flight path and driving directions from Louisville to Helena.
Shortest flight path between Louisville International Airport (SDF) and Helena Regional Airport (HLN).
How far is Helena from Louisville?
There are several ways to calculate distances between Louisville and Helena. Here are two common methods:Vincenty's formula (applied above)
- 1454.765 miles
- 2341.217 kilometers
- 1264.156 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
- 1451.787 miles
- 2336.425 kilometers
- 1261.569 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 Louisville and Helena is 2 hours. Helena is 2 hours behind Louisville.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 177 kg (389 pounds).
Frequent Flyer Miles Calculator
Louisville (SDF) → Helena (HLN).