Map of flight path and driving directions from Helena to Salt Lake City.
Shortest flight path between Helena Regional Airport (HLN) and Salt Lake City International Airport (SLC).
How far is Salt Lake City from Helena?
There are several ways to calculate distances between Helena and Salt Lake City. Here are two common methods:Vincenty's formula (applied above)
- 401.693 miles
- 646.462 kilometers
- 349.061 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
- 402.013 miles
- 646.978 kilometers
- 349.340 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
There is no time difference between Helena and Salt Lake City.
Salt Lake City, UT
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 84 kg (186 pounds).
Frequent Flyer Miles Calculator
Helena (HLN) → Salt Lake City (SLC).