Calculations with different methods
- 273.328 miles
- 439.879 kilometers
- 237.516 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
- 272.748 miles
- 438.945 kilometers
- 237.011 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Sheridan County Airport (SHR) to Helena Regional Airport (HLN) is 1 hour 1 minutes.
Time difference and current local times
There is no time difference between Sheridan and Helena.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 63 kg (140 pounds).
Sheridan to Helena flight map.
Frequent Flyer Miles Calculator
Sheridan (SHR) → Helena (HLN).