Map of flight path and driving directions from Spokane to Helena.
Shortest flight path between Spokane International Airport (GEG) and Helena Regional Airport (HLN).
How far is Helena from Spokane?
There are several ways to calculate distances between Spokane and Helena. Here are two common methods:Vincenty's formula (applied above)
- 270.905 miles
- 435.979 kilometers
- 235.410 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
- 270.172 miles
- 434.799 kilometers
- 234.773 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 Spokane and Helena is 1 hour. Helena is 1 hour ahead of Spokane.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 65 kg (143 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Helena (HLN).