Map of flight path and driving directions from Houston to Helena.
Shortest flight path between Houston William P. Hobby Airport (HOU) and Helena Regional Airport (HLN).
How far is Helena from Houston?
There are several ways to calculate distances between Houston and Helena. Here are two common methods:Vincenty's formula (applied above)
- 1475.560 miles
- 2374.684 kilometers
- 1282.227 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
- 1475.881 miles
- 2375.201 kilometers
- 1282.506 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 Houston and Helena is 1 hour. Helena is 1 hour behind Houston.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 178 kg (392 pounds).
Frequent Flyer Miles Calculator
Houston (HOU) → Helena (HLN).