How far is Helena from Dallas?
There are several ways to calculate distances between Dallas and Helena. Here are two common methods:Vincenty's formula (applied above)
- 1240.856 miles
- 1996.965 kilometers
- 1078.275 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
- 1240.663 miles
- 1996.653 kilometers
- 1078.106 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).
Estimated flight time from Dallas Love Field (DAL) to Helena Regional Airport (HLN) is 2 hours 50 minutes.
Time difference and current local times
The time difference between Dallas and Helena is 1 hour. Helena is 1 hour behind Dallas.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 163 kg (359 pounds).
Dallas to Helena flight map.
Frequent Flyer Miles Calculator
Dallas (DAL) → Helena (HLN).