Map of flight path and driving directions from Dallas to Helena.
Shortest flight path between Dallas Love Field (DAL) and Helena Regional Airport (HLN).
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).
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).
Frequent Flyer Miles Calculator
Dallas (DAL) → Helena (HLN).