How far is Helena from Oklahoma City?
There are several ways to calculate distances between Oklahoma City and Helena. Here are two common methods:Vincenty's formula (applied above)
- 1075.608 miles
- 1731.024 kilometers
- 934.678 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
- 1074.992 miles
- 1730.032 kilometers
- 934.143 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 Will Rogers World Airport (OKC) to Helena Regional Airport (HLN) is 2 hours 32 minutes.
Time difference and current local times
The time difference between Oklahoma City and Helena is 1 hour. Helena is 1 hour behind Oklahoma City.
Oklahoma City, OK
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 155 kg (343 pounds).
Oklahoma City to Helena flight map.
Frequent Flyer Miles Calculator
Oklahoma City (OKC) → Helena (HLN).