Distance between Oklahoma City, OK (OKC) and Helena, MT (HLN)
Distance from Oklahoma City to Helena (Will Rogers World Airport – Helena Regional Airport) is 1076 miles / 1731 kilometers / 935 nautical miles.
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Oklahoma City - Helena
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).
Flight duration
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.
Time Difference
Oklahoma City, OK
Helena, MT
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 155 kg (343 pounds).
Airport information
| A | Will Rogers World Airport |
|---|---|
| City: | Oklahoma City, OK |
| Country: | United States  |
| IATA Code: | OKC |
| ICAO Code: | KOKC |
| Coordinates: | 35°23′35″N, 97°36′2″W |
| B | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″W |
Map
Oklahoma City to Helena flight map.
Frequent Flyer Miles Calculator
Oklahoma City (OKC) → Helena (HLN).
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