Air Miles Calculator

Distance between Oklahoma City, OK (OKC) and Helena, MT (HLN)

Flight distance from Oklahoma City to Helena (Will Rogers World Airport – Helena Regional Airport) is 1076 miles / 1731 kilometers / 935 nautical miles. Estimated flight time is 2 hours 32 minutes.

Driving distance from Oklahoma City (OKC) to Helena (HLN) is 1469 miles / 2364 kilometers and travel time by car is about 23 hours 56 minutes.

Map of flight path and driving directions from Oklahoma City to Helena.

Shortest flight path between Will Rogers World Airport (OKC) and Helena Regional Airport (HLN).

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).

Airport information


A Will Rogers World Airport
City: Oklahoma City, OK
Country: United States Flag of 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 Flag of United States
IATA Code: HLN
ICAO Code: KHLN
Coordinates: 46°36′24″N, 111°58′58″W

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

 CST

Helena, MT

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 155 kg (343 pounds).

Frequent Flyer Miles Calculator

Oklahoma City (OKC) → Helena (HLN).

Distance:
1076
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1076

Round trip?