Air Miles Calculator

Distance between Houston, TX (HOU) and Helena, MT (HLN)

Distance from Houston to Helena (William P. Hobby Airport – Helena Regional Airport) is 1476 miles / 2375 kilometers / 1282 nautical miles.

How far is Helena from Houston?

There are several ways to calculate distances between Houston and Helena. Here are two common methods:

Vincenty's formula (applied above)
  • 1475.560 miles
  • 2374.684 kilometers
  • 1282.227 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
  • 1475.881 miles
  • 2375.201 kilometers
  • 1282.506 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 William P. Hobby Airport (HOU) to Helena Regional Airport (HLN) is 3 hours 17 minutes.

Time difference and current local times

The time difference between Houston and Helena is 1 hour. Helena is 1 hour behind Houston.

Time Difference

Houston
Helena

Houston, TX

 CST

Helena, MT

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 169 kg (372 pounds).

Airport information


A William P. Hobby Airport
City: Houston, TX
Country: United States Flag of United States
IATA Code: HOU
ICAO Code: KHOU
Coordinates: 29°38′43″N, 95°16′44″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

Map

Houston to Helena flight map.

Frequent Flyer Miles Calculator

Houston (HOU) → Helena (HLN).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1476
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1476

Round trip?