Air Miles Calculator

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

Flight distance from Houston to Helena (Houston William P. Hobby Airport – Helena Regional Airport) is 1476 miles / 2375 kilometers / 1282 nautical miles. Estimated flight time is 3 hours 17 minutes.

Driving distance from Houston (HOU) to Helena (HLN) is 1829 miles / 2943 kilometers and travel time by car is about 31 hours 8 minutes.

Map of flight path and driving directions from Houston to Helena.

Shortest flight path between Houston William P. Hobby Airport (HOU) and Helena Regional Airport (HLN).

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).

Airport information


A Houston 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

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, TX

 CST

Helena, MT

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 178 kg (392 pounds).

Frequent Flyer Miles Calculator

Houston (HOU) → Helena (HLN).

Distance:
1476
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1476

Round trip?