# 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
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
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.

CST

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?