How far is Houston, TX, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Houston (Houston George Bush Intercontinental Airport) is 1454 miles / 2340 kilometers / 1263 nautical miles.
The driving distance from Helena (HLN) to Houston (IAH) is 1813 miles / 2917 kilometers, and travel time by car is about 32 hours 17 minutes.
Helena Regional Airport – Houston George Bush Intercontinental Airport
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Distance from Helena to Houston
There are several ways to calculate the distance from Helena to Houston. Here are two standard methods:
Vincenty's formula (applied above)- 1453.955 miles
- 2339.914 kilometers
- 1263.453 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 1454.201 miles
- 2340.309 kilometers
- 1263.666 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).
How long does it take to fly from Helena to Houston?
The estimated flight time from Helena Regional Airport to Houston George Bush Intercontinental Airport is 3 hours and 15 minutes.
What is the time difference between Helena and Houston?
The time difference between Helena and Houston is 1 hour. Houston is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Houston George Bush Intercontinental Airport (IAH)
On average, flying from Helena to Houston generates about 177 kg of CO2 per passenger, and 177 kilograms equals 389 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Helena to Houston
See the map of the shortest flight path between Helena Regional Airport (HLN) and Houston George Bush Intercontinental Airport (IAH).
Airport information
| Origin | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States  |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″W |
| Destination | Houston George Bush Intercontinental Airport |
|---|---|
| City: | Houston, TX |
| Country: | United States |
| IATA Code: | IAH |
| ICAO Code: | KIAH |
| Coordinates: | 29°59′3″N, 95°20′29″W |