Map of flight path and driving directions from Houston to Great Falls.
Shortest flight path between Houston William P. Hobby Airport (HOU) and Great Falls International Airport (GTF).
How far is Great Falls from Houston?
There are several ways to calculate distances between Houston and Great Falls. Here are two common methods:Vincenty's formula (applied above)
- 1501.098 miles
- 2415.783 kilometers
- 1304.418 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
- 1501.605 miles
- 2416.599 kilometers
- 1304.859 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).
Time difference and current local times
The time difference between Houston and Great Falls is 1 hour. Great Falls is 1 hour behind Houston.
Great Falls, MT
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 180 kg (396 pounds).
Frequent Flyer Miles Calculator
Houston (HOU) → Great Falls (GTF).