Air Miles Calculator

Distance between Houston, TX (HOU) and Great Falls, MT (GTF)

Flight distance from Houston to Great Falls (Houston William P. Hobby Airport – Great Falls International Airport) is 1501 miles / 2416 kilometers / 1304 nautical miles. Estimated flight time is 3 hours 20 minutes.

Driving distance from Houston (HOU) to Great Falls (GTF) is 1815 miles / 2921 kilometers and travel time by car is about 32 hours 2 minutes.

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).

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 Great Falls International Airport
City: Great Falls, MT
Country: United States Flag of United States
IATA Code: GTF
ICAO Code: KGTF
Coordinates: 47°28′55″N, 111°22′15″W

Time difference and current local times

The time difference between Houston and Great Falls is 1 hour. Great Falls is 1 hour behind Houston.

Time Difference

Houston, TX

 CST

Great Falls, MT

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 180 kg (396 pounds).

Frequent Flyer Miles Calculator

Houston (HOU) → Great Falls (GTF).

Distance:
1501
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1501

Round trip?