How far is Harlingen, TX, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Harlingen (Valley International Airport) is 1645 miles / 2648 kilometers / 1430 nautical miles.
The driving distance from Great Falls (GTF) to Harlingen (HRL) is 1960 miles / 3155 kilometers, and travel time by car is about 36 hours 10 minutes.
Great Falls International Airport – Valley International Airport
Search flights
Distance from Great Falls to Harlingen
There are several ways to calculate the distance from Great Falls to Harlingen. Here are two standard methods:
Vincenty's formula (applied above)- 1645.240 miles
- 2647.758 kilometers
- 1429.675 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- 1647.007 miles
- 2650.601 kilometers
- 1431.210 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 Great Falls to Harlingen?
The estimated flight time from Great Falls International Airport to Valley International Airport is 3 hours and 36 minutes.
What is the time difference between Great Falls and Harlingen?
Flight carbon footprint between Great Falls International Airport (GTF) and Valley International Airport (HRL)
On average, flying from Great Falls to Harlingen generates about 189 kg of CO2 per passenger, and 189 kilograms equals 416 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Great Falls to Harlingen
See the map of the shortest flight path between Great Falls International Airport (GTF) and Valley International Airport (HRL).
Airport information
| Origin | Great Falls International Airport |
|---|---|
| City: | Great Falls, MT |
| Country: | United States  |
| IATA Code: | GTF |
| ICAO Code: | KGTF |
| Coordinates: | 47°28′55″N, 111°22′15″W |
| Destination | Valley International Airport |
|---|---|
| City: | Harlingen, TX |
| Country: | United States |
| IATA Code: | HRL |
| ICAO Code: | KHRL |
| Coordinates: | 26°13′42″N, 97°39′15″W |