How far is Great Falls, MT, from Harlingen, TX?
The distance between Harlingen (Valley International Airport) and Great Falls (Great Falls International Airport) is 1645 miles / 2648 kilometers / 1430 nautical miles.
The driving distance from Harlingen (HRL) to Great Falls (GTF) is 1960 miles / 3154 kilometers, and travel time by car is about 36 hours 10 minutes.
Valley International Airport – Great Falls International Airport
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Distance from Harlingen to Great Falls
There are several ways to calculate the distance from Harlingen to Great Falls. 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 Harlingen to Great Falls?
The estimated flight time from Valley International Airport to Great Falls International Airport is 3 hours and 36 minutes.
What is the time difference between Harlingen and Great Falls?
Flight carbon footprint between Valley International Airport (HRL) and Great Falls International Airport (GTF)
On average, flying from Harlingen to Great Falls 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 Harlingen to Great Falls
See the map of the shortest flight path between Valley International Airport (HRL) and Great Falls International Airport (GTF).
Airport information
| Origin | Valley International Airport |
|---|---|
| City: | Harlingen, TX |
| Country: | United States  |
| IATA Code: | HRL |
| ICAO Code: | KHRL |
| Coordinates: | 26°13′42″N, 97°39′15″W |
| Destination | 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 |