How far is Unalaska, AK, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Unalaska (Unalaska Airport) is 2399 miles / 3861 kilometers / 2085 nautical miles.
Great Falls International Airport – Unalaska Airport
Search flights
Distance from Great Falls to Unalaska
There are several ways to calculate the distance from Great Falls to Unalaska. Here are two standard methods:
Vincenty's formula (applied above)- 2399.190 miles
- 3861.121 kilometers
- 2084.839 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- 2391.940 miles
- 3849.454 kilometers
- 2078.539 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 Unalaska?
The estimated flight time from Great Falls International Airport to Unalaska Airport is 5 hours and 2 minutes.
What is the time difference between Great Falls and Unalaska?
Flight carbon footprint between Great Falls International Airport (GTF) and Unalaska Airport (DUT)
On average, flying from Great Falls to Unalaska generates about 263 kg of CO2 per passenger, and 263 kilograms equals 581 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Great Falls to Unalaska
See the map of the shortest flight path between Great Falls International Airport (GTF) and Unalaska Airport (DUT).
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 | Unalaska Airport |
|---|---|
| City: | Unalaska, AK |
| Country: | United States |
| IATA Code: | DUT |
| ICAO Code: | PADU |
| Coordinates: | 53°54′0″N, 166°32′38″W |