How far is Watertown, SD, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Watertown (Watertown Regional Airport) is 703 miles / 1132 kilometers / 611 nautical miles.
The driving distance from Great Falls (GTF) to Watertown (ATY) is 886 miles / 1426 kilometers, and travel time by car is about 15 hours 53 minutes.
Great Falls International Airport – Watertown Regional Airport
Search flights
Distance from Great Falls to Watertown
There are several ways to calculate the distance from Great Falls to Watertown. Here are two standard methods:
Vincenty's formula (applied above)- 703.407 miles
- 1132.024 kilometers
- 611.244 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- 701.539 miles
- 1129.018 kilometers
- 609.621 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 Watertown?
The estimated flight time from Great Falls International Airport to Watertown Regional Airport is 1 hour and 49 minutes.
What is the time difference between Great Falls and Watertown?
Flight carbon footprint between Great Falls International Airport (GTF) and Watertown Regional Airport (ATY)
On average, flying from Great Falls to Watertown generates about 125 kg of CO2 per passenger, and 125 kilograms equals 276 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 Watertown
See the map of the shortest flight path between Great Falls International Airport (GTF) and Watertown Regional Airport (ATY).
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 | Watertown Regional Airport |
|---|---|
| City: | Watertown, SD |
| Country: | United States |
| IATA Code: | ATY |
| ICAO Code: | KATY |
| Coordinates: | 44°54′50″N, 97°9′16″W |