How far is Great Falls, MT, from Washington D.C.?
The distance between Washington D.C. (Washington Dulles International Airport) and Great Falls (Great Falls International Airport) is 1794 miles / 2888 kilometers / 1559 nautical miles.
The driving distance from Washington D.C. (IAD) to Great Falls (GTF) is 2077 miles / 3343 kilometers, and travel time by car is about 38 hours 20 minutes.
Washington Dulles International Airport – Great Falls International Airport
Search flights
Distance from Washington D.C. to Great Falls
There are several ways to calculate the distance from Washington D.C. to Great Falls. Here are two standard methods:
Vincenty's formula (applied above)- 1794.238 miles
- 2887.547 kilometers
- 1559.151 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- 1790.120 miles
- 2880.919 kilometers
- 1555.572 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 Washington D.C. to Great Falls?
The estimated flight time from Washington Dulles International Airport to Great Falls International Airport is 3 hours and 53 minutes.
What is the time difference between Washington D.C. and Great Falls?
Flight carbon footprint between Washington Dulles International Airport (IAD) and Great Falls International Airport (GTF)
On average, flying from Washington D.C. to Great Falls generates about 200 kg of CO2 per passenger, and 200 kilograms equals 440 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Washington D.C. to Great Falls
See the map of the shortest flight path between Washington Dulles International Airport (IAD) and Great Falls International Airport (GTF).
Airport information
| Origin | Washington Dulles International Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States  |
| IATA Code: | IAD |
| ICAO Code: | KIAD |
| Coordinates: | 38°56′40″N, 77°27′20″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 |