Distance between Denver, CO (DEN) and Great Falls, MT (GTF)
Flight distance from Denver to Great Falls (Denver International Airport – Great Falls International Airport) is 623 miles / 1003 kilometers / 542 nautical miles. Estimated flight time is 1 hour 40 minutes.
Driving distance from Denver (DEN) to Great Falls (GTF) is 784 miles / 1261 kilometers and travel time by car is about 14 hours 1 minutes.
Calculate Distance
Search by airport name, city or IATA airport code.
Multiple airports
Denver - Great Falls
Map of flight path and driving directions from Denver to Great Falls.
Shortest flight path between Denver International Airport (DEN) and Great Falls International Airport (GTF).
How far is Great Falls from Denver?
There are several ways to calculate distances between Denver and Great Falls. Here are two common methods:
Vincenty's formula (applied above)- 623.497 miles
- 1003.420 kilometers
- 541.804 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.
Haversine formula- 623.367 miles
- 1003.212 kilometers
- 541.691 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).
Airport information
| A | Denver International Airport |
|---|---|
| City: | Denver, CO |
| Country: | United States  |
| IATA Code: | DEN |
| ICAO Code: | KDEN |
| Coordinates: | 39°51′42″N, 104°40′22″W |
| B | 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 |
Time difference and current local times
There is no time difference between Denver and Great Falls.
Time Difference
Denver, CO
Great Falls, MT
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 116 kg (255 pounds).
Frequent Flyer Miles Calculator
Denver (DEN) → Great Falls (GTF).
In total
Round trip?