Air Miles Calculator

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.

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 Flag of 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 Flag of 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

 MDT

Great Falls, MT

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 116 kg (255 pounds).

Frequent Flyer Miles Calculator

Denver (DEN) → Great Falls (GTF).

Distance:
623
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
623

Round trip?