Map of flight path and driving directions from Spokane to Great Falls.
Shortest flight path between Spokane International Airport (GEG) and Great Falls International Airport (GTF).
How far is Great Falls from Spokane?
There are several ways to calculate distances between Spokane and Great Falls. Here are two common methods:Vincenty's formula (applied above)
- 288.331 miles
- 464.024 kilometers
- 250.553 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
- 287.484 miles
- 462.661 kilometers
- 249.817 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).
Time difference and current local times
The time difference between Spokane and Great Falls is 1 hour. Great Falls is 1 hour ahead of Spokane.
Great Falls, MT
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 67 kg (149 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Great Falls (GTF).