Map of flight path and driving directions from St Louis to Great Falls.
Shortest flight path between St. Louis Lambert International Airport (STL) and Great Falls International Airport (GTF).
How far is Great Falls from St Louis?
There are several ways to calculate distances between St Louis and Great Falls. Here are two common methods:Vincenty's formula (applied above)
- 1215.553 miles
- 1956.243 kilometers
- 1056.287 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
- 1213.372 miles
- 1952.732 kilometers
- 1054.391 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 St Louis and Great Falls is 1 hour. Great Falls is 1 hour behind St Louis.
St Louis, MO
Great Falls, MT
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 162 kg (357 pounds).
Frequent Flyer Miles Calculator
St Louis (STL) → Great Falls (GTF).