Air Miles Calculator

Distance between St Louis, MO (STL) and Great Falls, MT (GTF)

Distance from St Louis to Great Falls (St. Louis Lambert International Airport – Great Falls International Airport) is 1216 miles / 1956 kilometers / 1056 nautical miles.

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).

Flight duration

Estimated flight time from St. Louis Lambert International Airport (STL) to Great Falls International Airport (GTF) is 2 hours 48 minutes.

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.

Time Difference

St Louis
Great Falls

St Louis, MO

 CST

Great Falls, MT

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 162 kg (357 pounds).

Airport information


A St. Louis Lambert International Airport
City: St Louis, MO
Country: United States Flag of United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″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

Map

St Louis to Great Falls flight map.

Frequent Flyer Miles Calculator

St Louis (STL) → Great Falls (GTF).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1216
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1216

Round trip?