How far is Fort Smith from St Louis?
There are several ways to calculate distances between St Louis and Fort Smith. Here are two common methods:Vincenty's formula (applied above)
- 322.715 miles
- 519.359 kilometers
- 280.431 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
- 322.698 miles
- 519.332 kilometers
- 280.417 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).
Estimated flight time from St. Louis Lambert International Airport (STL) to Fort Smith Regional Airport (FSM) is 1 hour 6 minutes.
Time difference and current local times
There is no time difference between St Louis and Fort Smith.
St Louis, MO
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 70 kg (155 pounds).
St Louis to Fort Smith flight map.
Frequent Flyer Miles Calculator
St Louis (STL) → Fort Smith (FSM).