Calculations with different methods
- 656.774 miles
- 1056.975 kilometers
- 570.721 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
- 655.406 miles
- 1054.774 kilometers
- 569.532 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from San Luis Valley Regional Airport (ALS) to Fort Smith Regional Airport (FSM) is 1 hour 44 minutes.
Time difference and current local times
The time difference between Alamosa and Fort Smith is 1 hour. Fort Smith is 1 hour ahead of Alamosa.
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 108 kg (238 pounds).
Alamosa to Fort Smith flight map.
Frequent Flyer Miles Calculator
Alamosa (ALS) → Fort Smith (FSM).