Calculations with different methods
- 373.154 miles
- 600.533 kilometers
- 324.262 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
- 374.110 miles
- 602.071 kilometers
- 325.093 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from George Bush Intercontinental Airport (IAH) to Fort Smith Regional Airport (FSM) is 1 hour 12 minutes.
Time difference and current local times
There is no time difference between Houston and Fort Smith.
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 77 kg (169 pounds).
Houston to Fort Smith flight map.
Frequent Flyer Miles Calculator
Houston (IAH) → Fort Smith (FSM).