How far is Fort Smith from Washington D.C.?
There are several ways to calculate distances between Washington D.C. and Fort Smith. Here are two common methods:Vincenty's formula (applied above)
- 985.837 miles
- 1586.550 kilometers
- 856.669 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
- 983.791 miles
- 1583.258 kilometers
- 854.891 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 Ronald Reagan Washington National Airport (DCA) to Fort Smith Regional Airport (FSM) is 2 hours 21 minutes.
Time difference and current local times
The time difference between Washington D.C. and Fort Smith is 1 hour. Fort Smith is 1 hour behind Washington D.C..
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 150 kg (330 pounds).
Washington D.C. to Fort Smith flight path
Shortest flight path between Ronald Reagan Washington National Airport (DCA) and Fort Smith Regional Airport (FSM).
Frequent Flyer Miles Calculator
Washington D.C. (DCA) → Fort Smith (FSM).