Map of flight path and driving directions from Oklahoma City to Fort Smith.
Shortest flight path between Will Rogers World Airport (OKC) and Fort Smith Regional Airport (FSM).
How far is Fort Smith from Oklahoma City?
There are several ways to calculate distances between Oklahoma City and Fort Smith. Here are two common methods:Vincenty's formula (applied above)
- 182.621 miles
- 293.900 kilometers
- 158.693 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
- 182.212 miles
- 293.242 kilometers
- 158.338 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).
Time difference and current local times
There is no time difference between Oklahoma City and Fort Smith.
Oklahoma City, OK
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 52 kg (114 pounds).
Frequent Flyer Miles Calculator
Oklahoma City (OKC) → Fort Smith (FSM).