Map of flight path and driving directions from Chicago to Fort Smith.
Shortest flight path between Chicago Midway International Airport (MDW) and Fort Smith Regional Airport (FSM).
How far is Fort Smith from Chicago?
There are several ways to calculate distances between Chicago and Fort Smith. Here are two common methods:Vincenty's formula (applied above)
- 570.785 miles
- 918.590 kilometers
- 495.999 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
- 570.831 miles
- 918.664 kilometers
- 496.039 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 Chicago and Fort Smith.
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 109 kg (240 pounds).
Frequent Flyer Miles Calculator
Chicago (MDW) → Fort Smith (FSM).