Map of flight path and driving directions from Watertown to Fort Smith.
Shortest flight path between Watertown International Airport (ART) and Fort Smith Regional Airport (FSM).
How far is Fort Smith from Watertown?
There are several ways to calculate distances between Watertown and Fort Smith. Here are two common methods:Vincenty's formula (applied above)
- 1142.146 miles
- 1838.106 kilometers
- 992.498 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
- 1140.560 miles
- 1835.554 kilometers
- 991.120 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
The time difference between Watertown and Fort Smith is 1 hour. Fort Smith is 1 hour behind Watertown.
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 159 kg (350 pounds).
Frequent Flyer Miles Calculator
Watertown (ART) → Fort Smith (FSM).