How far is Fort Smith from Seattle?
There are several ways to calculate distances between Seattle and Fort Smith. Here are two common methods:Vincenty's formula (applied above)
- 1663.681 miles
- 2677.435 kilometers
- 1445.699 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
- 1661.004 miles
- 2673.127 kilometers
- 1443.373 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 Boeing Field (BFI) to Fort Smith Regional Airport (FSM) is 3 hours 38 minutes.
Time difference and current local times
The time difference between Seattle and Fort Smith is 2 hours. Fort Smith is 2 hours ahead of Seattle.
Fort Smith, AR
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 182 kg (402 pounds).
Seattle to Fort Smith flight path
Shortest flight path between Boeing Field (BFI) and Fort Smith Regional Airport (FSM).
Frequent Flyer Miles Calculator
Seattle (BFI) → Fort Smith (FSM).