There are
2,110 mi
from Fort Smith, AR to Seatac, WA
That's the driving distance. It would take 1 day 12 hours to go from Fort Smith, Arkansas to Seatac, Washington.
The flight distance (direct flight from Fort Smith, AR to Seatac, WA) is 1,656.56 mi.
2,110 mi = 3.22 kms