There are
3,245 mi
from West Palm Beach, FL to Seatac, WA
That's the driving distance. It would take 2 days 9 hours to go from West Palm Beach, Florida to Seatac, Washington.
The flight distance (direct flight from West Palm Beach, FL to Seatac, WA) is 2,688.22 mi.
3,245 mi = 4.83 kms