There are
883 mi
from Salinas, CA to Seatac, WA
That's the driving distance. It would take 17 hours 1 min to go from Salinas, California to Seatac, Washington.
The flight distance (direct flight from Salinas, CA to Seatac, WA) is 745.32 mi.
883 mi = 1,421.24 kms