There are
743 mi
from Vacaville, CA to Seatac, WA
That's the driving distance. It would take 14 hours 19 mins to go from Vacaville, California to Seatac, Washington.
The flight distance (direct flight from Vacaville, CA to Seatac, WA) is 628.77 mi.
743 mi = 1,195.96 kms