There are
169 mi
from Beaverton, OR to Seatac, WA
That's the driving distance. It would take 3 hours 24 mins to go from Beaverton, Oregon to Seatac, Washington.
The flight distance (direct flight from Beaverton, OR to Seatac, WA) is 137.80 mi.
169 mi = 272.09 kms