There are
286 mi
from Spokane, WA to Seatac, WA
That's the driving distance. It would take 5 hours 18 mins to go from Spokane, Washington to Seatac, Washington.
The flight distance (direct flight from Spokane, WA to Seatac, WA) is 228.70 mi.
286 mi = 459.90 kms