There are
1,119 mi
from Glendale, CA to Seatac, WA
That's the driving distance. It would take 21 hours 10 mins to go from Glendale, California to Seatac, Washington.
The flight distance (direct flight from Glendale, CA to Seatac, WA) is 943.64 mi.
1,119 mi = 1.61 kms