There are
1,114 mi
from Palmdale, CA to Seatac, WA
That's the driving distance. It would take 21 hours 12 mins to go from Palmdale, California to Seatac, Washington.
The flight distance (direct flight from Palmdale, CA to Seatac, WA) is 915.79 mi.
1,114 mi = 1.61 kms