There are
1,852 mi
from Overland Park, KS to Seatac, WA
That's the driving distance. It would take 1 day 8 hours to go from Overland Park, Kansas to Seatac, Washington.
The flight distance (direct flight from Overland Park, KS to Seatac, WA) is 1,500.13 mi.
1,852 mi = 1.61 kms