There are
2,031 mi
from Palatine, IL to Seatac, WA
That's the driving distance. It would take 1 day 11 hours to go from Palatine, Illinois to Seatac, Washington.
The flight distance (direct flight from Palatine, IL to Seatac, WA) is 1,706.87 mi.
2,031 mi = 3,268.04 kms