There are
2,844 mi
from Cary, NC to Seatac, WA
That's the driving distance. It would take 2 days 2 hours to go from Cary, North Carolina to Seatac, Washington.
The flight distance (direct flight from Cary, NC to Seatac, WA) is 2,353.27 mi.
2,844 mi = 3.22 kms