There are
2,798 mi
from Wilmington, DE to Tukwila, WA
That's the driving distance. It would take 2 days 1 hour to go from Wilmington, Delaware to Tukwila, Washington.
The flight distance (direct flight from Wilmington, DE to Tukwila, WA) is 2,359.76 mi.
2,798 mi = 3.22 kms