There are
795 mi
from Wilmington, DE to Algonquin, IL
That's the driving distance. It would take 15 hours 1 min to go from Wilmington, Delaware to Algonquin, Illinois.
The flight distance (direct flight from Wilmington, DE to Algonquin, IL) is 685.14 mi.
795 mi = 1,279.57 kms