There are
590 mi
from Chattanooga, TN to Des Plaines, IL
That's the driving distance. It would take 11 hours 37 mins to go from Chattanooga, Tennessee to Des Plaines, Illinois.
The flight distance (direct flight from Chattanooga, TN to Des Plaines, IL) is 502.38 mi.
590 mi = 949.88 kms