There are
957 mi
from Flower Mound, TX to Waukegan, IL
That's the driving distance. It would take 18 hours 4 mins to go from Flower Mound, Texas to Waukegan, Illinois.
The flight distance (direct flight from Flower Mound, TX to Waukegan, IL) is 819.37 mi.
957 mi = 1,540.93 kms