There are
933 mi
from Lewisville, TX to Deerfield, IL
That's the driving distance. It would take 17 hours 30 mins to go from Lewisville, Texas to Deerfield, Illinois.
The flight distance (direct flight from Lewisville, TX to Deerfield, IL) is 804.13 mi.
933 mi = 1,501.32 kms