There are
646 mi
from Lewisville, TX to Paducah, KY
That's the driving distance. It would take 11 hours 31 mins to go from Lewisville, Texas to Paducah, Kentucky.
The flight distance (direct flight from Lewisville, TX to Paducah, KY) is 550.27 mi.
646 mi = 1,040.16 kms