There are
656 mi
from Waukegan, IL to Williamsport, PA
That's the driving distance. It would take 12 hours 14 mins to go from Waukegan, Illinois to Williamsport, Pennsylvania.
The flight distance (direct flight from Waukegan, IL to Williamsport, PA) is 563.47 mi.
656 mi = 1,055.44 kms