There are
743 mi
from Allentown, PA to Deerfield, IL
That's the driving distance. It would take 13 hours 57 mins to go from Allentown, Pennsylvania to Deerfield, Illinois.
The flight distance (direct flight from Allentown, PA to Deerfield, IL) is 648.83 mi.
743 mi = 1,196.43 kms