There are
1,390 mi
from Deerfield Beach, FL to Dekalb, IL
That's the driving distance. It would take 1 day 1 hour to go from Deerfield Beach, Florida to Dekalb, Illinois.
The flight distance (direct flight from Deerfield Beach, FL to Dekalb, IL) is 1,185.11 mi.
1,390 mi = 1.61 kms