There are
855 mi
from Danbury, CT to Bourbonnais, IL
That's the driving distance. It would take 15 hours 55 mins to go from Danbury, Connecticut to Bourbonnais, Illinois.
The flight distance (direct flight from Danbury, CT to Bourbonnais, IL) is 748.12 mi.
855 mi = 1,375.79 kms