There are
949 mi
from Joliet, IL to Opelousas, LA
That's the driving distance. It would take 17 hours 28 mins to go from Joliet, Illinois to Opelousas, Louisiana.
The flight distance (direct flight from Joliet, IL to Opelousas, LA) is 791.39 mi.
949 mi = 1,526.83 kms