There are
1,161 mi
from Deerfield Beach, FL to Festus, MO
That's the driving distance. It would take 21 hours 37 mins to go from Deerfield Beach, Florida to Festus, Missouri.
The flight distance (direct flight from Deerfield Beach, FL to Festus, MO) is 1,017.33 mi.
1,161 mi = 1.61 kms