There are
796 mi
from Deerfield Beach, FL to Picayune, MS
That's the driving distance. It would take 14 hours 35 mins to go from Deerfield Beach, Florida to Picayune, Mississippi.
The flight distance (direct flight from Deerfield Beach, FL to Picayune, MS) is 650.30 mi.
796 mi = 1,281.23 kms