There are
807 mi
from Johnson City, TN to Deerfield Beach, FL
That's the driving distance. It would take 14 hours 59 mins to go from Johnson City, Tennessee to Deerfield Beach, Florida.
The flight distance (direct flight from Johnson City, TN to Deerfield Beach, FL) is 703.22 mi.
807 mi = 1,299.46 kms