There are
1,382 mi
from Harlingen, TX to Frankfort, IN
That's the driving distance. It would take 1 day 1 hour to go from Harlingen, Texas to Frankfort, Indiana.
The flight distance (direct flight from Harlingen, TX to Frankfort, IN) is 1,166.29 mi.
1,382 mi = 2,224.32 kms