There are
1,715 mi
from Missoula, MT to Frankfort, IN
That's the driving distance. It would take 1 day 5 hours to go from Missoula, Montana to Frankfort, Indiana.
The flight distance (direct flight from Missoula, MT to Frankfort, IN) is 1,441.53 mi.
1,715 mi = 1.61 kms