There are
1,948 mi
from Missoula, MT to Deridder, LA
That's the driving distance. It would take 1 day 10 hours to go from Missoula, Montana to Deridder, Louisiana.
The flight distance (direct flight from Missoula, MT to Deridder, LA) is 1,561.78 mi.
1,948 mi = 1.61 kms