There are
1,314 mi
from Flower Mound, TX to Johnstown, PA
That's the driving distance. It would take 23 hours 58 mins to go from Flower Mound, Texas to Johnstown, Pennsylvania.
The flight distance (direct flight from Flower Mound, TX to Johnstown, PA) is 1,123.85 mi.
1,314 mi = 1.61 kms