There are
1,123 mi
from Dayton, OH to Friendswood, TX
That's the driving distance. It would take 20 hours 37 mins to go from Dayton, Ohio to Friendswood, Texas.
The flight distance (direct flight from Dayton, OH to Friendswood, TX) is 942.48 mi.
1,123 mi = 1.61 kms