There are
1,566 mi
from Allentown, PA to Katy, TX
That's the driving distance. It would take 1 day 4 hours to go from Allentown, Pennsylvania to Katy, Texas.
The flight distance (direct flight from Allentown, PA to Katy, TX) is 1,364.86 mi.
1,566 mi = 1.61 kms