There are
1,106 mi
from Katy, TX to Algonquin, IL
That's the driving distance. It would take 20 hours 48 mins to go from Katy, Texas to Algonquin, Illinois.
The flight distance (direct flight from Katy, TX to Algonquin, IL) is 952.39 mi.
1,106 mi = 1,779.91 kms