There are
1,583 mi
from Austin, TX to Niagara Falls, NY
That's the driving distance. It would take 1 day 5 hours to go from Austin, Texas to Niagara Falls, New York.
The flight distance (direct flight from Austin, TX to Niagara Falls, NY) is 1,358.14 mi.
1,583 mi = 1.61 kms