There are
1,817 mi
from Laredo, TX to Niagara Falls, NY
That's the driving distance. It would take 1 day 8 hours to go from Laredo, Texas to Niagara Falls, New York.
The flight distance (direct flight from Laredo, TX to Niagara Falls, NY) is 1,570.71 mi.
1,817 mi = 1.61 kms