There are
409 mi
from Dayton, OH to North Tonawanda, NY
That's the driving distance. It would take 7 hours 50 mins to go from Dayton, Ohio to North Tonawanda, New York.
The flight distance (direct flight from Dayton, OH to North Tonawanda, NY) is 357.07 mi.
409 mi = 658.65 kms