How long does it take for a letter mailed in Buffalo NY to reach Hamilton Ont?

Typically, a letter mailed from Buffalo, NY, to Hamilton, ON, can take anywhere from 1 to 3 business days for delivery, depending on the mailing service used and any potential customs processing. Factors such as weather conditions and holidays may also affect the delivery time. It's advisable to check with the postal service for the most accurate estimates based on current conditions.