How much does it cost to mail a letter from CT to ON Canada?

As of my last update, the cost to mail a letter from Connecticut (CT) to Ontario (ON), Canada, using USPS starts at around $1.40 for a standard letter weighing up to one ounce. Prices can increase based on weight, dimensions, and any additional services like tracking. It's advisable to check the USPS website or visit a local post office for the most current rates, as they can vary.