what’s the cheapest way to send a package depends on several factors, including the size, weight, destination, and urgency of the package. For domestic shipments, USPS First-Class Mail is often the most affordable option for lightweight packages, starting at just a few dollars. For heavier items, USPS Ground or UPS Ground services can offer affordable rates. International shipments may require additional services like Priority Mail International, with USPS often providing some of the most cost-effective rates for international delivery, depending on the destination.