what is the cheapest way to ship a package The cheapest way to ship a package depends on factors like size, weight, and destination. For smaller, lighter packages, USPS First-Class Mail is typically the most affordable option. For larger or heavier items, USPS Ground, UPS Ground, or FedEx Ground may offer competitive rates. International shipping costs can vary, but USPS First-Class Package International Service is often the most budget-friendly option for lightweight parcels. Comparing rates using each carrier’s shipping calculator can help find the best deal for your shipment.