least expensive shipping method

least expensive shipping method is usually USPS Ground Advantage for domestic packages under 70 lbs, especially when speed isn’t a priority. For lightweight international shipments, USPS First-Class International is cheapest, though slower. Flat-rate boxes help for heavy small items. Consolidated shipping platforms like Pirate Ship or Shippo offer access to deeply discounted commercial rates. For large or multiple parcels, LTL freight or regional couriers may be more cost-effective than standard parcel carriers. Always compare rates before choosing.