where is the cheapest place to ship a package depends on the size, weight, distance, and delivery urgency. USPS typically offers the most affordable rates for small or lightweight packages, especially with Ground Advantage or First-Class Package services. For larger parcels, comparing rates from UPS, FedEx, and shipping consolidators like Pirate Ship or Shippo can reveal deeper discounts. Additionally, using flat-rate boxes or regional rate services helps reduce costs when shipping within the same zone or across short distances.