is usps cheapest way to ship is a common question for individuals and small businesses trying to save on logistics. For small, lightweight packages—especially under 1 lb—USPS First-Class and Flat Rate options are typically the most economical. USPS also provides free packaging materials and scheduled pickups, making it convenient. However, for heavier or time-sensitive shipments, comparing rates with UPS or FedEx may yield better value. Regional Rate boxes and commercial discounts can further reduce USPS shipping costs.