USPS vs. UPS vs. FedEx - Which Carrier is Cheaper in 2021 ...
Jul 23, 2020· With USPS, you can get the boxes for free, and you'll pay a flat rate to ship a package weighing up to 20 pounds anywhere in the U.S. between 1-3 business days. FedEx One Rate also offers free boxes, and does not require you to weigh or measure shipments under 50 pounds with a time-definite 1-, 2-, or 3-day delivery.