UPS is often more expensive than USPS due to fees and surcharges, especially when it comes to shipping smaller packages. Generally, USPS offers much better rates when shipping smaller packages of less than two pounds. UPS typically is a better choice when shipping larger, heavier packages by offering superior value.
What is the cheapest shipping method?
Use flat-rate shipping where possible—flat-rate shipping will almost always be the best value for money, especially for domestic delivery. Flat-rate shipping means that you can predict prices more accurately. No matter what kind of parcel you have or what dimensions or weight it is, the price will always be the same.
Which is cheaper UPS or USPS for 5 lb package?
Rates are based on the total actual weight or the total dimensional weight of all packages in a shipment, whichever is greater.