Shipping Cost from Thornton, Colorado to Phoenix, Arizona

50 lb package shipping costs: Summary The cheapest way to ship a 50 lb package using Express services is the USPS Priority Mail Express 1-Day, which costs $374.75. The average cost to ship a 50 lb package using Ground services is $83.32. The average cost to ship a 50 lb package using Express services is $462.78.

Shipping a 20 lb package costs roughly $20-$40 for ground services (UPS, FedEx, USPS Ground Advantage) for shorter distances, but can range from $13 to over $100+ for faster or international options, depending heavily on the carrier, speed, and distance (zone). USPS Ground Advantage is often economical, while faster FedEx/UPS options like Next Day Air become much pricier, and sometimes splitting into lighter boxes (under 20 lbs) can be cheaper with USPS.

UPS charges based on the greater of the package's actual weight or its dimensional weight (DIM weight), whichever results in a higher cost. DIM weight accounts for size (length x width x height) using a specific formula (dividing volume by a factor like 166 for international). This means a large but light item might cost more due to its volume, while a heavy but compact item is charged by its actual weight.