america to australia shipping cost varies depending on the size, weight, and service selected. The cost of shipping a package from the U.S. to Australia depends on the shipping carrier, the type of service (e.g., standard, express), and the size and weight of the item. For instance, USPS, UPS, and FedEx all provide international shipping services to Australia with varying delivery times and costs. Typically, USPS offers more affordable options, such as First-Class International or Priority Mail International, while UPS and FedEx offer expedited services at higher rates.