how to ship from us to australia involves selecting an appropriate shipping carrier and method to ensure the safe and timely delivery of goods across the globe. USPS, FedEx, and UPS all offer international shipping options to Australia, with varying rates and delivery times. For cost-effective shipping, USPS Priority Mail International is often the best option for smaller packages, offering reasonable rates and delivery within 6-10 business days. For faster delivery, UPS and FedEx provide expedited services like UPS Worldwide Express or FedEx International Priority, which deliver in 1-3 business days. Always ensure that you have the correct customs paperwork and that the item is eligible for international shipment to avoid delays.