postal service international shipping rates are the costs associated with shipping packages internationally through the postal service, such as USPS (United States Postal Service). International shipping rates are determined based on factors such as the destination country, package size, weight, and the type of service selected. USPS offers several international shipping options, including First-Class Package International, Priority Mail International, and Priority Mail Express International. First-Class Package International is the most economical option for lightweight packages but comes with longer delivery times, typically ranging from 7 to 21 business days, depending on the destination. Priority Mail International provides faster delivery, typically between 6 to 10 business days, and includes tracking and limited insurance. For urgent shipments, USPS offers Priority Mail Express International, with guaranteed delivery in 3 to 5 business days. Rates can vary depending on the specific destination, with additional costs for insurance, tracking, or signature confirmation. To get an accurate price for international shipping, customers can use USPS’s online shipping calculator.