What’s the difference between priority mail and ground advantage lies in their delivery speed, cost, and shipping methods. USPS Priority Mail offers faster delivery, typically between 1 to 3 business days, and includes benefits such as tracking and up to $100 insurance coverage. It is ideal for time-sensitive shipments. On the other hand, USPS Ground Advantage is a more economical shipping service, designed for less urgent deliveries. Ground Advantage is often used for larger, heavier packages and offers more affordable rates compared to Priority Mail, with delivery taking a bit longer, usually 2 to 5 business days, depending on the distance. The choice between these two services largely depends on how quickly you need the item delivered and your budget.