priority mail time for delivery varies depending on the shipping destination. USPS Priority Mail service typically delivers packages within 1-3 business days, based on the origin and destination locations. This service is available for packages weighing up to 70 lbs and includes benefits such as tracking, delivery updates, and a money-back guarantee if the package is not delivered within the specified time frame. Priority Mail offers faster delivery than standard First-Class Mail, making it a popular choice for businesses and individuals who need quicker shipping without paying for express services like Priority Mail Express.