is first class or priority mail faster is a common comparison when selecting USPS services for shipping. Priority Mail is typically faster than First-Class Mail, with delivery times of 1–3 business days compared to 2–5 business days for First-Class Mail. Priority Mail also offers additional features like insurance and tracking, making it ideal for more valuable or time-sensitive packages. Shoppers and e-commerce sellers need to choose the right service based on the delivery speed, cost, and level of service required.