is first class mail faster than priority depends on the context of your shipment. Generally, Priority Mail from USPS is faster than First-Class Mail. Priority Mail offers delivery in 1-3 business days, depending on the destination, while First-Class Mail typically takes 3-5 business days for most domestic shipments. Priority Mail also includes additional benefits such as package tracking and insurance, which First-Class Mail does not offer for most shipments. If you need faster delivery or are shipping valuable items, Priority Mail is usually the better option.