Usps Priority Mail Rates 2024. Priority mail express items, including priority mail express flat rate shipping products, are delivered the next day to most u.s. Expect a 5% average increase, with some rates going up to $3.10 more.
Effective september 16th, usps is adjusting rates for priority mail® and ground advantage®. Expect a 5% average increase, with some rates going up to $3.10 more.