Sign up for a free Shippo account, to see live discounted rates and print USPS labels for Flat Rate Boxes. On top of this, Shippo merchants get access to special pricing on Priority Mail Flate Rate services during peak season. What are the 2023 USPS Flat Rate Box Sizes and Prices?Īs you’ll see below, Shippo offers discounted shipping rates when compared to what you’d find at your local Post Office.

Bonus! Determine if a USPS Flat Rate box is the cheapest option for the items you’re looking to ship, since it’s not always the most affordable choice.Sign up for a free Shippo account to access the best rates on USPS Flat Rate shipping and print your labels from the comfort of your office or home.You have to use the branded Flat Rate boxes to get the Flat Rate shipping price, and you can order them online or pick them up at your local Post Office. Order free Flat Rate boxes from the USPS.To ship with this service, follow these easy steps: The USPS Priority Mail Flat Rate service will ship your package anywhere in the U.S. You can easily ship like the experts just know the USPS Flat Rate box sizes, prices, and how it works before you buy. USPS Priority Mail Flat Rate boxes are an easy-to-use, cost-effective shipping option.

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