However, use your own envelope for packages weighing exactly 1 lb.USPS Flat Rate Envelopes are almost ALWAYS the cheapest option.We ran the numbers to find out exactly when you should use a Flat Rate box and when you should use your own packaging and ship via USPS Priority Mail weight-based or Cubic instead. Generally speaking, the USPS Flat Rate boxes are a great option for heavy items that are traveling long distances. Which is Cheaper: Flat Rate or Priority Mail? 2023 USPS Priority Mail Flat Rate Shippo vs. 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.

Usps flat rate box prices and sizes