Rate boxes are easy-to-use and also USPS tracking having cost-effective shipping option. You can easily ship like the experts by just knowing the Flat Rate box sizes, prices, and how it works before you buy. No weighing or calculating needed up to 70 lbs. Flat Rate offers one rate to any state. Priority Mail Flat Rate is 1 to 3-day shipping service provided by the U.S. Postal Service (USPS) that features one flat rate for delivery of a package or envelope to its destination. Except for Priority Mail International Flat Rate pricing, USPS tracking International packages are based on weight and destination country. Calculate expected shipping costs for international shipments using the International Price Calculator. Whether you’re shipping to Canada or Mexico or further away, estimate shipping costs now.
- Calculate Postcard price
- View Flat Rate Envelopes
- View Flat Rate Boxes
- Calculate price based on Shape and Size
Track in real time packages Via USPS Tracking.
Flat Rate Envelope
- $21.98 commercial base
- $24.70 at Post Office (retail & online)
Legal Flat Rate Envelope
- $22.09 commercial base
- $24.90 at Post Office (retail & online)
Padded Flat Rate Envelope
- $22.46 commercial base
- $25.40 at Post Office (retail & online)