Priority Mail Flat Rate

 

Our Flat Rate options make shipping with USPS even easier.  With Flat Rates, you pay one rate no matter the weight1 or where the package is going making our Flat Rate options A Simpler Way® to ship a package. You get delivery in 1, 2, or 3 business days2 based on where your package started and where it’s being sent, free boxes and envelopes, free Package Pickup* at your home or business, USPS Tracking™, and limited free insurance coverage against loss or damage. Plus, when you ship online, you’ll save even more.

Image of Priority Mail® Boxes

Features

  • No weighing or calculating needed1
  • Free Package Pickup3
  • Free USPS Tracking when you ship online and at retail
  • Includes up to $50 in insurance coverage for mailpieces with barcodes4
  • Delivery within 1, 2, or 3 business days2 based on where your package started and where it’s being sent
  • Saturday delivery and residential delivery at no extra charge5

Downloadable Pricing File
Priority Mail - Retail

Compare other USPS® mailing and shipping services ›

 

1 For mailable items up to 70 lbs.
2 Based on origin and destination. Expected delivery day printed on receipt or provided at checkout.
3 For details on free Package Pickup, go to usps.com/pickup.
4 Some restrictions apply. Visit usps.com/makingprioritymailbetter for details.
5 Except if Saturday is a national holiday. Priority Mail Express™ service may be available for an added charge.

Service/Option

Size

Great for…

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Letter Envelopes

12 1/2" x 9 1/2"

Letters
Documents
Manuscripts


Gift Card Envelopes

10" x 7"

Oversized Greeting Cards, Gift Cards


Window Envelopes

10" x 5"

Pre-addressed Envelopes


Small Envelopes

10" x 6"

Small Documents

Passports


Padded Envelopes

12 1/2" x 9 1/2"

Clothing

Books

Boxed Jewelry


Legal Envelopes

15" x 9 1/2"

Legal Documents


Small Box

Outside:
8 11/16" x 5 7/16" x 1 3/4"

Inside:
8 5/8" x 5 3/8" x 1 5/8"

Brochures

Small Electronics


Medium Box 1

Outside:
11 1/4" x 8 3/4" x 6"

Inside:

11" x 8 1/2" x 5 1/2"

Office Supplies

Shoes


Medium Box 2

Outside:
14" x 12" x 3 1/2"

Inside:

13 5/8" x 11 7/8" x 3 3/8"

Office Supplies

Shoes


Large Box

Outside:
12 1/4" x 12 1/4" x 6"

Inside:

12" x 12" x 5 1/2"

Laptop Computers, Gifts, etc.


APO/FPO/DPO Large Box

Outside:
12 1/4" x 12 1/4" x 6"

Inside:

12" x 12" x 5 1/2"

Sending gifts to the troops


Large Board
Game Box

Outside:
24 1/16" x 11 7/8" x 3 1/8"

Inside:

23 11/16" x 11 3/4" x 3"

Board Games


Prepaid Priority Mail Flat Rate Packaging

Various sizes available

 


Learn More


Priority Mail Flat Rate® Shipping. Get free Priority Mail® supplies.  Image of Priority Mail boxes and envelopes.Can You Ship It? Find out everything you need to know before shipping a package. Go. Image of a lamp on top of a shipping box.Ship Online. Print a label with postage. Image of a printer with shipping label and box