USPS Flat Rate (Domestic) Box Sizes & Prices

USPS Flat Rate (Domestic) allows merchants to ship items for a fixed price, irregardless of weight when using specific packaging.

The rates below are available when you sign up for an Easyship account today.

USPS Priority Mail Domestic Flat Rate

Package Type
Price
Flat Rate Envelope
12 1/2" x 9 1/2"
$7.15
Gift Card Flat Rate Envelope
10" x 7"
$7.15
Window Flat Rate Envelope
10" x 6"  or  12 1/2" x 9 1/2"
$7.15
Small Flat Rate Envelope
10" x 6"
$7.15
Padded Flat Rate Envelope
12 1/2" x 9 1/2"
$7.75
Legal Flat Rate Envelope
15" x 9 1/2"
$7.45
Small Flat Rate Box
8 11/16" x 5 7/16" x 1 3/4"
$7.65
Medium Flat Rate Box – 1 (top-loading)
11 1/4" x 8 3/4" x 6"
$13.20
Medium Flat Rate Box – 2 (side-loading)
14" x 12" x 3 1/2"
$13.20
Large Flat Rate Box
12 1/4" x 12 1/4" x 6"
$18.30
APO/FPO/DPO Flat Rate Box
12 1/4" x 12 1/4" x 6"
$16.80
Large Flat Rate Board Game Box
24 1/16" x 11 7/8" x 3 1/8"
$18.30

Shipping with USPS Flat Rate (Domestic)

Ratings

Based on key criteria from users and recipients, USPS Flat Rate (Domestic) has the following ratings

  • Support: 3/5
  • Tracking: 2/5
  • Speed: 3/5
  • Overall: 3/5
Market Served: Domestic
  • What is USPS Flat Rate (Domestic)?

    • 1 to 3 day shipping service provided by the U.S. Postal Service (USPS). Pricing is fixed per box size (does not consider weight) for any destination. Boxes are available in multiple sizes. All are available through the Easyship platform.
  • Pricing

    • Budget

    * Compared to other courier services available on the Easyship platform

  • Pricing Calculation

    • By volumetric weight
  • Return Policy

    • cross-bold-red No
  • Insurance Policy

    • Insurance is not offered by USPS Flat Rate (Domestic)

    *Easyship offers comprehensive insurance sold separately

  • Handover Type

    • Offers free pickup
    • No dropoff
  • Import Tax Handling

    • Only Receiver Can Pay the Taxes
  • Schedule Delivery

    • check-bold-green Offered
  • Delivery Attempts

    • Up to Two Attempts
  • Maximum Measurements

    • Height: -
    • Length: -
    • Width: -
    • Weight: 30 kg
    • Volume: -
  • Prohibited Items

    • Stand-Alone Batteries are not allowed

UPS, the UPS brandmark, UPS Ready®, and the color brown are trademarks of United Parcel Service of America, Inc. All Rights Reserved.