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.

Ensure the right rate is selected when you sign up for an Easyship account.

USPS Priority Mail Domestic Flat Rate

Package Type
Package Dimensions
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
Flat Rate Envelope (Express)
12 1/2" x 9 1/2"
$22.75
Legal Flat Rate Envelope (Express)
15" x 9 1/2"
$22.95
Padded Flat Rate Envelope (Express)
12 1/2" x 9 1/2"
$23.25

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:
    3/5
  • Speed:
    5/5
  • Overall:
    3/5
Market Served: Domestic

Common questions about USPS Flat Rate (Domestic)

How does USPS Flat Rate (Domestic) work?

To create a shipment with , you must enter your shipment details (such as address and item details) and purchase a shipping label. Print out your shipping labels and attach to your package. The courier will collect your parcel at the pre-arranged time. From there, will arrange shipment to your final destination.

This whole process can be managed on the Easyship platform.

How do I track a USPS Flat Rate (Domestic) shipment?

You can track shipments using the tracking number for the shipment provided and visiting the USPS website.

How do I contact USPS for a shipment?

When shipping with Easyship you do not need to contact . All the information you need about your shipments is available to you through the Easyship platform. If you want to learn more about you can learn more at their website or calling .

What are the shipping rates for USPS Flat Rate (Domestic)?

Pricing varies based on shipment details and destination.

Signup today for a free Easyship account to see the most accurate rates for and other services we offer.

How long will delivery take for a USPS Flat Rate (Domestic) shipment to United States?

Delivery time varies on origin and destination.

Signup for an Easyship account to see delivery time for all available couriers in your location.

Is there a USPS location near me?

You can find the full list of locations in here.

What can I ship with USPS Flat Rate (Domestic)?

do not have many restrictions on what you can ship, however you should be mindful that things such as alcohol, food & other items are generally restricted to most locations. With ,

Does USPS Flat Rate (Domestic) require a signature on delivery?

offers an optional signature on delivery service. Whether a signature on delivery will be required or not will be decided by the sender at time of shipment creation.

How does USPS Flat Rate (Domestic) work with Easyship?

Easyship will detect when a shipment is eligible for a shipment and show this as an option when preparing shipments. Further details on preparing shipments and obtaining the right boxes can be found here.

©2021 United Parcel Service of America, Inc. UPS, the UPS brand mark and the color brown are trademarks of the United Parcel Service of America, Inc. All rights reserved.