Priority Mail Express

Next-Day to 2-Day Guarantee1 & Flat Rate Pricing2

Priority Mail Express® service provides next-day to 2–day delivery service by 6 PM with a money–back guarantee1. You get competitive prices and fast delivery every day, all year, with limited exceptions, to most U.S. addresses and PO Boxes3. Priority Mail Express Flat Rate lets you ship packages up to 70 lbs to any state at the same price. Mail from Post Office locations or online from your home or business. Prices start at $30.45 at a Post Office. (Ship online with enhanced Click-N-Ship® service and get lower Commercial Rates.)

Ship Now with Priority Mail Express Priority Mail Express Prices

For Priority Mail Express Items Addressed to or from Alaska and Hawaii: As of August 1, 2023, USPS will no longer process refund requests for guaranteed service on these items. Refund requests for loss will still be processed. Read More

Features & Pricing

  • Fastest delivery times: next day to 2 days with a money-back guarantee1
  • Sunday and holiday delivery available in many major markets for an additional fee
  • Free Package Pickup4 service at your home or office
  • Includes USPS Tracking® and up to $100 of insurance5 with most shipments6
  • Price includes proof of delivery signature record (if requested at time of purchase)
  • USPS Label Delivery service: Even if you don't have a printer, you can still ship online using enhanced Click-N-Ship—for an extra $1.25 per label, we'll print an outbound label and deliver it to you. (Businesses can also request return labels for their customers.)

Weight, Size, & Shape Requirements

Use USPS Priority Mail Express Flat Rate Envelopes and pay one price:

  • Pay the same price for mailpieces weighing up to 70 lbs going anywhere in the U.S.
  • When sealing a Priority Mail Express Flat Rate Envelope, the container flaps must be able to close within the normal folds.

Use USPS Priority Mail Express Mailing Boxes and pay by weight and zone (distance):

  • Pay for your package based on how much it weighs and how far it’s going (the zone). Maximum weight is 70 lbs.
  • Use USPS Priority Mail Express Mailing Boxes that come in standard sizes so you don’t have to worry about measuring them.

Use your own box and pay by weight and zone (distance):

  • Pay for your package based on how much it weighs and how far it’s going (the zone). Maximum weight is 70 lbs.
  • You’ll need to measure your package to make sure it meets the size standards.
  • Maximum combined length and girth (girth is the distance around the thickest part) is 108″. Tips for Measuring Packages
  • Additional Fees:
    • Dimensional (DIM) weight rates apply to large, lightweight packages. If your package is larger than 1 cubic foot (1,728 cubic inches):
      1. Multiply Length x Width x Height and divide by 166 to get the DIM weight in pounds.
      2. If the DIM weight is greater than the actual package weight, you’ll need to pay the DIM weight price.
    • If you give inaccurate dimensions and/or don’t pay the DIM weight rate (when it applies), you’ll pay a dimension-noncompliance fee.
    • Nonstandard Fee: You’ll pay an extra fee for sending a nonstandard size if your package measures:
      • Between 22 and 30 inches long: add $4.00
      • More than 30 inches long: add $18.00
      • More than 2 cubic feet (3,456 cubic inches): add $30.00

TIP: Use the USPS® Price Calculator tool to calculate your domestic postage costs. You'll need to know your package’s weight, shape, and size measurements.

Additional Information

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Mailing Restrictions & Prohibitions

There are specific regulations and standards for mailing restricted, prohibited, and hazardous materials, including cigarettes and smokeless tobacco.

Domestically Restricted & Prohibited Items

Learn more about what items you may and may not mail within the U.S.

Domestic Shipping Prohibitions & Restrictions

Shipping to a Military Post Office (APO/FPO/DPO)

You'll pay domestic prices for packages shipped to a Military Post Office (APO/FPO/DPO), but these destinations require a customs form and have specific restrictions.

Military & Diplomatic Mail

Learn more about how to send mail and packages to loved ones overseas.

Sending APO/FPO/DPO Mail

Requesting a Refund

If your shipment didn't arrive on the guaranteed delivery date or time (found on your receipt), submit a refund request for failure of service within 30 days of the mailing date.

Find out how to apply and what documents you need to submit for a Priority Mail Express refund.

How to Request a Refund

For Businesses

USPS® understands what's most important to our business customers: speed, affordability, security, and customer service. We help businesses provide these services and resources to your customers at discounted rates.

Note for Business Mailers: As of January 21, 2024, mailers using Priority Mail Express and Priority Mail Express Return services must comply with new rules on the accuracy of the Intelligent Mail® package barcode (IMpb®) on their postage labels. There’s currently a grace period, but starting June 1, 2024, if you fail to meet the barcode quality threshold, you will need to pay a $0.25 per-label noncompliance fee. To learn more, see the PostalPro Industry Alert.

Next-Day Deliveries

Priority Mail Express® next-day delivery is available when you need to get shipments to customers in a hurry.

  • Use the Service Commitments tool to find out when you can expect your package to arrive and whether we can offer a money-back guarantee.
  • Drop-off times vary by Post Office location, but it's easy to find convenient locations when you know the ZIP Codes you're shipping to.

Find a Location

Commercial Pricing

Get discounted rates on business shipping with a couple of options:

  • Use enhanced Click-N-Ship® service to get lower Commercial Rates.
  • A Negotiated Service Agreement (NSA) is available for larger volume shippers who meet the minimum volume requirements.

Returns for Businesses

You can use Priority Mail Express Return as a fast, convenient option for customers who need to send items back. Both outbound and returns include $100 insurance.

USPS Label Delivery

Save on label printing costs; we can print and deliver the label to you for a $1.25 fee (per label). You can also request return labels for your customers. Available through enhanced Click-N-Ship service and USPS Web Tools® APIs.

Priority Mail Express Open & Distribute

Expedite the transportation of your bulk mailings with Priority Mail Express Open & Distribute® (PMEOD). Customers using PMEOD services ship their items in an approved USPS container to an authorized location where USPS opens the container before delivering the contents to their final destinations.

  • Prices are Commercial Rates based on weight and zone to quickly move your mailings at a reasonable cost.
  • Mailings include a special barcoded label, so you can easily track your shipments.

Priority Mail Express Open & Distribute

Manage Incoming Mail

Our cost-effective and convenient mail services help you keep up with your incoming mail and manage your outgoing mail, so you can better focus on growing your business.

Manage Your Business Mail

Helpful Links

Priority Mail Express Flat Rate Products

Bonus: If you ship online with enhanced Click-N-Ship service, you’ll save with lower Commercial Rates.

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Free Supplies7 Shipping Price Dimensions Great For…
Flat Rate Envelope

$26.35 Commercial Pricing

$30.45 at Post Office

12 1/2″ x 9 1/2″

Passports & Passport Applications



Legal Flat Rate Envelope

$26.65 Commercial Pricing

$30.65 at Post Office

15″ x 9 1/2″

Legal Documents

Padded Flat Rate Envelope

$26.85 Commercial Pricing

$31.20 at Post Office

12 1/2″ x 9 1/2″



Boxed Jewelry

1. Exceptions apply. For details, visit the Domestic Mail Manual. Back ^ to legal disclaimer 1
2. Scheduled delivery date depends on origin, destination, and drop-off time. Some restrictions apply. For additional information, visit the Price Calculator. Back ^ to legal disclaimer 2
3.For mailable items up to 70 lbs. Back ^ to legal disclaimer 3
4.For details on free Package Pickup, visit Schedule a Pickup. Back ^ to legal disclaimer 4
5.Available only for certain products and to certain destinations. Restrictions and exclusions apply. For details, visit 609.4.3 (Non-payable Claims), 609 (Filing Indemnity Claims for Loss or Damage), and 503.4 (Insured Mail) of the Domestic Mail Manual. Back ^ to legal disclaimer 5
6.Priority Mail Express shipments with insurance must have an applicable USPS® shipping label to qualify for the included insurance. For shipments valued at more than $100, additional insurance may be available for purchase. Back ^ to legal disclaimer 6
7.Boxes and envelopes are delivered with your regular mail usually within 7 to 10 business days. Back ^ to legal disclaimer 7