Priority Mail Express International

Priority Mail Express International Boxes

International Shipping in 3-5 Business Days1

Affordable and fast international delivery to more than 190 countries, plus date-certain service delivery with a money-back guarantee to select destinations.2 Free Priority Mail Express International® shipping supplies are available. Beginning at $44.00 at Post Office™ locations and online.


Flat Rate Pricing3

No weighing or calculating needed. With Flat Rate Envelopes, you pay one rate depending on the destination country.3

Ship Now Priority Mail Express International">


  • Money-back guarantee to select destinations2
  • Delivery in 3 to 5 business days1
  • Free Package Pickup4 service at your home or office
  • Includes USPS Tracking®5
  • Includes up to $100 insurance for non-negotiable document reconstruction and up to $200 insurance for merchandise loss, damage, or missing contents6, 7

Insurance and Extra Services Details


Except for Priority Mail Express International Flat Rate pricing, Priority Mail Express International prices are based on weight and destination country. Calculate expected shipping costs for international shipments using the International Price Calculator.
Calculate a Price

Additional Pricing Information

See Pricing Files
Price List (Retail)
Price List (Commercial Base)

Priority Mail Express International Flat Rate Products

Free Supplies4 Shipping Price From Dimensions Weight Limit
Flat Rate Envelope $44.50 at Post Office (retail & online)
$42.30 commercial base
12 1/2" x 9 1/2" up to 4 lbs
Legal Flat Rate Envelope $44.50 at Post Office (retail & online)
$42.30 commercial base
15" x 9 1/2" up to 4 lbs
Padded Flat Rate Envelope $44.50 at Post Office (retail & online)
$42.30 commercial base
12 1/2" x 9 1/2" up to 4 lbs

Customs Forms

Print your international postage with Click-N-Ship® and our tool creates the customs form for you.

Print a Label

If you just need a customs form, use our online tool to fill out the correct form.

Create a Customs Form

Request a Refund

Submit a refund request for failure of service within 30 days of the mailing date. For refunds for date-certain service, call 1-800-222-1811.

Priority Mail Express International Refund Information


Maximum weight for Priority Mail Express International® is 70 lbs.

Maximum weight for Flat Rate Envelopes is 4 lbs.

Some countries have lower weight restrictions.

View Country-Specific Restrictions



You must be able to seal a Flat Rate Envelope by closing it within the normal folds.

Preparing International Shipments

There are restrictions for mailing restricted, prohibited, and hazardous materials, including cigarettes and smokeless tobacco.

See All Restrictions