Priority Mail International Flat Rate Envelope and normal shipping envelope

Priority Mail International® is the cheapest way to ship heavy packages internationally with USPS®

If your package weighs more than 4 pounds, Priority Mail International is the cheapest way to ship internationally through the Postal Service.

Cardboard box on a postage scaleShipping a box with USPS Priority Mail International
  • 📦

    The cheapest way to ship 4+ lbs internationally

    Priority Mail International is the cheapest way to ship heavier packages internationally with USPS®.

  • 6 to 10 day delivery, depending on the country

    Delivery is made by the receiving country's postal service within 6-10 business days, depending on the destination.

  • 🗺

    Includes USPS package tracking

    Priority Mail International includes full tracking from door-to-door, so you can keep an eye on your shipments.

  • 🗝

    Simple customs form included on the label

    Pirate Ship makes international shipping simple, with a customs form that's printed on the shipping label.

  • 💥

    $200 insurance included for free

    All Priority Mail International postage purchased with Pirate Ship includes $200 of insurance from USPS for free.

  • 🤑

    Save up to 9% on PMI with Pirate Ship

    Commercial Pricing for Priority Mail International will save you up to 9% compared to retail prices.

The cheapest Priority Mail International shipping rates

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There are two pricing levels for Priority Mail International: Retail and Commercial. Like all USPS services, Pirate Ship passes-through the cheapest pricing available for Priority Mail International, so you'll get Commercial Pricing no matter your volume.

Priority Mail International shipping rates depend on the weight and destination country (or Flat Rate packaging type, if you're shipping Flat Rate). Each country is assigned a price group.

USPS hands off Priority Mail International shipments at the border, so your recipient's local postal service will make the final delivery. It generally takes 6-10 business days, depending on the speed of the destination country.

Use your own packaging, or use a Priority Mail International Flat Rate box or envelope

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You can ship your own regular kraft box, envelope, or custom packaging with Priority Mail International, weighing up to 70 lbs (some countries have lower limits).

You can also use the Flat Rate Boxes or Envelopes that are available at the Post Office or from USPS.com/supplies.

There are different maximum weights for Priority Mail International Flat Rate packaging:

  • Priority Mail International Flat Rate Envelopes – Maximum weight: 4 lbs
  • Priority Mail International Small Flat Rate Box – Maximum weight: 4 lbs
  • Priority Mail International Medium Flat Rate Box – Maximum weight: 20 lbs
  • Priority Mail International Large Flat Rate Box – Maximum weight: 20 lbs

Start shipping with Priority Mail International

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