Priority Mail International Flat Rate Envelope and normal shipping envelope

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

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

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 5% on PMI with Pirate Ship

    Commercial Pricing for Priority Mail International® will save you 5% 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.

If you're shipping to Canada, the country is divided into 8 zones with different rates. Which zone applies for your shipment is calculated based off where you're shipping from.

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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