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

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.

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