USPS Priority Mail International 2025 Guide: What It Is, Weight & Size Limits, Tracking, Delivery Times, Costs + Rate Table

Shipping internationally doesn’t have to be confusing or expensive. If you run an online store and want to reach customers outside the U.S., USPS Priority Mail International is a reliable, affordable way to do it.

In this guide, you’ll learn what Priority Mail International is, how it works, how much it costs, and how to use it for your eCommerce business. You’ll also learn how a shipping software platform like Easyship can help you optimize your processes and help you make the right decisions, thereby improving your bottom line. Whether you sell on Shopify, Etsy, Amazon, or your own website, this article is for you.

What Is USPS Priority Mail International?

USPS Priority Mail International (PMI) is a cost-effective international shipping service from the United States Postal Service that lets you send packages to over 180 countries. You can ship parcels up to 70 pounds, and they typically arrive within 6 to 10 business days.

PMI is faster and more feature-rich than First-Class Package International. It includes USPS tracking and insurance, offering up to $200 for merchandise and $100 for documents.

What Is The Weight And Size Limit For USPS Priority Mail International?

PMI has a maximum weight of 70 lbs. Break large orders into multiple small boxes or use a heavier-duty carrier.

Flat rate boxes must close along normal folds without bulging. Overpacking can void the flat rate pricing.

USPS Priority Mail International has a 70 lb weight limit and 108” combined length + girth limit. Use multiple boxes or consider other carriers if your package exceeds these dimensions.

Choose flat rate packaging that fits your product's size and density. Small flat rate boxes work well for accessories, while large boxes are better for kits or bundled items.

Can You Track USPS Priority Mail International?

Every PMI shipment includes:

• USPS tracking from your location to delivery
• Up to $200 in insurance for merchandise, or $100 for documents
• Additional services (e.g., signature confirmation) available for some countries

Tracking helps customers feel confident and reduces order inquiries. A skincare brand shipping internationally can use PMI’s included insurance to protect orders and avoid replacement costs.

Yes, most PMI shipments include full USPS tracking from origin to final delivery. However, tracking may be limited in some countries once the package passes through customs.

How Many Days Does USPS Priority Mail International Take?

Most Priority Mail International shipments arrive in 6 to 10 business days. USPS handles the first leg, and the destination country’s local post office finishes the delivery.

Keep in mind:

• Delivery speed varies depending on the destination country
• Customs delays can add extra days
• Certain destinations may take longer due to local postal infrastructure

Tip: Add a 2-day buffer to your shipping estimates. If USPS says 6–10 days, tell customers 8–12 days to manage expectations.

Comparing USPS Priority Mail International With Other Ground Shipping Options

Let’s look at how USPS Priority Mail international compares to the homologous services from UPS, FedEx, and DHL Express. To highlight this, we are taking the example of a 5 lb package being shipped from Rochester, New York, USA to Toronto, Ontario, Canada.

USPS Priority Mail International offers lower shipping costs for lightweight items and is suitable for businesses prioritizing affordability over speed.

What Are The Different Service Types of USPS

If your items are under 4 lbs and under $400 in value, First-Class could be fine. For guaranteed speed, Express is an option but at a higher shipping cost.

How Much Does USPS Priority Mail International Cost?

If your package doesn't fit a flat rate box or you want to use custom packaging, you'll use retail pricing based on:

• Package weight (up to 70 lbs)
• Destination country
• USPS's destination country price group chart

Commercial pricing is available through tools like Easyship, offering lower rates than retail.

For example, shipping a 5 lb box to Canada using PMI might cost $42.95 at retail but only $37 with commercial pricing.

You can get commercial pricing through third-party tools like Easyship—even if you're a small-volume shipper.

Benefits:

• Save up to 11% on postage
• No minimum volume required
• Software calculates international shipping costs for you

What Are The Cheapest USPS Priority Mail International Rates? Example Table

USPS Flat Rate Options:

*Prices vary by destination country and country price group

PMI’s mail international flat rate system is helpful for:

• Standardizing shipping costs at checkout
• Avoiding surprise fees for heavier international packages
• Saving time by using free flat rate packaging from USPS

FAQs

What is USPS Priority Mail International?

USPS Priority Mail International is a shipping service that lets you send packages up to 70 lbs to over 180 countries, with tracking and insurance included. Delivery typically takes 6–10 business days.

How much does USPS Priority Mail International cost?

Rates vary by package weight, destination country, and pricing tier (retail or commercial). Flat Rate options start around $30.90, while commercial pricing through tools like Easyship can save you up to 11%.

What’s the delivery time for PMI shipments?

USPS estimates delivery in 6 to 10 business days, depending on the destination country and customs. Use a 2-day buffer for more accurate delivery windows, especially during peak seasons.

Can I track my international USPS shipment?

Yes, most PMI shipments include full USPS tracking from origin to final delivery. However, tracking may be limited in some countries once the package passes through customs.

What if my package exceeds the weight or size limits?

USPS Priority Mail International has a 70 lb weight limit and 108” combined length + girth limit. Use multiple boxes or consider other carriers if your package exceeds these dimensions.