Priority Mail International
6–10 Business Days1 & Flat Rate Shipping2
Priority Mail International® service is a reliable and affordable way to ship to more than 190 countries, including Canada and Australia.
Use free Flat Rate Boxes and Envelopes to pay one price, regardless of box weight, up to 70 lbs. Postage prices vary based on destination.3 Prices start at $26.90.
ALERT: USPS can no longer accept or deliver international mail to several countries due to COVID-19 service impacts. See all countries with temporary service and guaranteed-delivery suspensions. Read More
Features & Pricing
- Fast international delivery time: 6–10 business days1
- May qualify for free Package Pickup3 service at your home or office
- Includes USPS Tracking®4
- Includes (with some exceptions) up to $100 of insurance for non-negotiable document reconstruction and up to $200 insurance for merchandise for loss or damage5
- Except for Priority Mail International Flat Rate pricing, Priority Mail International prices are based on weight and destination country
Weight, Size, & Shape Requirements
- Maximum weight is 70 lbs.
- Maximum weight for Priority Mail International Flat Rate Envelopes and small Flat Rate Boxes is 4 lbs.
- Maximum weight for medium and large Priority Mail International Flat Rate Boxes is 20 lbs.
- Some countries have lower weight restrictions.
- When sealing a Flat Rate Envelope or Box, the container flaps must be able to close within the normal folds.
Customs Forms
Print your international postage with Click-N-Ship® service and our tool creates the customs form for you.
If you just need a customs form, you can use our online tool to fill out the correct form.
Priority Mail International Flat Rate Products
Expand All| Free Supplies6 | Shipping Price From* | Dimensions | Great For… |
|---|---|---|---|
| Flat Rate Envelope | $25.55 Commercial Base $26.90 at Post Office™ & Online |
12 1/2″ x 9 1/2″ |
Letters Documents Manuscripts |
| Gift Card Flat Rate Envelope | $25.55 Commercial Base $26.90 at Post Office & Online |
10″ x 7″ |
Oversized Greeting Cards Gift Cards |
| Window Flat Rate Envelope | $25.55 Commercial Base $26.90 at Post Office & Online |
10″ x 5″ 12 1/2″ x 9 1/2″ |
Pre-addressed Envelopes |
| Small Flat Rate Envelope | $25.55 Commercial Base $26.90 at Post Office & Online |
10″ x 6″ |
Small Documents Passports |
| Padded Flat Rate Envelope | $25.55 Commercial Base $26.90 at Post Office & Online |
12 1/2″ x 9 1/2″ |
Clothing Books Boxed Jewelry |
| Legal Flat Rate Envelope | $25.55 Commercial Base $26.90 at Post Office & Online |
15″ x 9 1/2″ |
Legal Documents |
| Small Flat Rate Box | $26.50 Commercial Base $27.90 at Post Office & Online |
Outside: 8 11/16″ x 5 7/16″ x 1 3/4″ Inside: 8 5/8″ x 5 3/8″ x 1 5/8″ |
Brochures Small Electronics Accessories |
| DVD Box | $26.50 Commercial Base $27.90 at Post Office & Online |
Outside: 8 3/4″ x 5 9/16″ x 1 1/2″ Inside: 7 9/16″ x 5 7/16″ x 1 1/8″ |
DVDs CDs |
| Large Video Box | $26.50 Commercial Base $27.90 at Post Office & Online |
Outside: 6″ x 6 7/16″ x 2 3/16″ Inside: 9 1/4″ x 6 1/4″ x 2″ |
VHS Tapes Small Books |
| Medium Flat Rate Box — 1 (top-loading) | $48.95 Commercial Base $51.55 at Post Office & Online |
Outside: 11 1/4″ x 8 3/4″ x 6″ Inside: 11″ x 8 1/2″ x 5 1/2″ |
Office Supplies Shoes Small Electronics |
| Medium Flat Rate Box — 2 (side-loading) | $48.95 Commercial Base $51.55 at Post Office & Online |
Outside: 14″ x 12″ x 3 1/2″ Inside: 13 5/8″ x 11 7/8″ x 3 3/8″ |
AV Equipment Clothes |
| Large Flat Rate Box | $63.70 Commercial Base $67.05 at Post Office & Online |
Outside: 12 1/4″ x 12 1/4″ x 6″ Inside: 12″ x 12″ x 5 1/2″ |
Laptops Multiple Items |
| Large Flat Rate Board Game Box | $63.70 Commercial Base $67.05 at Post Office & Online |
Outside: 24 1/16″ x 11 7/8″ x 3 1/8″ Inside: 23 11/16″ x 11 3/4″ x 3″ |
Board Games |
* Prices are based on regional destination.
1. For many major markets. Actual number of days may vary based on origin, destination, and customs delays. Back ^ to legal disclaimer 1
2. Up to 20 lbs in the Priority Mail International Medium and Large Flat Rate Boxes and up to 4 lbs in Priority Mail International Flat Rate Envelopes and Small Flat Rate Priced Boxes. Back ^ to legal disclaimer 2
3. For details on free Package Pickup, visit Schedule a Pickup. Back ^ to legal disclaimer 3
4. Limitations may apply for certain destinations. Not available for Priority Mail International Flat Rate Envelopes or Small Flat Rate Boxes. Back ^ to legal disclaimer 4
5. See the International Mail Manual for insurance details and maximum amount of insurance allowed by each country. Back ^ to legal disclaimer 5
6. Boxes and envelopes are delivered with your regular mail usually within 7 to 10 business days. Back ^ to legal disclaimer 6