Cost for medium flat rate box priority mail

The cost for a medium flat rate box with Priority Mail varies depending on the destination and the weight of the package. Here are the current rates for a medium flat rate box with Priority Mail:

Domestic (within the United States)

• Medium flat rate box (up to 20 lbs): $14.35

International

• Medium flat rate box (up to 20 lbs) to Canada: $34.95
• Medium flat rate box (up to 20 lbs) to Mexico: $34.95
• Medium flat rate box (up to 20 lbs) to other countries: $44.95

Additional Fees

• Insurance: $2.95 (optional)
• Signature Confirmation: $3.10 (optional)

Weight-Based Pricing

If your package weighs more than 20 lbs, you'll need to use the weight-based pricing for Priority Mail. The rates are as follows:

• 21-30 lbs: $19.95
• 31-40 lbs: $24.95
• 41-50 lbs: $29.95
• 51-60 lbs: $34.95
• 61-70 lbs: $39.95
• 71-80 lbs: $44.95
• 81-90 lbs: $49.95
• 91-100 lbs: $54.95

Please note that these rates are subject to change, so it's always a good idea to check the official USPS website for the most up-to-date pricing information.