Postage rate for priority mail flat rate envelope

The postage rate for a Priority Mail Flat Rate envelope varies depending on the weight and destination of the mailpiece. Here are the current rates for Priority Mail Flat Rate envelopes:

Domestic Rates

• Small Flat Rate Envelope (up to 1 oz): $7.50
• Medium Flat Rate Envelope (up to 13 oz): $14.35
• Large Flat Rate Envelope (up to 15 oz): $19.35

International Rates

• Small Flat Rate Envelope (up to 1 oz): $24.95
• Medium Flat Rate Envelope (up to 13 oz): $34.95
• Large Flat Rate Envelope (up to 15 oz): $44.95

Additional Fees

• Insurance (up to $100): $2.95
• Signature Confirmation: $3.10
• Delivery Confirmation: $0.50

Note: 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 rates.

Also, keep in mind that the Priority Mail Flat Rate envelope has a maximum weight limit of 15 oz, and any additional weight will require additional postage.