How much postage for priority mail flat rate envelope

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

Small Flat Rate Envelope:

Medium Flat Rate Envelope:

Large Flat Rate Envelope:

Extra Large Flat Rate Envelope:

Note: These rates apply to envelopes that are at least 6.125 inches long, 11.5 inches high, and 1/4 inch thick.

Keep in mind that these rates are subject to change, so it's always a good idea to check the official USPS website or consult with a postal worker for the most up-to-date information.

Also, if your envelope weighs more than the maximum weight for the flat rate envelope, you'll need to use a Priority Mail box or pay the difference in postage.