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Priority Mail Express Flat Rate

  

For your business

With Priority Mail Express Flat Rate™ shipping with the Postal Service™ is even easier, as Flat Rate offers one rate to any state.  Similar to our Priority Mail Express service, our Flat Rate is our fastest service, with limited exceptions, available 365 days a year with a money-back guarantee1 and overnight scheduled delivery to most U.S. addresses, including PO Boxes™ and military addresses all for one low, Flat Rate2. And you’ll save even more when you buy Priority Mail Express Flat Rate postage online.

New Name. Same Service. Learn More. Image of Priority Mail Express™ Boxes.  

Features

  • No weighing or calculating needed2
  • Overnight scheduled delivery to most U.S. locations
  • Free Package Pickup3
  • Money-back guarantee1
  • Includes signature proof of delivery and tracking information with USPS Tracking™
  • Includes up to $100 in insurance coverage4
  • No surcharges for fuel or Saturday, residential, and rural delivery
  • Sunday, holiday, and 10:30 a.m. scheduled delivery service available for a small fee

Charge your Priority Mail Express Flat Rate shipments to one account.
Learn more about setting up a USPS Corporate Account™ ›



Downloadable Pricing Files
Priority Mail Express - Commercial Base®
Priority Mail Express - Commercial Plus®
Priority Mail Express - Retail

Compare other USPS® mailing and shipping services ›

Find out when and where to drop it off ›

1 For many major markets. Average number of days based on origin and destination.
2 For mailable items up to 70 lbs.
3 For details on free Package Pickup, visit www.usps.com/pickup.
4 Some restrictions apply. Visit usps.com/makingprioritymailbetter for details.

Service/Option Size Order Now

Letter Envelopes

 12 1/2" x 9 12"

              Order Now
for Express Mail Flat Rate for Business Envelope

Legal Envelope

 15" x 9 1/2"

Order Now for Legal Envelope

Padded Envelope

 12 1/2" x 9 1/2"

Order Now for Express Mail Flat Rate Padded Envelope

Box-Top-loading

Outside:
11 1/4" x 8 3/4" x 6"

Inside:
11" x 8 1/2" x 5 1/2"

Order Now for Express Mail Flat Rate for Business Top-loading Box

Box-Side-loading

Outside:
14" x 12" x 3 1/2"

Inside:
13 5/8" x 11 7/8" x 3 3/8"

               Order Now
for Express Mail Flat Rate for Business Side-loading Box
Priority Mail Express™ Shipping. Order free supplies. Image of Priority Mail Express™ Supplies. USPS Corporate Account™. Charge your Priority Mail Express™ shipments to one account. Go. Image of Priority Mail Express™ supplies. Ship Online. Print a label with postage. Image of computer printer with shipping label and brown box.