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USPS Priority Mail shipping box and envelope

Priority Mail® is the cheapest way to ship small packages

With the best mix of fast delivery speed and low cost, Priority Mail has four sub-services to maximize your savings when shipping with USPS®

Leafy plantPriority Mail shipping label printed by a Dymo 4XL printerWooden ruler

You can ship any box or envelope with Priority Mail

Priority Mail Cubic softpack shipping labels and envelope

Priority Mail is the shipping service that USPS advertises the most, and you’ve probably seen the ads for Priority Mail Flat Rate® with the tagline, “If it fits, it ships.”

But because of those commercials, a common misunderstanding is that you have to use a special USPS-branded box. It’s not true!

You can use any type of packaging to ship with Priority Mail and it’s usually much cheaper than using a Flat Rate package.

Priority Mail postage

There are 4 different sub-services of USPS Priority Mail

Tropical leaf

All Priority Mail sub-services have the same standards, with delivery within 1-3 days, full package tracking, and $100 of insurance included for free.

Size-based Priority Mail Cubic®

A “secret” service that’s only available through the Commercial Plus Pricing® that Pirate Ship offers, Priority Mail Cubic is the cheapest way to ship small packages, easily beating any other carrier. Learn more...

  • 📦

    Cheapest for small packages 1-20 lb

  • ⏰

    Delivery in 1 to 3 days

  • 📡

    Door-to-door tracking included

  • 💥

    $100 insurance included

  • 💵

    Save up to 90% by using Pirate Ship

Weight-based Priority Mail

Is your package too big to qualify for Cubic rates? Bummer! But you can still get incredible shipping rates with weight-based Priority Mail... just watch out for Dimensional Weight pricing if your box is large! Learn more...

  • 📦

    Cheapest in rare cases

  • ⏰

    Delivery in 1 to 3 days

  • 📡

    Door-to-door tracking included

  • 💥

    $100 insurance included

  • 💵

    Save up to 40% by using Pirate Ship

Priority Mail Flat Rate

Priority Mail Flat Rate Envelopes® and the Small Flat Rate Box® are incredible deals, but otherwise it's always cheaper to ditch the free packaging and use your own packaging instead of paying a premium. Learn more...

  • 📦

    Cheapest in only a few cases

  • ⏰

    Delivery in 1 to 3 days

  • 📡

    Door-to-door tracking included

  • 💥

    $100 insurance included

  • 💵

    Save up to 12% by using Pirate Ship

Priority Mail Regional Rate®

Priority Mail Regional Rate boxes are never cheaper than Priority Mail Cubic, with average costs that are significantly higher than it would be if you used your own similarly-sized packaging. Learn more...

  • 📦

    Never cheaper than Priority Mail Cubic

  • ⏰

    Delivery in 1 to 3 days

  • 📡

    Door-to-door tracking included

  • 💥

    $100 insurance included

  • 💵

    Save up to 23% by using Pirate Ship

Get the cheapest Priority Mail shipping rates available

Priority Mail labelsPriority Mail Small Flat Rate Box

USPS offers two pricing tiers for Priority Mail; Retail and Commercial. Pirate Ship passes through the cheapest pricing tier available, USPS Commercial Pricing shipping rates, at their actual cost with no markup or fees, so you can save up to 90% compared to buying Priority Mail shipping labels from the Post Office or other shipping software online.

Weight/Size
Up to, not over
0-150 miles
L, 1 & 2
150-300 miles
Zone 3
300-600 miles
Zone 4
600-1000 miles
Zone 5
1000-1400 miles
Zone 6
1400-1800 miles
Zone 7
1800+ miles
Zone 8
Territories
Zone 9
Flat Rate Envelopes
$6.95
$6.95
$6.95
$6.95
$6.95
$6.95
$6.95
$6.95
Legal Flat Rate Envelope
$7.25
$7.25
$7.25
$7.25
$7.25
$7.25
$7.25
$7.25
Padded Flat Rate Envelope
$7.55
$7.55
$7.55
$7.55
$7.55
$7.55
$7.55
$7.55
Small Flat Rate Box
$7.50
$7.50
$7.50
$7.50
$7.50
$7.50
$7.50
$7.50
Medium Flat Rate Box
$12.80
$12.80
$12.80
$12.80
$12.80
$12.80
$12.80
$12.80
Large Flat Rate Box
$17.60
$17.60
$17.60
$17.60
$17.60
$17.60
$17.60
$17.60
Regional Rate Box A
$7.65
$7.85
$8.12
$8.76
$10.00
$10.55
$11.20
$15.64
Regional Rate Box B
$8.05
$8.50
$9.40
$10.65
$16.15
$18.47
$21.03
$29.73
Cubic 0.1
$6.95
$7.28
$7.49
$7.65
$7.82
$7.99
$8.25
$9.91
Cubic 0.2
$7.34
$7.68
$7.91
$8.12
$8.40
$8.61
$8.92
$10.92
Cubic 0.3
$7.79
$7.99
$8.27
$8.92
$10.18
$10.73
$11.39
$15.90
Cubic 0.4
$7.95
$8.27
$8.63
$9.50
$11.79
$12.94
$14.79
$20.09
Cubic 0.5
$8.07
$8.56
$9.13
$10.34
$13.95
$15.75
$17.91
$24.96
1 lb
$6.95
$7.28
$7.49
$7.65
$7.82
$7.99
$8.25
$9.91
2 lb
$7.42
$7.61
$7.88
$8.50
$9.70
$10.23
$10.86
$15.17
3 lb
$7.61
$7.99
$8.34
$9.26
$11.80
$13.10
$15.28
$20.58
4 lb
$7.71
$8.20
$8.81
$10.03
$13.75
$15.59
$17.61
$24.78
5 lb
$7.81
$8.25
$9.12
$10.33
$15.67
$17.92
$20.40
$28.84
6 lb
$7.91
$8.29
$9.22
$13.77
$17.93
$20.83
$23.81
$33.05
7 lb
$8.15
$9.41
$9.46
$15.43
$19.86
$23.48
$26.75
$37.11
8 lb
$8.20
$9.87
$11.16
$16.84
$21.82
$25.85
$30.04
$41.66
9 lb
$9.01
$10.25
$11.62
$18.06
$23.74
$28.00
$33.40
$46.33
10 lb
$9.38
$10.67
$11.69
$19.51
$25.64
$30.79
$36.32
$50.38
11 lb
$10.67
$12.77
$13.69
$21.31
$27.52
$33.51
$39.34
$55.04
12 lb
$11.32
$13.58
$15.93
$22.81
$30.01
$36.23
$42.20
$59.01
13 lb
$11.91
$14.36
$16.68
$24.03
$32.21
$37.69
$43.69
$61.12
14 lb
$12.52
$15.15
$17.57
$25.43
$34.02
$39.79
$45.86
$64.15
15 lb
$13.01
$15.94
$18.42
$26.74
$35.33
$40.56
$47.06
$65.84
16 lb
$13.45
$16.79
$19.42
$28.07
$37.34
$42.84
$49.65
$69.46
17 lb
$13.88
$17.57
$20.35
$29.44
$39.23
$45.07
$52.29
$73.12
18 lb
$14.15
$18.11
$21.26
$30.76
$41.31
$47.29
$54.91
$76.81
19 lb
$14.48
$18.53
$21.75
$31.57
$43.16
$49.49
$57.51
$80.45
20 lb
$15.05
$18.82
$22.19
$32.15
$44.28
$51.34
$60.18
$84.16
21-70 lbs
To see all USPS® Priority Mail® rates, view or download the rate sheets below

View rates on USPS.com

View rates on Google Sheets

Download rates PDF

Download rates spreadsheet

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Cheapest USPS® rates

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