USPS Priority Mail shipping box and envelope

Priority Mail® is the best way to ship small packages with USPS®

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 best way to ship small but heavy packages. 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 89% 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 33% 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 15% 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 25% by using Pirate Ship

Get lower than Commercial Pricing rates for Priority Mail

Priority Mail labelsPriority Mail Small Flat Rate Box

USPS offers two pricing tiers for Priority Mail; Retail and Commercial. Pirate Ship is authorized to offer prices BELOW Commercial Pricing shipping rates with no markup or fees, so you can save up to 89% compared to buying Priority Mail shipping labels at Retail Pricing.

We can't advertise the highlighted rates because they're UP TO $1.82 CHEAPER than Commercial Pricing!
Create a free account & get a rate quote to see these secret rates
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
Less than
$7.75
Less than
$7.75
Less than
$7.75
Less than
$7.75
Less than
$7.75
Less than
$7.75
Less than
$7.75
Less than
$7.75
Legal Flat Rate Envelope
Less than
$8.05
Less than
$8.05
Less than
$8.05
Less than
$8.05
Less than
$8.05
Less than
$8.05
Less than
$8.05
Less than
$8.05
Padded Flat Rate Envelope
Less than
$8.45
Less than
$8.45
Less than
$8.45
Less than
$8.45
Less than
$8.45
Less than
$8.45
Less than
$8.45
Less than
$8.45
Small Flat Rate Box
Less than
$8.25
Less than
$8.25
Less than
$8.25
Less than
$8.25
Less than
$8.25
Less than
$8.25
Less than
$8.25
Less than
$8.25
Medium Flat Rate Box
Less than
$14.25
Less than
$14.25
Less than
$14.25
Less than
$14.25
Less than
$14.25
Less than
$14.25
Less than
$14.25
Less than
$14.25
Large Flat Rate Box
Less than
$19.20
Less than
$19.20
Less than
$19.20
Less than
$19.20
Less than
$19.20
Less than
$19.20
Less than
$19.20
Less than
$19.20
Regional Rate Box A
Less than
$8.38
Less than
$8.58
Less than
$8.88
Less than
$9.55
Less than
$11.55
$12.32
$13.54
$26.37
Regional Rate Box B
Less than
$8.88
Less than
$9.37
Less than
$10.12
$12.47
$16.61
$19.59
$22.51
$44.02
Cubic 0.1
Less than
$7.54
Less than
$7.81
Less than
$8.05
Less than
$8.37
Less than
$9.18
$9.77
$10.43
$18.56
Cubic 0.2
Less than
$8.02
Less than
$8.20
Less than
$8.49
Less than
$9.12
Less than
$10.96
$11.62
$12.67
$25.09
Cubic 0.3
Less than
$8.25
Less than
$8.62
Less than
$9.01
Less than
$10.03
$13.48
$15.22
$17.93
$34.46
Cubic 0.4
Less than
$8.37
Less than
$8.85
Less than
$9.57
$11.83
$15.92
$18.73
$21.59
$42.67
Cubic 0.5
Less than
$8.50
Less than
$9.07
Less than
$10.04
$13.18
$17.79
$22.31
$25.74
$51.21
1 lb
Less than
$7.37
Less than
$7.68
Less than
$7.90
Less than
$8.12
Less than
$8.59
$9.16
$9.68
$16.39
2 lb
Less than
$8.02
Less than
$8.20
Less than
$8.49
Less than
$9.12
Less than
$10.96
$11.62
$12.66
$25.08
3 lb
Less than
$8.24
Less than
$8.60
Less than
$8.98
Less than
$9.93
$13.34
$15.03
$17.74
$34.03
4 lb
Less than
$8.34
Less than
$8.84
Less than
$9.49
$11.54
$15.54
$18.03
$20.77
$40.97
5 lb
Less than
$8.45
Less than
$8.89
Less than
$9.82
$12.71
$17.03
$20.81
$24.01
$47.68
6 lb
Less than
$8.56
Less than
$9.25
Less than
$10.25
$13.63
$18.53
$23.78
$27.43
$54.64
7 lb
Less than
$9.04
Less than
$10.21
Less than
$10.82
$14.50
$20.02
$25.80
$29.82
$61.35
8 lb
Less than
$9.18
Less than
$10.71
Less than
$12.07
$15.38
$21.53
$27.81
$32.21
$68.87
9 lb
Less than
$9.79
Less than
$11.08
Less than
$12.57
$16.64
$23.03
$29.83
$34.59
$76.59
10 lb
Less than
$10.29
Less than
$11.55
Less than
$12.92
$17.74
$24.52
$31.84
$36.77
$83.29
11 lb
$11.75
$12.46
$13.64
$18.84
$26.02
$33.80
$38.93
$91.00
12 lb
$12.21
$12.99
$14.32
$19.92
$27.51
$35.63
$41.10
$97.55
13 lb
$12.46
$13.36
$15.02
$21.00
$28.99
$37.46
$43.27
$101.04
14 lb
$12.77
$13.95
$15.71
$22.07
$30.36
$39.29
$45.44
$106.04
15 lb
$12.89
$14.55
$16.40
$23.14
$31.71
$41.13
$47.62
$108.85
16 lb
$13.40
$15.14
$17.09
$24.21
$33.08
$42.96
$49.78
$114.83
17 lb
$13.91
$15.73
$17.78
$25.27
$34.43
$44.80
$51.95
$120.88
18 lb
$14.43
$16.32
$18.47
$26.34
$35.79
$46.62
$54.12
$126.97
19 lb
$14.94
$16.92
$19.15
$27.40
$37.16
$48.46
$56.28
$133.00
20 lb
$15.45
$17.51
$19.84
$28.46
$38.51
$50.29
$58.46
$139.13
21-70 lbs
To see all USPS® Priority Mail® rates, view or download the rate sheets below

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