The carton assumption
These quotes describe a 15 lb load in an 18 by 14 by 10 inch box. Pack the same pounds into something bulkier and the billed weight can jump past what the scale shows, dragging every row upward.
The 15-pounder
Cheapest way to ship a 15 lb package
Fifteen pounds is toolbox territory, small appliance territory, the weight where guessing gets expensive. We quoted an 18 by 14 by 10 inch carton at exactly this weight on two routes and one lane produced a photo finish worth seeing.
Every quoted service shownTwo named routesWinner marked in green
Decided by one cent
The eastern lane's top two rates landed a penny apart on 2026-07-27, proof that comparing pays even when the field looks settled.
15 lb, every service, both routes
Route one: Newark, NJ 07102 to Atlanta, GA 30303
| Service | Price | Quoted window |
|---|---|---|
| UPS Ground Saver | $20.50 | about 4 business days |
| FedEx Ground Economy | $20.51 | 4-5 business days |
| USPS Ground Advantage | $23.69 | 6-7 business days |
| UPS Ground | $23.70 | 3-4 business days |
| FedEx Ground | $32.23 | 3-4 business days |
Route two: Los Angeles, CA 90011 to New York, NY 10001
| Service | Price | Quoted window |
|---|---|---|
| UPS Ground Saver | $30.48 | about 6 business days |
| FedEx Ground Economy | $33.79 | 7-8 business days |
| UPS Ground | $34.71 | 6-7 business days |
| USPS Ground Advantage | $35.33 | 6-7 business days |
| UPS 3 Day Select | $54.57 | 3-4 business days |
Two photo finishes hide in the Newark table: the winning pair split by a cent at the top, and Ground Advantage edged UPS Ground by another cent in the middle while promising three extra days of transit. That second one is the row to study, because it shows a near-identical price buying wildly different speed. On the western lane nothing was close and the economy tier simply won.
Fifteen pounds travels fine by ground
Express tiers exist for deadlines, not for weight. Nothing about a 15 lb parcel needs air service, so unless a date is fixed, the ground economy tiers deliver the same box for far less money.
Drop-off is part of the choice
The winning UPS rate assumes handing the box to the UPS network, while the USPS row rides with your mail carrier's ecosystem. When two prices sit close, pick the counter you can actually reach without a detour.
15 lb shipping questions
What's the cheapest way to ship a 15 lb package?
In our 2026-07-27 quotes the answer was UPS Ground Saver on both routes tested: $20.50 from Newark to Atlanta and $30.48 from Los Angeles to New York for an 18 x 14 x 10 in carton. FedEx Ground Economy trailed by one cent on the eastern lane.
How much does it cost to ship a 15 lb box across the country?
Coast to coast our 15 lb carton drew quotes from $30.48 on the slowest tier up to $54.57 for UPS 3 Day Select on 2026-07-27. Distance adds roughly ten dollars over the regional lane at this weight, and speed adds far more.
Is USPS competitive at 15 lb?
Close but not winning in this data. Ground Advantage quoted $23.69 from Newark, one cent under UPS Ground at $23.70, yet more than three dollars above the winning economy tier. By this weight the Postal Service's light-parcel edge has worn off.
Does the box size matter as much as the 15 lb?
Yes, because carriers bill the greater of scale weight and size-based weight. Keep a 15 lb shipment in the tightest safe carton; grow the box a few inches each way and you can slide into a higher billed weight without adding a single ounce.