Luggage & travel gear
How to Ship Bulky, Low-Density Luggage
Updated October 2026
A suitcase weighs little and needs a big box, so carriers usually bill it on the box. Their size limits add fees on the largest cases, and a heavy multi-piece order can cost less on a pallet.
Carriers usually bill bulky, low-density luggage on the size of its box more than on its weight. The main carrier rules behind the price are:
- dimensional weight, which is length times width times height divided by 139 for UPS and FedEx or 166 for USPS Priority, billed whenever it is higher than the scale weight
- UPS Large Package and FedEx Oversize fees above 130 inches of length plus girth, or 96 inches on the longest side
- an Additional Handling fee that starts on smaller pieces
- LTL freight, which can price big or multi-piece orders below parcel
Packing each case in a box cut close to its size can potentially lower all of them.
By The Fulfillment.com team
Why luggage is different
Why a suitcase ships at the price of its box
Most small parcels are billed on what they weigh. Luggage usually isn't. A carry-on or a checked softside case is light for its size, so most of what you pay to ship goes on the empty space inside the carton. Ship a suitcase as you would any other parcel and you pay for that space on every order. A loose, oversized box can then pick up surcharges as well, and the case has more room to get knocked about in transit.
Three carrier rules drive most of the cost: dimensional weight, the oversize and Additional Handling fees, and the point where an order costs less on LTL freight than as parcels. The size of the box feeds into all three, so start there.
Dimensional weight
How dimensional weight works
Carriers use one formula to bill a light parcel on the space it takes up, and a boxed suitcase almost always comes out on the dimensional side.
When a parcel's size suggests more weight than it really has, the carrier bills it on the size. The math is the same at every carrier. Multiply length by width by height in inches, then divide by the carrier's divisor. UPS and FedEx use a divisor of 139; USPS Priority Mail uses 166. The answer is the dimensional weight in pounds. The carrier charges on that or on the scale weight, whichever is greater.
Here is a checked suitcase boxed at 30 by 20 by 14 inches. That box holds 8,400 cubic inches, and 8,400 divided by 139 is roughly 60 pounds. The case inside may weigh under ten pounds, but the carrier bills 60, because the box takes up 60 pounds' worth of room on the truck. Most of the cost of shipping luggage sits in that difference.
The divisor matters too. A larger divisor gives a smaller dimensional weight for the same box, so the carrier and service a parcel goes out on can matter as much as the box itself. Who makes that choice matters as well, which we come back to below. A smaller box shrinks the number that goes into the formula, and our guide to right-sized cartonization for travel gear covers how that box is chosen.
Size limits
Oversize and Additional Handling limits
The fees start at set sizes, and two measurements decide whether a luggage carton reaches them.
Some parcels are too big to run through a carrier's sorting machines, and carriers charge extra for them on top of dimensional weight. UPS calls its program Large Package and FedEx calls its program Oversize. Both also charge an Additional Handling fee. These are fairly fixed amounts added to the base rate, and one bulky case can owe more than one of them. The oversize programs check two measurements.
Length plus girth above 130 inches. Girth is twice the width plus twice the height, so this number tells the carrier how big a box is in every direction at once. A multi-piece carton or a large checked hardside case is the most likely to go over, because it is big on all three sides. UPS Large Package and FedEx Oversize both start here.
A longest side above 96 inches. This one catches long, awkward pieces such as garment bags and oversized trolleys, which can be ordinary in two directions and very long in the third. A box can pass the length-plus-girth check and still fail this one. Carriers check both, and either one alone puts a parcel into both carriers' oversize programs.
Additional Handling starts sooner. This fee applies to much smaller pieces than the oversize programs do. It starts at a longest side over 48 inches, length plus girth over 105 inches, or a weight over 50 pounds. A case can owe it while nowhere near oversize, so for most bulky luggage it is the first fee to watch.
A smaller, tighter box is less likely to go over any of these limits. For a long or odd-shaped piece, an outer box built to its shape can keep it from measuring as oversize when it doesn't need to. Checking each box against the limits before the label prints means you know the fee up front, instead of finding it on the carrier invoice.
Parcel or freight
When LTL freight costs less than parcel
Any brand shipping bulky goods meets this choice. Past a certain size, parcel fees add up to more than a pallet would cost.
Most luggage orders should go parcel. One piece, or a small multi-pack inside carrier size limits, gets there fastest and with the least fuss that way. Bigger orders change the sums. An order may combine several bulky pieces, or one heavy, oversized piece may pick up several fees. Either way, the parcel total can climb past what the same goods would cost on less-than-truckload (LTL) freight.
Parcel pricing charges each oversized box separately, so fees and dimensional weight build as the order grows. LTL prices a pallet as one shipment, by freight class and weight, so putting several bulky pieces on one pallet can avoid the per-box fees altogether. LTL has its own costs, though. It is slower and quoted differently, and it usually delivers to a dock or the curb, not the front door. For an ordinary online order it doesn't replace parcel.
Which mode costs less changes from order to order. It depends on:
- the order's weight
- its cube, or the space it takes up
- the lane it travels
- the delivery date you've promised
A partner that only ships parcel will often overpay on your heaviest, bulkiest orders without telling you. Ask any partner how it makes that call on your heaviest orders, and whether the team that packed the order also books the freight. We arrange FTL and LTL freight through our carrier relationships, alongside parcel, and the team that packed the order books it. For the heaviest multi-piece sets, see our guide to nested luggage set fulfillment and cartonization.
Bringing the cost down
Where a 3PL can potentially lower luggage shipping costs
Carriers set the formula and the size limits. The box, the carrier and where your stock sits are choices, and each one can potentially bring the bill down.
- Pack each case in a snug box. We fit the box to each case. Less empty space means less dimensional weight, and a tighter carton is less likely to cross the size limits. The case also has less room to shift on the way. Our guide to right-sized cartonization for travel gear covers how the box is chosen and what it can save.
- One team packs and ships. The people who pack an order also choose its carrier and service, working from the box's real size and weight.
- Keep stock near your buyers. You can split your stock across our warehouses so it sits closer to the people who buy it, and the average order can then travel a shorter, cheaper distance in the same box. Between them, those warehouses cover 99.77% of the US in 1-3 day ground.
What these could save you depends on your cartons, your mix of parcel and LTL, and your lanes. We work out that figure for your SKUs in a quote across our services.
Questions brands ask about shipping luggage
How is dimensional weight calculated on a suitcase?
Multiply the box's length, width and height in inches, then divide by the carrier's divisor. UPS and FedEx divide by 139, and USPS Priority Mail divides by 166. The carrier bills whichever is greater, that figure or what the box weighs on a scale. A suitcase is light for the size of box it needs, so the dimensional figure usually comes out higher, and you end up paying to ship the air around the case.
What triggers oversize or additional-handling surcharges on luggage?
There are two separate fees. UPS Large Package and FedEx Oversize apply once a parcel goes past 130 inches in length plus girth, or past 96 inches on its longest side. Girth is twice the width plus twice the height. Additional Handling starts sooner, at a longest side over 48 inches, length plus girth over 105 inches, or a weight over 50 pounds. Large checked hardside cases and multi-piece sets are the most likely to cross these limits. A closer-fitting box can bring many of them back under, and measuring it before the label prints shows any fee in advance.
When should luggage ship by parcel versus LTL freight?
Parcel works for single pieces and small multi-packs that stay inside carrier size limits. Once an order gets heavier or larger, or holds several bulky pieces, less-than-truckload (LTL) freight on a pallet can cost less. Parcel fees add up box by box, while the pallet is priced as one shipment. Where the switch happens depends on weight, cube and lane, so it changes from order to order. Before a partner settles on one, have it price both on your heaviest orders.
How do you keep dimensional weight down on bulky, low-density luggage?
Mostly with the box. We pack each case in the smallest box that still protects it, so there is less empty space for the carrier to bill. How much that saves depends on how far your current boxes are from the smallest size that still protects the case. The carrier and service matter too. The same team that packed the order chooses them for each parcel.
Does girth or longest-side matter more for surcharges?
Carriers check both, and either one can bring a fee by itself. Length plus girth catches boxy cartons and multi-piece sets. The longest-side limit catches long, awkward pieces such as garment bags or oversized trolleys. A smaller, tighter box is less likely to cross either one. For an awkward piece, an outer box built to its shape can keep it from measuring as oversize when it doesn't need to.
Can multi-node placement change my luggage shipping cost?
Yes. The box sets the dimensional weight and any size fees, and distance sets much of the rest of the rate. If you place stock in more than one of our warehouses, a suitcase sits nearer the buyer and the typical parcel has a shorter, cheaper trip. Our warehouses ship to 99.77% of the US in 1-3 day ground, so the same fitted box covers less distance on most orders.
Get a shipping quote for your luggage line
Tell us about your luggage SKUs, how your orders are made up and how many you ship. We'll show you what tighter boxes and our carrier choices could do to your dimensional weight, and which bulk orders could cost less on a pallet. The quote costs nothing and commits you to nothing.