Carry-On Weight Limits by Airline
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Most US airlines publish no weight limit for domestic carry-ons; the working rule is that you must be able to lift the bag into the overhead bin without help. Most international carriers do publish limits, commonly 7 to 12 kg (15 to 26 lb), and some weigh bags at check-in or the gate.
That split surprises a lot of US travelers on their first long-haul trip. Here are the published numbers, what they mean in practice, and how to stay under them.
The US domestic picture
American, Delta, United, Alaska, JetBlue, and Southwest publish carry-on size limits but no weight limit for domestic flying. The physical constraints do the enforcing: the bag must fit the sizer, and you must get it into the bin unassisted. Crew are generally not required to lift passenger bags, so a carry-on you cannot raise over your head is a carry-on problem regardless of any rulebook.
Two caveats keep this from being a free pass. First, a few US carriers apply weight limits on specific routes or aircraft, and regional jets with small bins force gate checks by size regardless of weight. Second, the moment your itinerary includes an international carrier, even as a codeshare partner operating one leg, that carrier's cabin rules can apply to the whole trip.
Published international limits
Well-known published carry-on weight limits as of mid-2026. Allowances change and vary by cabin and route, so verify with the airline before you fly.
| Airline | Limit (kg) | Limit (lb) | Notes |
|---|---|---|---|
| Lufthansa | 8 | 18 | Per cabin bag, economy |
| Emirates | 7 | 15 | Economy |
| Qatar Airways | 7 | 15 | Economy |
| Singapore Airlines | 7 | 15 | Economy |
| Air France | 12 | 26 | Cabin bag plus personal item, combined |
| British Airways | 23 | 51 | Unusually generous, per bag |
| Qantas | 7 | 15 | Economy, some fares allow two bags totaling 14 kg |
| Air Canada | No fixed weight | No fixed weight | Must lift into the bin unaided |
The pattern: Asian, Middle Eastern, and Australian carriers cluster at 7 kg, European carriers run 8 to 12 kg, and British Airways is the outlier at 23 kg. Low-cost carriers worldwide tend to sit at the strict end and enforce hardest, because bag fees are part of the business model.
Why the empty case weight matters
A 7 kg allowance is about 15.4 lb. That number has to cover the case itself plus everything in it, which is why empty weight is one of the most practical specs in luggage shopping.
Typical empty weights by category for a carry-on size case:
| Case type | Typical empty weight | Left from 7 kg (15.4 lb) |
|---|---|---|
| Softside | 5 to 6 lb | Roughly 9 to 10 lb of contents |
| Polycarbonate | 6 to 8 lb | Roughly 7 to 9 lb of contents |
| Aluminum | 9 to 11 lb | Roughly 4 to 6 lb of contents |
Those are category ranges, not specs for any particular case. The honest takeaway is that aluminum is the heaviest shell type, and that is the price of a rigid metal case. On a 7 kg carrier, an aluminum carry-on leaves room for a genuinely minimal packing list; on a 12 kg carrier or any US domestic flight, the difference stops mattering for most trips. Weight is one axis of the choice, durability and protection are others, and the full comparison lives in aluminum vs polycarbonate luggage.
Whatever the material, remember the size side of the equation too: weight limits and dimensions are enforced together, and the size rules are covered in the carry-on size guide.
How to weigh your carry-on at home
No luggage scale needed. A bathroom scale and thirty seconds:
- Weigh yourself and note the number.
- Pick up the packed case and step on the scale again.
- Subtract. The difference is the bag's weight.
This is accurate to well under a pound, which is all you need. Do it the night before an international trip, while the fix is still moving items around instead of paying at the airport. A small hanging luggage scale is a worthwhile purchase if you fly strict carriers often; they cost little and weigh nothing.
How to cut carry-on weight
When the scale says you are over, cut in this order:
- Wear the heavy things. Boots, the jacket, the sweater. Worn items are not weighed on almost every airline.
- Cut the shoe count. Shoes are the densest thing in most bags. Two pairs total, one on your feet.
- Kill the just-in-case pile. Anything you packed for a scenario rather than a plan can usually be bought at the destination if the scenario happens.
- Go solid on toiletries. Bars and tablets weigh less than liquids and skip the liquids bag.
- Move paper to a screen. Books and printed documents are heavier than they look.
- Shift weight to the personal item. On airlines that weigh only the cabin bag, dense small items can ride under the seat, but check whether the limit is per bag or combined. Air France's 12 kg, for example, covers both bags together.
Most of these choices are made at packing time, not at the airport, and the packing system that keeps a bag light in the first place is in how to pack a carry-on. Batteries and power banks are the one thing you can never move to a checked bag, whatever the scale says; they are required to stay in the cabin.
What happens at the gate if you are overweight
Enforcement varies, but the standard outcomes are:
- Repack on the spot. Move items into your personal item or pockets, or wear another layer. Undignified, effective, free.
- Gate check with a fee. The bag goes in the hold and you pay a checked-bag or gate-handling fee, often at the airline's highest rate since airport prices exceed online prices.
- Gate check without a fee. On full flights when the airline wants bins cleared anyway, an overweight bag sometimes just gets checked free. Do not plan around getting lucky.
Where and how carriers check also varies: some weigh at check-in, some spot-check at the gate, and strict low-cost carriers weigh nearly everyone. If a bag is gate checked, pull out batteries, medications, valuables, and documents first. They belong on your person, not in the hold.
Common questions
How much can a carry-on weigh?
On most US domestic flights, there is no published number; you must be able to lift the bag into the bin unassisted. On most international carriers, the published limit is 7 to 12 kg (15 to 26 lb), with 7 kg the most common figure in economy. Always confirm with your airline, because allowances change.
Do airlines actually weigh carry-on bags?
US majors almost never do domestically. International and low-cost carriers do, at check-in or at the gate, and strict carriers like many 7 kg airlines enforce routinely. A bag that looks heavy invites the scale.
Does the weight limit include the personal item?
It depends on the airline. Some publish per-bag limits, others a combined cabin allowance; Air France's 12 kg covers the cabin bag and personal item together, while British Airways' 23 kg is per bag. Read the specific rule, not just the number.
Is aluminum luggage too heavy for a 7 kg limit?
It is workable but tight. An aluminum carry-on typically weighs 9 to 11 lb empty as a category, which leaves roughly 4 to 6 lb for contents under a 7 kg cap. Frequent flyers on strict carriers manage it with minimal packing lists; if your flying is mostly US domestic, the limit rarely comes into play at all.
What is the lightest way to stay under a strict limit?
Wear the heaviest clothes and shoes, carry a softside or light personal item for dense small things where per-bag rules allow it, pack solid toiletries, and weigh the bag at home the night before. The airport is the most expensive place to discover a heavy bag.
Where a TALO case fits
The TALO 20" Carry-On is an aluminum case, so it sits at the heavier end of the empty-weight spectrum, and it earns that with a ribbed anodized shell, TSA-approved frame latches instead of zippers, and lifetime service on wheels, latches, handles, and the telescoping trolley. Built to standard cabin sizing for major US airlines, it is sized for the bin on every US major; on strict 7 kg international carriers, pair it with the packing discipline above. See The 20" Carry-On.
