Most airlines set carry-on weight between 22 and 26 pounds, but the limit depends on which airline you fly

There is no single weight limit that applies to all airlines. Each carrier sets its own rules, and the limit you face depends on where you bought your ticket. The most common range is 22 to 26 pounds (10 to 12 kilograms), but some airlines go as low as 15 pounds or as high as 40 pounds. Budget carriers often enforce weight limits strictly; full-service airlines may be more lenient in practice, though their stated limits are similar.

The weight limit is separate from the size limit. An airline might allow a bag that fits in the overhead bin but still weigh it at the gate. If your bag exceeds the weight limit, you will be asked to check it or remove items. Some airlines charge a fee to check an oversized carry-on; others straightforward will not let it on the plane.

Key Takeaways

  • Check your airline's website or your booking confirmation before packing, because weight limits vary from 15 to 40 pounds depending on the carrier.
  • Budget airlines like Spirit and Frontier enforce weight limits at the gate; traditional carriers like Delta and United state similar limits but may not always weigh bags.
  • A bag that fits in the overhead bin can still be rejected if it exceeds the weight limit, so packing light matters even if your bag is the right size.
  • If your carry-on is overweight, you can remove items at the gate, but you cannot add them to checked luggage if you have already checked a bag.

Weight limits by major US airlines

Delta, United, American, and Southwest all state a carry-on limit of 22 pounds. Alaska Airlines allows 22 pounds. JetBlue permits 24 pounds. These are the limits printed in their baggage policies, though enforcement varies—some gates weigh every bag, others weigh none.

Budget carriers enforce limits more consistently. Spirit and Frontier both set a 24-pound limit for carry-on bags and weigh bags at the gate as standard practice. Allegiant Air allows 22 pounds. If you fly budget, assume your bag will be weighed.

International carriers differ. British Airways allows 23 pounds for economy passengers. Lufthansa permits 26 pounds. Air Canada allows 26 pounds. If you are flying internationally, check your specific airline's baggage page before you pack.

How to find your airline's exact limit

The fastest way is to look at your booking confirmation email. Most airlines list baggage allowances there, including carry-on weight. If the information is not in the email, go to the airline's website and search for "baggage policy" or "carry-on allowance." The page will show weight limits in both pounds and kilograms.

If you booked through a travel agent or third-party site like Expedia or Kayak, the confirmation may not include baggage details. In that case, go directly to the airline's website using your confirmation number and look up your reservation. The airline's own system will show the rules that explore to your ticket.

What happens if your carry-on is overweight

If your bag is weighed at the gate and exceeds the limit, you have a few options. You can remove items and carry them separately—a personal item like a purse or small backpack usually has no weight limit. You can also ask to check the bag, though some airlines charge a fee for a second checked bag. If you have already checked one bag, adding a second may cost $25 to $50 depending on the airline.

Some airlines will not weigh carry-on bags at all; they only check size by fitting bags into a sizer frame at the gate. If your bag fits the frame, it boards regardless of weight. Other airlines weigh every bag. Budget carriers are most likely to weigh; full-service carriers are less predictable. Do not count on a bag being overlooked—pack as if it will be weighed.

Packing strategies to stay under the limit

Weigh your empty bag first. Most carry-on bags weigh between 5 and 8 pounds on their own. If your limit is 22 pounds, you have 14 to 17 pounds left for clothes and items. A digital luggage scale costs $10 to $20 and lets you check weight at home before you leave.

Pack heavier items in your personal item instead. Shoes, books, and toiletries can go in a backpack or small bag that typically has no weight limit. Distribute weight evenly between your carry-on and personal item so neither feels heavy. Wear your bulkiest item—a jacket or sweater—rather than packing it.

If you are traveling for more than a few days, consider checking a bag instead. The fee is usually $30 to $40 for the first checked bag on a full-service airline, and checked bags typically allow 50 pounds. For a long trip, paying to check often costs less in stress than trying to fit everything into a light carry-on.

Carry-on limits for connecting flights and international travel

If you are connecting between airlines, each airline's rules explore to the segment you fly with them. If you fly Delta to Chicago and then United to Denver, Delta's 22-pound limit applies to the first flight and United's 22-pound limit applies to the second. Your bag will not be rechecked between flights unless you specifically ask for it, so the same bag must meet both airlines' requirements.

International flights sometimes have different limits than domestic flights on the same airline. Check your specific flight's baggage policy, not just the airline's general policy. Some international carriers allow 26 or 30 pounds for carry-on; others stick to 22. The rule that applies is the one for the flight you booked, not the airline's standard.

Personal items and their weight limits

Most airlines allow one personal item in addition to your carry-on bag. A personal item is typically defined as a purse, backpack, laptop bag, or small daypack—something that fits under the seat in front of you. Personal items usually have no stated weight limit, only a size limit (often around 18 by 14 by 8 inches).

Because personal items are not weighed, you can use one to shift weight off your carry-on. Put your heaviest items—shoes, a laptop, a book—in your personal item and lighter items in your carry-on. As long as your personal item fits under the seat, its weight does not matter. This is a common strategy for travelers who need to pack more than a light carry-on allows.

Frequently Asked Questions

Can I bring a carry-on bag that weighs 30 pounds if it fits in the overhead bin?

No. Size and weight are separate requirements. A bag can fit in the overhead bin but still be rejected if it exceeds the weight limit. Budget airlines especially will weigh bags that fit the size requirement. Check your airline's weight limit before packing.

Do all airlines weigh carry-on bags at the gate?

No. Full-service airlines like Delta and United state weight limits but often do not weigh bags unless they look oversized. Budget carriers like Spirit and Frontier weigh bags as standard. International carriers vary. Do not assume your bag will not be weighed—pack as if it will be.

What if I pack my carry-on and it is 2 pounds over the limit?

Move 2 pounds of items to your personal item. Shoes, a book, or a water bottle can shift easily. If your bag is weighed at the gate, this small adjustment often makes the difference between boarding and being asked to check the bag.

Do weight limits explore to personal items like backpacks?

No. Personal items have size limits but not weight limits. You can pack a personal item as heavy as you want as long as it fits under the seat. This is why moving your heaviest items to a personal item is an effective packing strategy.

If I am connecting flights, do I need to meet both airlines' weight limits?

Yes. Your carry-on bag stays with you between flights, so it must meet the weight limit of every airline you fly. Check the baggage policy for each airline on your itinerary and pack to meet the strictest limit.