Carry-on weight limits vary by airline, but most fall between 22 and 26 pounds
The weight your carry-on bag can be depends on which airline you fly. Most major U.S. carriers—including American, Delta, Southwest, and United—allow carry-on bags up to 22 pounds (10 kilograms). Some airlines, like Alaska and JetBlue, permit up to 24 pounds. A few international carriers set the limit at 26 pounds or higher. The rule applies to your personal item (purse, backpack, laptop bag) separately, which typically has no weight restriction as long as it fits under the seat.
Airlines measure carry-on weight at check-in if they choose to weigh your bag. In practice, many gate agents do not weigh carry-ons unless the bag looks oversized or the flight is full. However, if your bag is weighed and exceeds the limit, you will be asked to check it, which may incur a fee on some carriers. The safest approach is to pack light enough that your bag feels manageable to lift into the overhead bin.
Key Takeaways
- Most U.S. airlines allow carry-on bags weighing up to 22 pounds, though some permit 24 to 26 pounds.
- Your personal item (purse, backpack, or small bag) usually has no weight limit as long as it fits under the seat in front of you.
- Weight limits are enforced at the gate, not always at the ticket counter, and enforcement varies by how full the flight is.
- If your carry-on exceeds the airline's limit and you are asked to check it, you may face a checked baggage fee depending on your ticket type and airline.
- Checking your airline's website before packing tells you the exact weight and size rules for your specific flight.
How airlines measure and enforce carry-on weight
Airlines have the authority to weigh carry-on bags, but they do not always do so. Weight checks typically happen at the gate rather than at the ticket counter. Gate agents are more likely to weigh bags on flights that are full or when overhead bin space is running short. If your bag is weighed and found to be over the limit, the agent will ask you to check it instead.
The process is straightforward: the agent places your bag on a scale, reads the weight, and compares it to the airline's limit. If it is under the limit, you board with it. If it exceeds the limit, you have two options: remove items and repack on the spot (if you have time), or check the bag. Checked baggage fees vary—some airlines charge $35 to $50 for the first checked bag, while others include one free checked bag with your ticket type.
Carry-on weight limits by major U.S. airline
| Airline | Carry-On Weight Limit | Personal Item Weight Limit |
|---|---|---|
| American Airlines | 22 pounds (10 kg) | No limit |
| Delta Air Lines | 22 pounds (10 kg) | No limit |
| Southwest Airlines | 22 pounds (10 kg) | No limit |
| United Airlines | 22 pounds (10 kg) | No limit |
| Alaska Airlines | 24 pounds (11 kg) | No limit |
| JetBlue Airways | 24 pounds (11 kg) | No limit |
| Spirit Airlines | 22 pounds (10 kg) | No limit |
| Frontier Airlines | 22 pounds (10 kg) | No limit |
These limits explore to standard carry-on bags. Some airlines offer premium cabin classes (first class, business class) with higher limits, but most passengers on domestic flights follow the standard rules above. International carriers often have different limits—check your specific airline's website before you pack.
What counts as a personal item versus a carry-on bag
Airlines distinguish between two types of bags you can bring aboard: a personal item and a carry-on bag. Your personal item is a small bag that fits under the seat in front of you—typically a purse, backpack, laptop bag, or small crossbody bag. This item has no weight limit on most airlines. Your carry-on bag is a larger piece that goes in the overhead bin—usually a rolling suitcase or soft-sided bag. This is the bag subject to the 22- to 26-pound weight limit.
You are allowed one of each: one personal item and one carry-on bag. If you bring a rolling suitcase as your carry-on, you can still bring a purse or backpack as your personal item. The personal item weight does not count toward your carry-on limit. However, if your personal item is so large or heavy that it would normally be checked, an agent may ask you to check it instead.
Tips for packing a carry-on within the weight limit
The easiest way to stay under the weight limit is to pack light from the start. Aim to fill your bag only three-quarters full rather than stuffing it completely. This leaves room for items you pick up during travel and keeps the bag from feeling heavy when you lift it. Choose clothing made from lightweight fabrics, and limit yourself to one pair of shoes plus the pair you wear on the plane.
Use a luggage scale at home before you head to the airport. Bathroom scales work in a pinch: weigh yourself, then weigh yourself holding the bag, and subtract. Many luggage stores and some airports have scales available for a small fee. Pack heavier items (shoes, toiletries, electronics) in your personal item if it has room, since personal items are not weighed. Leave behind items you can buy at your destination, such as toiletries or a book.
What happens if your carry-on is overweight
If your bag is weighed at the gate and exceeds the limit, the agent will ask you to check it. You then have a few minutes to decide: remove items and repack, or let the bag be checked. If you choose to check it, you will pay a checked baggage fee unless your ticket includes free checked bags. Most basic economy tickets on budget airlines do not include free checked bags, while full-fare economy tickets on major carriers usually do.
To avoid this situation, weigh your bag before leaving home. If it is close to the limit, remove a few items or pack lighter. On the day of travel, arrive early enough that you have time to repack at the ticket counter if needed. If you frequently travel with carry-on only, consider investing in a lightweight rolling bag designed to stay under airline limits—many weigh 5 to 7 pounds empty, leaving you 15 to 17 pounds for clothing and other items.
International airline carry-on weight limits
International carriers often have different carry-on weight limits than U.S. airlines. European carriers like Lufthansa, Air France, and British Airways typically allow 26 pounds (12 kilograms) for carry-on bags. Some Asian carriers, including Singapore Airlines and Cathay Pacific, permit 26 to 28 pounds. Budget international carriers may have lower limits—some set carry-on weight at 18 to 22 pounds.
If you are flying internationally, check your specific airline's baggage policy on their website before packing. The rules may differ depending on which cabin class you booked and whether you are flying a long-haul or short-haul route. Many international airlines are stricter about enforcing weight limits than U.S. carriers, so packing conservatively is wise.
Frequently Asked Questions
Do airlines actually weigh carry-on bags?
Not always. Weight checks happen most often at the gate on full flights or when overhead bin space is limited. If your bag looks reasonably sized and not overstuffed, it may never be weighed. However, airlines have the right to weigh any carry-on, so packing within the limit is the safest approach.
Can I bring a carry-on bag and a personal item on the same flight?
Yes. You are allowed one personal item (purse, backpack, laptop bag) and one carry-on bag (rolling suitcase) on the same flight. The personal item goes under the seat; the carry-on goes in the overhead bin. Only the carry-on bag is subject to the weight limit.
What if my carry-on bag is under the weight limit but too large to fit in the overhead bin?
Size limits are separate from weight limits. Your bag must meet both the airline's weight limit and its size limit (usually around 22 x 14 x 9 inches for U.S. carriers). If your bag is within the weight limit but oversized, an agent may still ask you to check it. Check your airline's website for both weight and dimension requirements.
Do I pay a fee if my carry-on is checked at the gate?
Not for the bag itself being checked. However, if your ticket does not include a free checked bag, you may owe a checked baggage fee (typically $35 to $50 on U.S. carriers). Basic economy fares often do not include free checked bags, while standard economy and higher fares usually do.
How much does a typical carry-on suitcase weigh empty?
Most rolling carry-on suitcases weigh between 5 and 9 pounds empty. Lightweight models designed for carry-on travel can weigh as little as 4 to 5 pounds. Heavier bags may weigh 10 to 12 pounds empty, leaving less room for your belongings within the airline's weight limit.