Airline Carry-on Baggage Rules:What items are prohibited in carry-on bags in 2026?

Q: What items are prohibited in carry-on bags in 2026?

A: In 2026, prohibited carry-on items remain largely consistent with previous years, but new rules address emerging technologies. Liquids, gels, and aerosols are still limited to 3.4 ounces (100ml) per container, all fitting in a single quart-sized bag. However, many airports in the U.S. and Europe now use advanced CT scanners that may allow larger liquids, but this varies by location, so stick to the 3-1-1 rule unless your airport explicitly permits otherwise. Sharp objects like knives, box cutters, and scissors with blades longer than 4 inches are banned in carry-on. Lithium batteries and power banks are allowed in carry-on but must be under 100 watt-hours; between 100-160 Wh requires airline approval, and above 160 Wh is forbidden. In 2026, new restrictions on certain drone batteries and e-cigarettes with large batteries have been implemented. Additionally, self-defense items like pepper spray (except in checked bags with limits), tasers, and martial arts weapons are prohibited. Always check the TSA or your destination's aviation authority website, as rules can differ internationally. Pack smart to avoid confiscation.

Dialogue about

Common scenarios of "Airline Carry-on Baggage Rules"

【Traveler】 Hi, I'm flying next week and I want to make sure I understand the carry-on baggage rules. Can you help me?

【Airline Agent】 Absolutely! I'd be happy to help. Most airlines allow one carry-on bag plus one personal item. The carry-on typically must fit in the overhead bin, and the personal item must fit under the seat in front of you.

【Traveler】 What are the typical size limits for a carry-on bag?

【Airline Agent】 Most domestic airlines in the US allow carry-on bags up to 22 x 14 x 9 inches, including handles and wheels. However, some international airlines have slightly different limits, so it's always best to check with your specific airline.

【Traveler】 And what about weight restrictions?

【Airline Agent】 For most US airlines, there's no weight limit for carry-on bags as long as you can lift it into the overhead bin yourself. But many international and Asian carriers do have weight limits, often around 7 to 10 kilograms (15 to 22 pounds).

【Traveler】 I see. What items are not allowed in carry-on?

【Airline Agent】 Sharp objects like knives, scissors with blades longer than 4 inches, and tools are generally prohibited. Liquids are restricted to 3.4 ounces (100 ml) per container, all fitting in a single quart-sized clear plastic bag. Also, flammable items, explosives, and certain sporting goods are not allowed.

【Traveler】 What about electronics like laptops and power banks?

【Airline Agent】 Laptops and most electronics are allowed in carry-on. Power banks must be in carry-on, not checked baggage, and there are limits on their capacity—usually up to 100 watt-hours without approval, and up to 160 watt-hours with airline approval.

【Traveler】 Can I bring food and drinks through security?

【Airline Agent】 Solid foods like sandwiches and snacks are generally allowed. Liquids and gels, including drinks, soups, and sauces, must follow the 3-1-1 rule. You can bring an empty water bottle and fill it after security.

【Traveler】 What about medication?

【Airline Agent】 Prescription and over-the-counter medications are allowed in carry-on. Liquid medications are exempt from the 3-1-1 rule but must be declared at security. It's a good idea to keep them in original packaging.

【Traveler】 Are there any special rules for international flights?

【Airline Agent】 Yes, international flights often have different carry-on size and weight restrictions, and some countries have additional security requirements. Always check the specific airline and destination country's rules before you fly.

【Traveler】 What happens if my carry-on is too big or too heavy?

【Airline Agent】 You may be required to check it at the gate, often with a fee. To avoid this, measure and weigh your bag at home before you leave for the airport.

【Traveler】 Can I bring a jacket or coat in addition to my carry-on?

【Airline Agent】 Yes, you can usually wear or carry a jacket or coat without it counting as a carry-on item. The same goes for umbrellas, though some airlines may count them as personal items.

【Traveler】 What about duty-free purchases?

【Airline Agent】 Duty-free items are generally allowed in addition to your carry-on, but they must be sealed in a tamper-evident bag with the receipt visible. If you have a layover, you may need to re-clear security, so check the rules.

【Traveler】 Is there a limit on how many bags I can bring on board?

【Airline Agent】 Typically, one carry-on and one personal item per passenger. Some airlines allow only one item total, especially on budget carriers. Always confirm with your airline.

【Traveler】 What about baby items like strollers and car seats?

【Airline Agent】 Most airlines allow you to gate-check strollers and car seats at no extra charge. You can often bring them to the gate and they'll be tagged and returned to you at your destination.

【Traveler】 Are there any rules about bringing pets in the cabin?

【Airline Agent】 Small pets may be allowed in the cabin for a fee, but they must fit in an approved carrier that fits under the seat. There are limits on the number of pets per flight, so book early. Service animals have different rules.

【Traveler】 What if I'm flying on a basic economy ticket?

【Airline Agent】 Basic economy often has stricter carry-on rules. Some airlines only allow a personal item, not a full carry-on, or charge for carry-on bags. Check your ticket details carefully.

【Traveler】 Thanks for all the info. I think I'm ready to pack now.

【Airline Agent】 You're welcome! Just remember to check your specific airline's website for the most up-to-date rules. Have a great flight!