New carry on luggage rules vary by airline but typically limit size to 22x14x9 inches (56x36x23 cm) and restrict liquids to 3.4 oz (100 ml) containers. Airlines enforce these rules to ensure safety and space efficiency.
Most airlines measure luggage at check-in using sizers. If your bag exceeds dimensions, you may face checked baggage fees. Some budget airlines charge for carry-ons unless you pre-book them.
| Category | Typical Limits |
|---|---|
| Size | 22x14x9 inches (56x36x23 cm) |
| Weight | 15-22 lbs (7-10 kg) |
| Liquids | 3.4 oz (100 ml) per container, 1 quart/liter-sized clear bag |
| Quantity | 1 carry-on + 1 personal item (e.g., purse, laptop bag) |
Airports worldwide enforce these rules for safety and operational efficiency. The International Air Transport Association (IATA) recommends consistent global standards. Airlines implement their own policies to maximize cabin space and reduce delays.
For example, Delta Air Lines allows one carry-on and one personal item, while Spirit Airlines charges $35-$65 for carry-ons unless you pre-pay online. Always check your airline's specific policy before packing.
Many travelers confuse airline policies with TSA security rules. While TSA sets security standards (like liquid limits), airlines determine size and quantity allowances. For instance, TSA permits electronic devices but doesn't specify carry-on dimensions.
Another mistake is assuming all airlines have identical rules. Budget carriers often have stricter policies than full-service airlines. For example, Ryanair charges extra for carry-ons larger than 20x17x8 inches (50x40x20 cm).
When flying with American Airlines, your carry-on must fit in their sizer (22x14x9 inches). Your personal item (like a backpack) should fit under the seat. Pack liquids in a 1-quart clear bag with each container under 3.4 oz. At check-in, place your carry-on in the sizer. If it fits, you're good to go.
I once packed a slightly oversized bag for a United flight. At check-in, it didn't fit the sizer, and I had to pay $30 to check it. Now I always measure my luggage beforehand.