Personal itemsThese items must fit under the seat in front of you, so they must be 9 in x 10 in x 17 in (22 cm x 25 cm x 43 cm). Common things include purses, backpacks and laptop bags. If you're at the airport and not sure if your bag is the right size, you can use our bag sizers to measure your bag.
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Airlines may sometimes ask you to buy a new seat in order to fit your big item. Then, the additional fee will be significant. Even worse, if your personal item is too large or heavy, it is possible that you have to leave it or be denied entry.
United Airlines Carry-On BaggageOne full-sized carry-on bag 9 inches x 14 inches x 22 inches (22 cm x 35 cm x 56 cm) plus one personal item 9 inches x 10 inches x 17 inches (22 cm x 25 cm x 43 cm). If you are travelling on a Basic Economy ticket, your personal item will be the only item you can bring on board.
In general, your personal item should be smaller than your carry-on and under the specific airline's carry-on dimensions, allowing it to fit under the seat in front of you. In most cases, backpacks are considered personal items as long as they fit under the seat in front of you.
Most airlines maintain carry-on item measuring racks in front of the check-in counter and/or gate service counter. Technically, if your bag (or other type of carry-on item) won't fit completely into that rack, it is oversized and must be checked.
Your bag will have to fit into the sizer for it to be approved as a carry-on. Having a flexible fabric bag is advantageous in this situation because you'll be able to squeeze it in even if it's slightly oversized. Usually, many airlines won't check every carry-on but will instead go for ones that look oversized.
While United's carry-on policy has limited luggage size, there is no maximum weight allowance. If you can fit it into your carry-on bag and it's acceptable to bring on board, it doesn't matter how much carry-on items weigh.
A personal item is any type of luggage that fits underneath the plane seat in front of you. Most domestic airlines in the United States require a personal item to be 18” x 14” x 8” or smaller in size. Personal items can include a purse, briefcase, small backpack, laptop bag, weekender or small duffel bag.
If your carry-on is oversized (and doesn't physically fit inside the overhead compartments) or you encounter a strict airline employee, they will ask you to check it in at the gate.
How strict are the airlines about luggage dimensions? Carryon dimensions are limited to the size of the overhead bin. In those cases dimensions are strict. Anything too big gets gate checked.
Some airlines also publish weight limits. Volume: A 45L backpack is the maximum-sized carry on allowed on most US airlines. For international or budget airlines, choose a bag under 40L. If you want to pack ultralight, anything 35L or under can be carried on virtually any airline.
As a general rule of thumb, anything smaller than the dimensions of a carry-on can be considered a personal item. However, every airline has different restrictions for size. In most cases, your backpack should be no more than 18 x 14 x 8 inches.
Capacity: 35L. This luggage backpack is meet the allowed maximum size of most IATA flights and also fits in the overhead compartment and the underseat in flight. The portable opening facilitates you to quickly pass the airport security check.
Firearms, ammunition, and fireworks are prohibited, as are all knives and safety razors (including pocket knives and Swiss Army knives). Straight razors and replacement blades for straight razors are also not allowed. Most tools also cannot be packed in carry-on luggage, as they have the potential to cause harm.
In general, travelers are permitted to bring into the plane one personal item and one carry-on bag with them on most flights. The personal item is often a small bag, such as a handbag or laptop bag, that is able to be stowed away beneath the seat that is directly in front of you.