What do airlines consider a small backpack?

Here's a breakdown of a few popular airlines' guidelines for personal item size restrictions: American Airlines advises customers to travel with personal items that are no larger than 18 inches x 14 inches x 8 inches. If you are flying on Delta, be sure your personal item is 17 inches x 13 inches x 9 inches or smaller.



Most airlines in 2026 define a "small backpack" as a personal item that must fit entirely under the seat in front of you. Standard dimensions are typically around 18 x 14 x 8 inches (45 x 35 x 20 cm). If your backpack is larger than this, or if it has an internal frame that prevents it from being squished under the seat, the airline will likely classify it as a "carry-on bag," which may require you to pay a fee or use the overhead bin. For budget carriers like Ryanair or Spirit, this distinction is critical, as they strictly enforce these measurements at the gate. A standard school-sized backpack (20–25 liters) usually qualifies as a personal item, but a "hiking" backpack or a 40-liter travel pack will almost certainly be treated as a full carry-on. Always check your specific 2026 fare rules, as "Basic Economy" tickets often permit only this small personal item.

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American Airlines advises customers to travel with personal items that are no larger than 18 inches x 14 inches x 8 inches. If you are flying on Delta, be sure your personal item is 17 inches x 13 inches x 9 inches or smaller.

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While personal item size restrictions vary across airlines, most airlines consider a small backpack, purse, briefcase, or laptop bag to be a personal item. These must always fit under the seat in front of you. Many airlines restrict passengers to one personal item and one carry on bag.

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? Flight Approved Carry on Backpack: Size of travel backpack: 20.47 x 12.99 x 8.66 . 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.

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The best carry-on travel backpack size Your backpack will generally be allowed as a carry-on if it's under 50 liters, or about 22 x 14 x 9 inches. Get a 45-liter backpack if you want to carry as much stuff as possible on the plane with you.

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Usually, many airlines won't check every carry-on but will instead go for ones that look oversized. If your luggage does not fit in the sizer, you might have to pay a checked bag fee along with the gate checking fee and have your bag transferred to the airplane's cargo.

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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.

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Most airlines allow backpacks as carry-ons, but size and weight restrictions vary depending on the carrier. Typically, the bag must be within the cabin baggage dimensions of around 22 x 14 x 9 inches (56 x 36 x 22 cm), commonly considered the standard size for carry-on.

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It is stated that one carry-on bag and one personal item are allowed per passenger. The dimensions of the under-seat compartment are 18 x 14 x 8 inches, which applies to all cabin and flight configuration.

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Most airlines will allow you to check one bag and have one carry-on bag. There is normally a maximum weight limit of 50 pounds per checked bag as well as a size restriction. The most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14.

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Weighing. If you have both checked and carry on luggage, usually both are going to be weighed at the check-in/luggage drop. If you only have a carry on and check-in online you have small chances to have your luggage weighed, however it might not be true if you apparently struggle with it.

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While most backpacks, purses, and briefcases can pass as personal items, a large camping backpack probably won't fit under the airplane seat. Most airlines publish specific measurements for what counts as a personal item.

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The short answer: Yes, a backpack is generally considered a personal item if it fits under the seat in front of you. Most airlines offer a few examples of things that fit into the “personal item” category, such as a purse, laptop bag, or a briefcase, but they don't usually include “backpack” on those lists.

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Carry-on Luggage Size Matters Generally, most of the European airlines limit carry-on luggage to a maximum size of 55 x 40 x 20 cm ( 21.6 x 15.7 x 7.8 in); however, a few airlines do accept bags up to 25 cm wide (9.84 inc) or do not accept more than 35cm tall (13.7 in).

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With backpacks this size, it is essential that they fit you properly. TRAVEL: A 50L+ backpack is a great friend to those travelling for a few weeks.

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Yes. The usual maximum dimensions for carry-on luggage are 9 inches x 14 inches x 22 inches (22 centimeters x 35 centimeters x 56 centimeters). This is 43.12L, so your 50L backpack is about 16% too big. You might get away with it because the gate staff often doesn't (have the time to) check the bag sizes in all detail.

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While some airlines specify size limitations for personal items, others simply require the item to be small enough to fit underneath the seat in front of you. For personal items, here's the standard size on major airlines in the United States: American Airlines – 18” x 14” x 8”

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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.

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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.

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For example, American Airlines requires that the sum of three sides does not exceed 36 inches (92cm), and Northwest Airlines requires that it does not exceed 15 inches × 11 inches × 6 inches ( 38 cm×28 cm×15 cm). Therefore, if you bring a 60L backpack, don't pack it too full.

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The design of the 70L is perfectly suited for airplane carry-on or check in, and the features of the 70L are perfect for any adventure once you arrive at your destination. Being able to compress the 70L allows you to use it as carry-on for all major airlines in the US and Canada.

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