How big can a carry-on backpack be?

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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With plenty of space to pack bulky clothes, we think the Nomatic Travel Bag 40L would make an excellent carry-on backpack for any and all types of trips since it can be carried multiple different ways—which also makes it an ideal convertible bag.

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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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This time, we went for the 30L Kono Backpack (£32.99). This is actually the correct size for easyJet. However, those dimensions alone are too big for Ryanair and Wizz Air's baggage allowance.

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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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You are allowed a single personal item, like a backpack, however, your Ryanair cabin bag can't be larger than 25 cm x 40 cm x 20 cm. Customers with Priority tickets can bring one personal item and one piece of carry-on luggage that doesn't weigh more than 10 kilograms and isn't larger than 55 cm x 40 cm x 20 cm.

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Size and Weight Restrictions 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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What is this? Ryanair say the size of the free small carry-on bag is 40 x 20 x 25cm and can be a maximum of just 20 litres and I quote from their website 'must be able to fit under the seat in front of you.

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Yes, it can fit in the overhead bin or under the seat. The backpack measures 18x14x8 inch and fits perfectly under the seat as a personal item when stuffed with clothes. And you don't have to pay any extra for this backpack at the airport.

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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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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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Most regular airlines won't check the size, unless it's obviously way larger or heavier than your allowance, but you may need to consider where is that extra inch, if it's too wide/thick, it may not fit in the baggage overhead compartment and a flight attendant may check it in for you…

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Anything around the 40-45 liter mark should still be carry-on compliant depending on the dimensions and the airline. They make for great travel bags where you don't want to check in luggage. Even if you're a heavy packer, you should be able to take a 45L pack away for a weekend.

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The 32L Travel Bag does not fit under airplane seats and is usually best-stowed overhead as it meets most airline max carry-on dimensions.

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Small personal item Ryanair gives examples of a 'handbag, laptop bag or small backpack'. The airline states it cannot be larger than 40 x 20 x 25 centimeters (15.7 x 7.9 x 9.8 inches), but there is no weight limit. It should be stored under the seat in front of you.

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Ryanair gives examples of a 'handbag, laptop bag or small backpack'. The airline states it cannot be larger than 40 x 20 x 25 centimeters (15.7 x 7.9 x 9.8 inches), but there is no weight limit.

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If your small bag or 10kg cabin bag does not fit in the baggage sizers, which are placed at every boarding gate, we will tag your bag and place it in the aircraft hold subject to payment of a gate bag fee.

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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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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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If you're wondering whether you can use a backpack as a carry-on for air travel, the answer is a resounding yes! In addition to being a practical option for air travel, backpacks can be an excellent choice for those seeking convenience and ease during their journey.

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