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How do airports check luggage size?

Airport workers use linear dimensions to decide whether your bag is legitimate. Clerks will use a measuring tape to gauge any luggage's height, width and length. They then calculate the sum total of each measurement and get linear inches.



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Airlines publish the maximum dimensions allowed for carry-on bags. For example, American Airlines states that a carry-on bag's dimensions cannot exceed 22 by 14 by 9 inches, including handles and wheels. The carry-on must also fit into the sizer at the airport; if it doesn't, you'll be required to check it.

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In general, if you're bag is not within the size restrictions at the check-in counter, different airlines will charge you a late check-in fee.

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In general, standard domestic carry-on luggage size is 22 x 14 x 9 inches. If you're flying internationally, that may vary a little to 21.5 x 15.5 x 9 inches. Remember, those dimensions include the handle, wheels and anything else that may protrude from your suitcase so don't miss them from your measurements.

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Measuring the size of your luggage isn't tricky. Most airlines require that your bag be 62 linear inches or less. Therefore, your bag's length, width and height cannot exceed 62 inches. This measurement includes the wheels and the handle of your luggage.

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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.

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Just a marginal difference in size is usually passed. But if your baggage looks huge and oversized, they will not deny you. They will ask the contents and may be charge you (depends on baggage policy of each airline).

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Airlines publish the maximum dimensions allowed for carry-on bags. For example, American Airlines states that a carry-on bag's dimensions cannot exceed 22 by 14 by 9 inches, including handles and wheels. The carry-on must also fit into the sizer at the airport; if it doesn't, you'll be required to check it.

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For most airlines, the largest luggage size for check-in is 62 linear inches. This means the total length + width + depth must equal 62 inches or less. RELATED: Our luggage size guide takes the guesswork out of measuring your bags before you get on the plane.

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There are usually five types of items that security officers look for. They are liquids, powders, batteries, sharp objects, and organic materials. Each of these can be detected by the baggage scanners. A TSA agent will likely pull any flagged baggage for manual inspection.

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As a result, prohibited items may result in both a TSA civil enforcement action and a criminal enforcement action. Before leaving home, remember to check your baggage to ensure you are not carrying any prohibited items to avoid a possible arrest and/or civil penalties.

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Carry-on bags are limited to 22 inches long, 14 inches wide and 9 inches high including wheels and handles. All three measurements shouldn't add up to more than 45 inches.

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United Airlines (UA) will charge the following for U S domestic flights for bags that are greater than the standard 50 pounds or 23 kilograms: 51 to 70 pounds or 24 to 32 kilograms: $100.00 USD to $200 USD extra per bag. 71 to 100 pounds or 33 to 46 kilograms: $400.00 USD extra per bag.

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Can a 24 inch luggage be a carry on? Unfortunately no, the standard carry-on size is typically 22” x 14” x 9”, so a 24 inch bag is too large to bring on board of most economy standard airlines.

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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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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.

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