How strict are airline carry on rules?

Including handles and wheels, the maximum dimensions for a carry-on are 22 inches long, 14 inches wide and 9 inches high. Personal items are limited to 17 inches long, 10 inches wide and 9 inches high.



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TSA screens approximately 4.9 million carry-on bags for explosives and other dangerous items daily. Here's what to expect when taking your carry-on bag through security screening next time you fly.

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Personal items should fit under the seat in front of you. Examples include laptop cases, purses, camera bags, diaper bags, small backpacks and duffels. Some airlines publish maximum dimensions for personal items. Most domestic airlines specify 22 inches by 14 inches by 9 inches as the maximum size for carry-on baggage.

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Oversized Carry-Ons Need to Be Checked-in
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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It is rare for airlines to weigh your carry on or hand luggage. So long as your bag is not clearly overweight, and you're able to carry it with ease – you shouldn't have any issues with a slightly overweight bag.

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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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If your bag is too large and it isn't flexible, you won't be able to fit it inside. But airlines rarely ask you to use it. What is this? Unless your carry-on is extremely large, the airline employees at the gate most likely won't ask to measure it.

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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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While the bag shouldn't exceed the maximum dimensions of 45 linear inches, there may be some leeway depending on the airplane you're flying on. Overhead compartment sizes vary per airplane type. If you fly on an airplane with small overhead compartments, you will likely get busted for having an oversized carry-on.

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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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Carry-on requirements
  • Shouldn't exceed 22 x 14 x 9 inches / 56 x 36 x 23 centimeters (including handles and wheels)
  • Must fit in the sizer at the airport.


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You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes through the checkpoint. These are limited to 3.4 ounces (100 milliliters) or less per item. This is also known as the 3-1-1 liquids rule.

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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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Yes, toothpaste is considered a liquid when flying and must be within the 3.4oz (100ml) limit for liquids in order to bring it in your carry-on bag. Any amount larger than that must be checked with your luggage.

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Restricted Items NOT Allowed on a Plane in Your Carry-On
  • Sharp objects. ...
  • Sporting goods and athletic equipment. ...
  • Self defense items. ...
  • Gel-type candles. ...
  • Large quantities of alcohol (more than 3.4 ounces) ...
  • Guns and ammunition.


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For most airlines and flights, a carry on duffle bag must be no larger than 22 x 14 x 9 inches or 45L. These dimensions tend to be more common for suitcases and backpacks. Duffles are longest in one dimension with similar measurements in the other two dimensions.

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While it may vary from airline to airline, the maximum duffel bag carry-on size is typically 22 x 14 x 9 inches for flights within the U.S. Bag size limitations on international flights can vary, so always check ahead of time on the airline's website.

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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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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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What if my cabin bag is 2cm bigger? Extra 2–4 cm wont be noticed by the check in staff and they dont have a ruler to measure the dimension. they only strict with the weight. But extra 2–3 kg is also not a problem.

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Yes, toothpaste must adhere to the 3-1-1 rule for liquids and gels. Toothpaste can be brought through TSA security in your carry-on as long as it is 3.4 ounces (100 milliliters) or less and placed in a 1-quart bag. If your toothpaste is bigger, put it in your checked luggage or purchase some upon arrival.

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Most airlines allow passengers to bring on both a carry-on and a personal item like a backpack, laptop bag, purse, briefcase, shopping bag, etc. The general rule of thumb is that your personal item is smaller in dimension than your carry-on bag and it can fit underneath the seat in front of you.

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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.

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