Do I need to check in my carry-on bag?

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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Yes, you can refuse, but if you bag cannot be safely stowed, either in the overhead, under the seat or, in rare cases, in the closet, it will not be allowed in the cabin and you will probably not be allowed to fly.

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A carry-on bag goes on the plane with you and must fit in the overhead compartment. Checked luggage is relinquished to the airline at the airport and stored in the plane's cargo hold area, which is inaccessible to you during your flight.

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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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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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If you are checking bags in you can go straight to the bag drop off points for your airline. Some airlines are now making this self-service where you print your own tags and fix them to the bags. You then simply drop the bags at the special desks, so check with airline staff if you are unsure.

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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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Simplicity - You can use it anywhere you have Internet access. Eco-friendly - You don't need to print your boarding pass. Just show it on your smartphone or tablet. More direct - If you don't have any baggage you can go straight to the boarding gate.

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Yes, simply show your mobile boarding pass on a mobile phone, iPad, or Apple Watch and a valid form of identification to the TSA Agent at security to proceed. To board your flight, scan your mobile boarding pass by holding one of the devices listed above with your pass facing the scanner.

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If overhead bins are full, ask the crew for help finding space. The worst that happens is that your luggage is checked for the trip at no charge.

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