Can I bring a large backpack and a carry-on?

While this can be confusing, most popular airlines allow you to bring a carry-on and personal item, such as a backpack or purse. In general, your personal item should be smaller than your carry-on and under the specific airline's carry-on dimensions, allowing it to fit under the seat in front of you.



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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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In most cases, backpacks are considered personal items as long as they fit under the seat in front of you. For example, if you use a backpack as a personal item and put it under the seat in front of you, you can then use a duffel as a carry-on bag as long as it's under the airline's size requirements.

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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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Generally, you're allowed one carry on and one personal item, such as a purse, suit bag, briefcase. As long as your backpacks conform to the airline size specifications for hand luggage, it's not a problem that both your carry-ons are backpacks.

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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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Unless your carry-on is extremely large, the airline employees at the gate most likely won't ask to measure it. If they'd ask each passenger to measure their carry-on, the boarding would take too long. This could cause delayed flights, which airlines don't want.

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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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The answer is yes. You can use a duffel bag as a carry-on item. However, you should ensure that the duffel bag's size and weight meet the airline's specific restrictions on carry-on luggage. You should also consider the bag's shape, as some airlines have limitations that may affect your duffel bag's usability.

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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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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. Dimensions: The common 45L volume is usually measured as 22 x 14 x 9 inches.

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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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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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Toothpaste can be included in your carry-on luggage in a container that is 3.4oz (100ml) or smaller and abides by other 3-1-1 rules. You cannot bring a regular or full size tube of toothpaste in your carry-on. Toothpaste, regardless of container size, can be placed inside checked luggage.

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If an airline permits two personal items instead of a carry-on, the second item must be small enough to fit beneath the seat in front of you. To minimise airport confusion, verify your airline's guidelines before your journey.

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The TSA's liquid limit for carry-ons—known as the 3-1-1 rule—allows travelers to pack liquids, aerosols, gels, creams, and pastes under 3.4 ounces (100 milliliters) in their carry-on bags. Passengers are allowed up to one quart-sized bag per person, or roughly nine 3.4-ounce containers in a single quart-sized bag.

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Liquids, gels and aerosols packed in carry-on must follow the 3-1-1 liquids rule: 3.4 ounces or less per container. 1 quart size, clear, plastic, zip top bag (all liquids must fit in bag) 1 bag per passenger.

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Being able to compress the 70L allows you to use it as carry-on for all major airlines in the US and Canada. It's super easy: fill your 70L about ½ full (we recommend using the RUX Bag to help separate your belongings).

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40L is perfectly within the size limits for carry on as long as it has the correct dimensions. Many bags, even 40L bags, don't however.

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