How big can duffle bag be for personal item?

In the majority of cases, a duffel bag won't be considered a personal item, as they usually exceed the typical maximum size of 18 x 14 x 8 inches or 45 x 35 x 29 cm. However, they will often be classed as a carry-on bag, if they are within the average limit of 22 x 14 x 9 inches or 56 x 36 x 23 cm.



For a duffel bag to qualify as a free "personal item" on most airlines in 2026, it must generally not exceed 18 x 14 x 8 inches (45 x 35 x 20 cm). This size ensures the bag can fit entirely underneath the seat in front of you. While most standard gym-sized duffels are actually too large (exceeding the 18-inch length), many small, soft-sided "overnight" duffels are perfect because they can be squashed into an airline's bag sizer. Carriers like Spirit and Frontier are particularly strict about these dimensions. On the other hand, full-service airlines like United or American may allow slightly more flexibility if the bag isn't overstuffed. The "pro-tip" for 2026 travelers is to use a duffel with compression straps; if you can reduce the bulk to fit the 18-inch limit, you can avoid the $50+ "gate-check" fee that many low-cost carriers now charge for oversized personal items.

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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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Checked Luggage The most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14. Airline carriers will allow overweight, oversize or additional baggage for additional fees.

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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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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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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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Airlines may sometimes ask you to buy a new seat in order to fit your big item. Then, the additional fee will be significant. Even worse, if your personal item is too large or heavy, it is possible that you have to leave it or be denied entry.

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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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Domestic carry-on policies. A good rule of thumb is that if your carry-on bag fits under the seat in front of you, it's considered a personal item. This includes small backpacks, purses, briefcases, laptop bags, etc. Larger bags, including suitcases, must fit in the overhead bin compartment.

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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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Personal Items: Personal items can be no larger than 14” tall, 18” wide, and 8” long. Personal items must fit completely within the personal item portion of the bag sizer. Think purses, totes, computer bags, briefcases, and kids backpacks!

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In general, travelers are permitted to bring into the plane one personal item and one carry-on bag with them on most flights. The personal item is often a small bag, such as a handbag or laptop bag, that is able to be stowed away beneath the seat that is directly in front of you.

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In most cases, an airline will allow you to bring one carry-on baggage and one personal item. A personal item is normally something like a purse, laptop, backpack or camera case. Personal items should always be small enough to fit underneath the seat in front of you.

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Each passenger is limited to one quart-size bag of liquids, gels and aerosols. Common travel items that must comply with the 3-1-1 liquids rule include toothpaste, shampoo, conditioner, mouthwash and lotion.

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You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item.

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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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A personal item is any bag that fits under the airplane seat in front of you, though the precise dimensions of these bags vary by carrier. You can use pretty much any bag ranging from duffels and weekenders to backpacks and sling bags, but for the most part, they should be under 18 x 14 x 8 inches.

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Airlines calculate carry-on luggage size measurements using two methods: Height by width by depth: Most – but not all – airlines measure bags by inches or centimeters using this formula: height by width by depth, such as 22 x 14 x 9 inches.

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Weighing. If you have both checked and carry on luggage, usually both are going to be weighed at the check-in/luggage drop. If you only have a carry on and check-in online you have small chances to have your luggage weighed, however it might not be true if you apparently struggle with it.

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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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