The most common size for carry on luggage in the United States is 22 x 14 x 9? or 45 linear inches (length + width + height). The 22? height limit includes the wheels and handles for suitcases. Most airlines' size limits are similar to these dimensions.
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On domestic flights within the United States, a carry-on bag that's smaller than 22 x 14 x 9 inches (45 linear inches), including handles and wheels will meet the size restrictions of all major airlines, such as United Airlines and Alaska Airlines.
What must be considered? Each piece of carry-on baggage can measure up to 46 linear inches (118 cm): 22'' high + 14'' long + 10'' wide (56 cm high + 36 cm long + 26 cm wide). This includes handles and wheels.
The linear dimensions, or total linear length, of your luggage are the sum total of the length, width, and height of your suitcase. This number may not exceed the Maximum Linear Dimensions allowed by your airline, typically 62 inches (158cm) for most airlines.
The maximum dimensions of airline check-in luggage are usually stated in terms of linear inches: the sum of the item's length, width and height; most airlines seem to allow up to 62 inches total.
Each piece of carry-on baggage can measure up to 46 linear inches (118 cm): 22'' high + 14'' long + 10'' wide (56 cm high + 36 cm long + 26 cm wide). This includes handles and wheels.
Most airlines follow very similar size regulations when it comes to carry-on luggage. The majority go by a standard height, width and depth measurement. 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.
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.
Linear inches – or really, any linear dimension – simply refer to the sum total of your bag's length, width and depth. So, if your bag measures 28 inches high, 13 inches wide and 10 inches deep, its linear measurement or linear dimensions would be 28 + 13 + 10 = 51 linear inches.
All carry-on items must meet Federal Aviation Administration (FAA) regulations and may not exceed 22 x 14 x 9. The FAA mandates that all carry-on items fit under a seat or in an enclosed storage compartment.
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.
For dimensions, while they don't routinely measure the dimensions of checked bags there is a size limit. If it's a little bit over you may get lucky and the airline won't notice but you're taking a chance with it.
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.
To check your bag, measure in linear inches or centimeters (length + width + height). Up to 10 bags may be checked per passenger on flights operated by Delta or Delta Shuttle. Up to 4 bags may be checked bags on Delta Connection® carrier flights.
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.