Hear this out loudPauseTypically, 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. Any bag within this dimension can fit most aeroplanes' overhead compartments.

## What size backpack is considered a personal item?

18 x 14 x 8 inchesHear this out loudPauseAs a general rule of thumb, **anything smaller than the dimensions of a carry-on** can be considered a personal item. However, every airline has different restrictions for size. In most cases, your backpack should be no more than 18 x 14 x 8 inches.

## How big of a backpack can I fly with?

## Is a 50l backpack too big for carry-on?

Hear this out loudPause**Your backpack will generally be allowed as a carry-on if it's under 50 liters**, or about 22 x 14 x 9 inches. Get a 45-liter backpack if you want to carry as much stuff as possible on the plane with you.

## How do you measure a backpack for a flight?

Hear this out loudPauseTo calculate the size of your carry-on bag, **measure the length, height, and depth (or width) of your bag**. You can add the three numbers together to find the total linear inches. For example, a bag with a length of 20 inches, width of 12 inches, and depth of 6 inches would be 20+12+6 = 38 linear inches.

## How do I know if my backpack is TSA approved?

**Some of the maximum dimensions for backpacks to qualify as personal items include the following:**

- American Airlines: 18 x 14 x 8 inches.
- Delta: 22 x 14 x 9 inches.
- Frontier: 18 x 14 x 8 inches.
- JetBlue: 17 x 13 x 8 inches.
- Southwest: 18.5 x 13.5 x 8.5 inches.
- Spirit: 18 x 14 x 8 inches.