Does a Backpack Count as a Personal Item Onboard?

Is a backpack considered a personal item when it comes to air travel?
The answer is maybe!
Different airlines have different size restrictions when it comes to personal vs carry-on items, and every backpack is a different size - this makes things confusing.
In this guide to carry-on regulations, we look to America’s leading airlines for clarity.
What is the Difference Between a Personal Item and a Carry-on Bag?

Not all carry-on baggage is the same. Your ticket may include one personal item and one carry-on bag, but what is the difference between the two? Allow us to explain:
A Personal Item is typically a small piece of luggage that passengers can carry onboard in addition to their carry-on bag. The dimensions of your personal item should be considerably smaller than those of your carry-on bag, and it needs to fit comfortably under the seat in front of you.
Examples include:
- Handbag or small purse
- Laptop bag
- Briefcase
- Camera bag
- Diaper bag (if traveling with a baby)
- Small backpack
The easiest way to determine if your bag falls within the ‘personal item’ category is to look at its dimensions.
While these sizes vary by airline, a personal item will typically measure no more than 18 x 14 x 8 inches or 45 x 35 x 29 cm.
If your bag does not fit within these dimensions, the airline will likely consider it your ‘carry-on’ bag and charge you accordingly.

A Carry-on Bag is a larger piece of baggage you can take onboard the aircraft. Most airlines include one carry-on bag in the ticket price but strictly impose their weight and size restrictions, so you must get it right to avoid costly fees at the airport.
Carry-on bags examples include:
- Wheeled cabin bags or rollers
- Duffle bags
- Larger backpacks
- Smaller suitcases
Again, size matters when it comes to carry-on bags. If yours is too big, you might need to pay a fee to take it onboard.
You should check your airline for their specific carry-on dimensions, but as a guideline, carry-on bags typically measure no more than 22 x 14 x 9 inches or 56 x 36 x 23 cm.
Most airlines impose weight restrictions on personal items and carry-on bags, and all have restrictions on liquids, medicines, and sharp objects.
Always check the guidelines before you head to the airport, and if in doubt, pack it in your hold baggage.
Here are the websites of popular airlines to check the up to date information:
Which Airlines Charge for Carry-on Bags?
If you book a basic economy fare with any of the following airlines, chances are, you will only have a personal item included in your ticket price:
- Allegiant Air
- JetBlue
- Frontier Airlines
- Spirit Airlines
- Sun Country Airlines
- United Airlines
If you want to take a personal item AND a carry-on bag onboard these flights, you need to book a ticket that includes both or pay an additional fee for your second bag.
However, you should read the terms of your ticket.
Some airlines, such as JetBlue and United Airlines, allow you to take a personal item and a carry-on bag free of charge on international flights, while others give their frequent flyers additional carry-on allowances.
Personal Item Size Limits for Popular US Airlines
If you want to take your backpack as your personal item (rather than your carry-on bag), it should fall within the following dimensions:
- Alaska Airlines Personal Item Dimensions: 22 x 14 x 9 inches (56 x 35.5 x 22 cm)
- Allegiant Air Personal Item Dimensions: 7 x 15 x 16 inches (17.8 x 38.1 x 40.6 cm)
- American Airlines Personal Item Dimensions: 18 x 14 x 8 inches (45 x 35 x 20 cm)
- Delta Airlines Personal Item Dimensions "purse, briefcase, laptop bag, small backpack, camera bag, or diaper bag that can fit under the seat infront of you"
- Frontier Airlines Personal Item Dimensions: 18 x 14 x 8 inches (46 x 35.5 x 20 cm)
- Hawaiian Airlines Personal Item Dimensions: 22 x 14 x 9 inches (56 x 35.5 x 22 cm)
- JetBlue Airways Personal Item Dimensions: "fit under the seat infront of you"
- Southwest Airlines Personal Item Dimensions: 16.25 x 13.5 x 8 inches (41 x 34.29 x 20cm)
- Spirit Airlines Personal Item Dimensions: 18 x 14 x 8 inches (45 x 35 x 20 cm)
- United Airlines Personal Item Dimensions: 9 in x 10 in x 17 in (22 cm x 25 cm x 43 cm)
Please note these dimensions are subject to change at any time, so always check the airline’s website before heading to the airport.
Top Personal Item Backpacks
Browse our favorite personal item backpacks below:







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