What is a Carry On Bag Size? (Size Restrictions By Airline)

If you are packing bags for a business or family trip, always remember one factor: the size of your carry-on luggage. After all, there are strict rules on carry-on luggage allowances, so it’s always good to do some research before splashing out on that extra cabin bag. If you don’t want to pay extra or don’t want to lose your luggage altogether, make sure to check ahead what is a carry on bag size.

Never bring more luggage than is required for your trip. it is very hard to decide what you can bring with you and what you can for your journey and this is the decision that can change the course of your journey.

As carry-on bags have a weight limit on some airlines, you must consider the weight of the carry-on bag size before starting your journey. It is essential to ask what a carry-on bag size and airline allow.

Along with the size, the design of the carry-on bag also matters; that is why you should be specific while choosing the luggage bags for carry-on. Make sure you get the best carry-on loads as it is your first impression as a flyer.

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Any item you bring on a plane, as a carry-on bag or personal thing, is technically referred to as “carry-on luggage.” However, many airlines have restrictions on what items you can and cannot bring through security checkpoints and onto the planes.

In the US, TSA has implemented new guidelines which allow most passengers to take “liquids, gels & aerosols” in amounts up to 3.4oz (100ml) in their carry-on luggage. As well as with the liquids, they now also allow small pocket knives, small tweezers/sets of nail scissors less than 4 inches/10cm long, and other previously prohibited items such as safety matches or a separate smaller lighter both for lighting cigarettes after flights.

But for those flying out of Europe, there are still strict restrictions on liquids and gels above 100ml but at least being allowed to bring these items in your hand luggage means you don’t need to buy them once onboard the plane.


Though you might find a minor difference with different airlines, the standard domestic carry-on bag size is 22″ x 14″ x 9″, which comprises the handle and the wheels. This size limit ensures your bag will be able to be stored safely in the overhead bin for your flight.

The most significant benefit of traveling with carry-on luggage is to transport your belongings yourself without entrusting them to the airline and hoping they will arrive at your destination on time and in one piece.

You may be able to bring a second piece of hand luggage on your flight. This is known as your “personal item.” This could include a laptop bag or a handbag. Still, some airlines don’t set any restrictions on carry-on bags or even allow a complete free-for-all in terms of what they will qualify as your personal item, so don’t hesitate to contact your local airline beforehand for a luggage size chart and more details.


When flying, there are several rules that you must follow, including, most notably, the 3-1-1 rule for liquids. Regardless of your destination, you cannot bring liquid containers (drinks, paste, or lotion) larger than three ounces through security.

You may also be subject to additional screening, which could cause you to toss these items in the trash during your experience.

It is not allowed to take dangerous goods onboard international flights. A regulatory body known as TSA (Transportation Security Administration) has a list of these objects, including explosives, flammable substances, substances with toxic properties, items with sharp edges and points that surpass specific length values, etc.

In addition to this restriction, lithium batteries are prohibited in carry-on baggage, no matter if it is located in a checked or carry-on bag. It is impossible to take any quantity of liquids, gels, or aerosols in containers larger than 100 ml through security checkpoints when heading toward international destinations. You must check baggage rules before boarding the flight.


Different airlines have different rules for the luggage, but the standard for domestic travel is 22″ x 14″ x 9″ which includes the handle and wheels; though you might find an inch or two of difference between airlines, the size almost remains the same. For example, Southwest airline allows bags up to 24″ x 16″ x 10″.

Like domestic, the International carry-on sizes vary, but most follow the exact size requirement as domestic airlines.

To avoid any inconvenience at the airport, it is recommended to check the size requirements before booking your ticket. Let’s have a look at the carry-on luggage size of different airlines.

Now we give some airlines and give that what is carry on bag size for these airlines.

Alaska Airlines

The carry-on luggage size of Alaska Airlines is

  • The Carry-on luggage size: 22” x 14” x 9”
  • Carry-on luggage weight (Max): not specified
  • Personal item: Only one personal item such as a laptop bag, briefcase, or purse is allowed.

Allegiant Air

The Allegiant air luggage chart is below.

  • Size: 22” x 14” x 9”. Fee also applies on it which varies from $10-$75
  • Maximum weight: Not specified
  • Personal item: The personal items having these dimensions are allowed 7” x 15” x 16”

American Airlines

The size limit of a carry-on bag for American airlines is

  • Size: 22” x 14” x 10”
  • Maximum weight: Not specified
  • Personal item: The items having dimensions 18” x 14” x 8”. (the personal item must fit under the seat in front of you).

Delta Airlines

Delta airlines have the below policy for carry-on luggage

  • Size: 22” x 14” x 9”
  • Maximum weight: Not specified
  • Personal items: A diaper bag, camera bag, purse, or briefcase.

Frontier Airlines

Frontier airlines have the following policy for carry-on bag

  • Size: 24” x 16” x 10”
  • Maximum weight: 35 pounds
  • Personal item: 8” x 18” x 14”

Hawaiian Airlines

The luggage limit of Hawaiian airlines is

  • Size: 45 linear inches
  • Maximum weight: 25 pounds
  • Personal item: A laptop bag, purse, or backpack is allowed. The items must fit under the seat.

Southwest Airlines

Southwest airlines allow

  • size: 24” x 16” x 10”
  • Maximum weight: None specified
  • Personal item: The items having a size 18.5” x 8.5” x 13.5” are allowed, and such things must fit under the seat.

United Airlines

United Airlines have the following carry-on bag limit

  • Size: 22” x 14” x 9”
  • Weight: None specified
  • Personal item: The size of the personal items must be 17” x 10” x 9”.


In the article “what is a carry-on bag size” you must understand the right size of a carry-on bag. We also gave some airlines and their luggage policy about the size of carry-on bags.



Most airlines allow you to bring two bags on board, one of which will be considered your personal item. The general rule for luggage is that your personal items are smaller than carry-on bags and fit comfortably underneath the seats in front of you or within proximity to you during travel.


All carry-on bags must be smaller than 22 inches long, 14 inches wide, and 9 inches high, including handles and wheels, while weighing less than 50 lbs. Personal items may not exceed 18 inches long, 14 inches wide, 8 inches tall, and weigh less than 20 lbs.


Typically in the economy, you can bring one carry-on and one personal item. If you get two bags, one must fit under your seat, and the other can go into the overhead bin.
If you are flying in an upgraded class like business or first, you may be allowed an additional carry-on when traveling on certain airlines. And if you intend to travel in a basic economy with certain airlines and on specific routes, you may be restricted to bringing only one personal item. In short, policies can vary from airline to airline, so always double-check what’s allowed for your flight.


Most US domestic airlines don’t have weight limits on carry-on bags. However, low-cost airline customers face limitations on what they can carry onboard. Weight limits range from 15 lbs to 17 lbs. It is essential for passengers who will be taking a flight with a low-cost domestic or international airline to make sure their carry-on bags fit within the restrictions of the individual carrier.


The carry-on bag policies vary from airline to airline and it depends on which airline you are flying. For example, American Airlines domestic economy class tickets do not include a carry-on bag as part of their Basic Economy fare although it is free for those who buy Coach or full-Fare Economy tickets.
Policies are also different depending on the length of your flight. JetBlue charges $25 for a carry-on if you are traveling to the Caribbean and Central America, but no fee if you are traveling to South America, Europe, or Florida.

I am Lily-Rose, an outdoor gear staff expertise with tons of practical knowledge. My favorite hobby is moving around the world and being adventurous in all the parts of the earth. I have been a worldwide traveler for over 5 years now with no sign of slowing down. I’m happily espoused and residing with my kids.

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