There are three popular luggage sizes: 20 inches, 24 inches, and 28 inches suitcases. And if you are thinking of traveling with a 24-inch luggage, the most common challenge you will face is getting the right size.
Here is the short answer. Even though luggage manufacturers or sellers describe a 24-inch suitcase as a carry-on, but you can not take a 24-inch suitcase as carry-on, most major airlines consider a 24-inch suitcase a checked bag. The maximum size you can use as carry-on baggage is 22 inches. Only Southwest, Frontier, and Cayman Airways will accept a 24-inch bag as a carry-on.
Let’s find out more about whether you can use a 24-inch suitcase as a carry-on, which airlines allow a 24-inch carry-on, and what the different dimensions of a carry-on suitcase are.
Let’s dive right in.
TL;DR
- A 24-inch suitcase is generally large to use as carry-on on most airlines
- A 24 inch suitcase will be considered a checked bag.
- The widely accepted carry-on limit is 22 × 14 × 9 inches (55 × 35 × 22 cm) including wheels and handles.
- Only a few airlines (like Southwest, Frontier) may allow a 24-inch bag, and even then it’s not guaranteed.
- To avoid gate-check fees, delays, and hassle, choose a standard 22-inch carry-on and use smart packing plus a personal item to take more items.
Is a 24 Inch Suitcase a Carry-on?
No, most airlines count a 24-inch bag as a checked bag.
A standard carry-on suitcase needs to be 22 inches or less so it can fit in the majority of airplane overhead compartments.
The most popular carry-on size is 22 inch × 14 inch × 9 inch / 55 cm × 35 cm × 22 cm, including wheels and handles.
Other airlines recommend a size that is slightly smaller than that, but generally it is close to these dimensions.
Only Frontier Airlines and Southwest allow a 24-inch carry-on, in addition to the the Non U.S airline Cayman Airways.
If you do get a 24-inch suitcase to use specifically for those airlines, you may end up looking for a 22-inch suitcase to use as a standard carry-on for other airlines.
You can’t take a large carry-on bag on most airlines.
| Airlines | Bag Size |
|---|---|
| United Airlines | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
| Delta Air Lines | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
| American Airlines | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
| Alaska Airlines | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
| Hawaiian Airlines | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
| Spirit Airlines | 22″ x 18″ x 10″ / 56 cm x 46 cm x 25 cm |
| JetBlue Airways | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
| Allegiant Air | 22″ x 14″ x 9″ / 55 cm × 35 cm × 22 cm |
It is not complicated to understand.
I would prefer to get a suitcase that I can take freely with a wide range of airlines instead of limiting myself to just two or three.
Not only that, but even most international airlines like British Airways, Air Canada, and Qantas allow only a standard small carry-on bag.
Use a 22-Inch Suitcase Instead of a 24-Inch Suitcase
For some people, the reason they want to use a 24-inch bag (approximately 61 centimeters) as their main carry-on is probably because of the false advertising on some manufacturers’ and sellers’ websites.
Travelers wan too ate more item items in carry-on, without paying for checks bags.
But do not always rely on the product title sometimes it is just a marketing statement to generate more sales.
It is always better to take more time to read the product description and see what other buyers are saying about it.
The dimensions need to include handles and wheels, because airlines count them as part of the bag.
In the meantime, review airline carry-on luggage size rules before deciding which suitcase to choose.
You can check this airline luggage size chart or this carry-on luggage size checker.
Let’s look at a few 24-inch examples and their real dimensions:
The 24-inch Kenneth Cole Reaction Renegade is 24″ H × 17″ L × 11.5–13.5″ D. So it won’t work as a carry-on bag on most airlines.
The seller describes it as a medium checked bag.
This 24-inch Coolife suitcase is 26.4″ H × 17.3″ L × 9.8″ D.
Even though it is described as a 24-inch bag, the real size is over 26 inches, with an estimated total capacity of 60 liters, which is heavy and large for an overhead compartment.
The seller also describes it as a medium checked bag.
A 22-inch suitcase will usually have a capacity of about 50 liters, which might sound small.
And I agree.
But if you really need 60 liters and don’t want to check a bag, you can still pack plenty of items in a 22-inch bag while staying within airline size and weight limits.
Some airlines, like JetBlue or Southwest, might occasionally let travelers bring a 24 inches suitcase on board, especially for first class passengers, elite frequent flyer members or just during off peak times, but remember, this is just an exception, not the rule.
Sun Country in the other hand is known for stricter enforcement, especially on full flights.
| Situation at the Airport | Gate-Check Risk | What This Means in Real Life |
|---|---|---|
| Boarding early (Priority / A–B groups) | Low | More overhead space, Airline staff are relaxed |
| Empty flight or lightly booked flight | Low | Less enforcement, bins aren’t full |
| Large aircraft (long-haul planes) | Low | Bigger overhead bins than short-haul jets |
| Standard narrow-body aircraft (most U.S. flights) | Medium | Bag may fit, but agents often eyeball size |
| International flights with U.S. connections | Medium | Rules vary by segment and aircraft |
| Carry-on expanded or looks bulky | High | Expansion almost always triggers gate checks |
| Boarding in last groups | High | Overhead bins already full |
| Regional jets / smaller planes | Very High | 24-inch bags rarely fit overhead bins |
| Flying Southwest Airlines or Frontier Airlines | Low / Medium | More flexible policies, but still not guaranteed |
| Flying American Airlines, United Airlines, or Delta Air Lines | High | Strict 22-inch enforcement, especially on full flights |
How To Take More Stuff in Your 22-Inch Suitcase?
Well, packing lightly is always effective.
So “the larger, the better” isn’t always the best solution, and traveling with a heavy and oversized suitcase can cause frustration.
You can take more items with you even if your airline allows only a small carry-on bag.
Most airlines permit each passenger to bring one carry-on bag and one personal item onboard.
A large carry-on bag that exceeds airline size limits will be subject to checked baggage rules and may include additional charges.
If you want to pack more, there are several ways to do so while staying within airline limits.
For example, take advantage of the full allowed dimensions.
If an airline permits 22″ × 14″ × 9″, choose a suitcase that fits exactly within that size.
The same applies to your personal item.
A personal item is any bag that fits under the seat in front of you, usually 17″ × 10″ × 9″ / 43.2 × 25.4 × 22.9 cm, such as a small backpack or daypack that can hold many items.
Most airlines also do not specify a strict weight limit for carry-ons, allowing you to maximize your packing.
Just look at airline crew they always travel with two items: one small carry-on and one personal item.
What Is The Best Carry-on Luggage Size?
There are countless 20-inch and 22-inch suitcases available, with different brands, materials, and styles.
The type of bag you choose depends on your preferences, but the size should ideally be standard so it works with nearly every airline.
I also like having options when it comes to luggage type. I’m a fan of Samsonite hardside bags and American Tourister softside ones.
The Samsonite Freeform Hardside Expandable Carry-On, measuring 21.25″ × 15.25″ × 10.0″, fits most airline size requirements and has a capacity of 34 liters.
If you’re not a heavy packer, it easily holds everything you need while staying within size limits.
The American Tourister 4 Kix Expandable Softside Carry-On is advertised as 20.25″ × 14.0″ × 8.0″, which fits most airline overhead bins.
With a total capacity of around 30 liters and a spacious interior, it works well for both short trips and longer vacations.
Final Thoughts
I know that a 24 inch suitcase is big enough to take all your essentials items and save time at baggage claim.
But I wouldn’t recommend buying a new 24-inch suitcase to rely on as your main carry-on.
When traveling within the U.S. or flying with U.S. airlines, the confirmed standard carry-on size is 22″ × 14″ × 9” including handles and wheels, and a 24-inch bag is simply too large.
As mentioned earlier, only three airlines allow a 24-inch carry-on.
If you choose to take the risk, be aware that some airlines strictly enforce their rules, and your suitcase may end up in the cargo hold.
I hope this helps.
Happy travels.
Frequently Asked Questions About 24-inch Suitcase As Carry-on
- Can a 24-inch suitcase fit in airplane overhead bins?
Some 24-inch suitcases may physically fit in certain overhead bins, but most airlines use luggage sizers at the airport to filter large bags. If your bag exceeds their official limits, it will be required to be checked even if it fits in the bin. - Do wheels and handles count toward carry-on size limits?
Yes. Airlines always include wheels, handles, and exterior pockets when measuring carry-on luggage. This is why many 24-inch bags exceed size limits once fully measured. - What happens if my 24-inch suitcase is too large at the gate?
If your bag fails the size check, you’ll be required to gate-check it. This may result in extra fees, delays, and the risk of rough handling or loss. - Is a 24-inch suitcase considered a medium or large bag?
A 24-inch suitcase is generally classified as a medium checked bag, not a carry-on. It offers more space than standard carry-on luggage but is smaller than large 28-inch suitcases. - Can I bring a 24-inch suitcase on international flights?
Most airlines have the asme size for both domestic and international flights, so airlines do not allow 24-inch bags as carry-on luggage. Their standard size limits are typically 21–22 inches, making a 24-inch suitcase too large. - Are softside 24-inch suitcases more flexible than hardside ones?
Yes. Softside bags can compress slightly, so you can squeeze it in the size at the airpot, but this rarely makes enough difference to meet airline carry-on limits. - Is it worth risking bringing a 24-inch bag as a carry-on?
Generally, no. You risk gate-check fees, delays, and inconvenience. A compliant 22-inch carry-on is safer and more reliable. - How to save more space in a 22-inch suitcase?
Use packing cubes, roll clothing tightly, wear any bulky items if you can, and use a personal item for heavier or essential belongings. - What is the biggest carry-on size allowed worldwide?
The most widely accepted carry-on size is 22 x 14 x 9 inches (55 x 35 x 22 cm) including wheels and handles.
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