Carry-On Size Checker

Carry-on size by airline

The table below is rendered from the same maintained airline data used by the calculator, so the article and checker do not have separate copies of the size limits. Airline policies can change. Check your operating carrier before travel, especially on partner or codeshare itineraries.

Airline data last verified September 8, 2026. Recheck your operating carrier before travel because baggage policies can change.

What size is a personal item?

A personal item is usually the smaller cabin bag that goes under the seat, such as a small backpack, tote, laptop bag, or compact duffel. Some airlines publish exact personal-item dimensions. Others describe the bag by where it must fit without giving one numeric preset.

If the checker shows a personal-item limit for your airline, SizeDial can compare your bag with it. If no numeric limit is stored, that does not mean there is no rule. It means you should check the airline’s current under-seat or personal-item policy directly.

Carry-on vs personal item: what’s the difference?

How do I measure carry-on luggage?

Pack the bag the way you plan to travel with it, set it upright, and measure the outside. Do not measure only the hard shell or fabric body if parts stick out beyond it.

• Height: from the floor to the highest fixed point, including the wheels and any fixed handle that extends above the shell.
• Width: side to side at the widest point.
• Depth: front to back at the thickest point, including exterior pockets and packing bulges.

The order printed by an airline may differ, but the checker can rotate the three measurements when it compares the physical bag with the three allowed dimensions.

Do carry-on dimensions include wheels and handles?

For a practical fit check, yes. Wheels, fixed handles, feet, hard corners, and protruding pockets are part of the bag’s outside footprint. If those parts make the bag taller, wider, or deeper, they can be the reason it does not fit the published size limit.

Retractable handles normally collapse into the travel position, so measure them as the bag will actually go into the sizer or overhead bin. Fixed top and side handles that still protrude should be included.

Is 22 × 14 × 9 a carry-on size?

It is a very common U.S. carry-on limit. In the current SizeDial maintained data, American Airlines, Delta Air Lines, JetBlue, and Alaska Airlines use a 22 × 14 × 9 inch carry-on preset. Southwest currently uses a larger 24 × 16 × 10 inch preset.

That does not make 22 × 14 × 9 a universal standard. Check the airline you are actually flying rather than buying from the most familiar number.

Can a 24-inch suitcase be a carry-on?

Maybe, but the product name is not enough. A “24-inch suitcase” may describe the shell, a nominal category, or one outside dimension before wheels. On an airline with a 22-inch height limit, a true packed outside height of 24 inches is over the published limit. On an airline with a 24-inch limit, the other two dimensions still have to fit.

Measure the real packed outside dimensions and use those numbers. That avoids trying to decode what the manufacturer’s marketing label meant.

Why a “21-inch” or “22-inch” luggage label can be misleading

Luggage names are not airline certifications. A bag sold as 21 inches can end up taller once wheels and fixed handles are counted. An expandable 22-inch bag can become too deep when packed. The airline cares about the outside bag that shows up at the airport, not the product category printed on the tag.

What if my bag is close to the carry-on limit?

SizeDial treats a bag within half an inch of a published limit as a close call. That is a reminder to remeasure carefully, especially if the bag is soft-sided, packed tightly, or has protruding wheels and handles. Being under the stored numbers is useful, but it does not guarantee that every airport, aircraft, sizer, or gate decision will treat the bag identically.

What if my soft-sided bag is slightly over the limit?

If the packed outside measurement is over, treat it as over. A soft bag may compress in some situations, but you should not plan a trip around the hope that it will be squeezed into compliance. If you want to rely on compression, check the airline’s current rules and make sure the packed bag can actually fit the physical sizer without forcing it.

Does an expanded carry-on still count?

Expansion zippers can turn a bag that fits while closed into one that exceeds the depth limit. If you plan to travel with the expansion open, measure the bag expanded and packed. That is the version the airline will see.

Can I rotate my bag to make it fit?

SizeDial allows the three bag dimensions to be rotated against the three allowed dimensions because a rectangular bag may fit the same rectangular limit in more than one orientation. That does not make an oversized dimension disappear. Every physical dimension still has to fit somewhere within the airline’s published limit.

Common carry-on sizing mistakes

• Measuring the empty shell instead of the packed outside bag.
• Leaving out wheels, fixed handles, feet, or stuffed exterior pockets.
• Assuming every airline uses 22 × 14 × 9 inches.
• Relying on a “21-inch,” “22-inch,” or “24-inch” product name instead of actual dimensions.
• Measuring with the expansion zipper closed when you plan to travel with it open.
• Checking only the ticketing airline when a different carrier operates the flight.
• Assuming dimensional fit guarantees a free carry-on under every fare.

How SizeDial checks airline bag size

The checker takes the three packed outside dimensions, converts units without rounding away precision, and compares them with the selected airline’s maintained size limit. It allows the bag dimensions to rotate. If all three can fit, the bag passes the dimensional comparison. A close-margin result warns you when one dimension is within half an inch of the limit.

Airline rules are maintained data rather than permanent assumptions. The current rule set records a last-verified date so the baggage limits can be reviewed without rewriting the calculator engine.