The standard carry-on size for most US airlines is 22 x 14 x 9 inches, including handles and wheels.
One wrong measurement can mean a gate-check fee and a wait at the carousel. The practical answer for what size are carry-on bags for airlines comes down to a single number: most major carriers use the 22 x 14 x 9-inch standard, and those dimensions include the wheels and handle. But the airline—not TSA—sets the rule, and a few carriers allow more room.
Which Airlines Enforce the 22 x 14 x 9 Standard?
American Airlines and Delta Air Lines both cap carry-on bags at 22 x 14 x 9 inches, with Delta noting the combined total must stay within 45 linear inches.
In practice, this means a bag that fits in the overhead bin on American will almost always fit on Delta, and vice versa. The consistency is the point: luggage makers build most carry-on bags to this exact spec because it clears the widest range of carriers.
Do Handles and Wheels Count Toward the Size?
Yes, on the major airlines they do. American Airlines states its 22 x 14 x 9-inch limit includes handles and wheels, and Delta applies the same approach to its dimension cap. The common mistake is measuring only the main body of the bag; if the wheels push the total past 9 inches in depth, the bag can fail the airline’s sizer even though the printed spec looks fine.
Because of this, your bag must fit the airline’s physical sizer at the gate, not just the luggage tag you bought it with. A soft-sided bag that squishes into the sizer passes; a hard-sided shell with the same label often does not.
Beyond the Standard: Weight Limits and Personal Items
Size is only half the equation. Some carriers also enforce weight limits on carry-ons, and most US airlines allow one personal item with stricter dimensions, such as 18 x 14 x 8 inches, that must fit under the seat in front of you.
Every airline posts its current limits on its baggage page before you fly, so verifying with the operating carrier before packing is the only way to be sure. For travel-ready options that clear the standard across most airlines, our tested picks for the best carry-on bags give you a solid starting point.
What About Liquids and TSA Rules?
Carry-on size limits are a separate matter from TSA’s liquid restrictions. The Transportation Security Administration does not set a universal bag size; it screens what is inside the bag, so liquids in carry-ons must still follow TSA’s 3-1-1 rule of 3.4-ounce containers in one clear quart-sized bag. A bag that meets the airline’s dimensions can still be stopped at security if it holds a water bottle over the limit.
| Airline / Agency | Carry-On Maximum | Notes |
|---|---|---|
| FAA (guidance) | 45 linear inches | Most airlines; larger bags go in checked luggage |
| American Airlines | 22 x 14 x 9 in | Includes handles and wheels |
| Delta Air Lines | 22 x 14 x 9 in | Same per-dimension cap; 45 linear inches total |
FAQs
Can a larger carry-on ever get on board?
Some US airlines allow bags larger than 22 x 14 x 9 inches, and regional jets often use smaller bins that reject even the standard size. The operating airline sets the final call, so check its current baggage page before you fly; gate agents measure with their own sizer, not your luggage tag.
Does the bag size include the wheels?
On American and Delta, yes—the 22 x 14 x 9-inch limit includes wheels and handles. Measure the full depth from the floor to the top of the handle to know whether your bag passes. Soft-sided bags can squeeze into a sizer when full hard-sided shells cannot.
What is a personal item size limit?
Most US airlines allow one personal item around 18 x 14 x 8 inches, placed under the seat in front of you. A purse, backpack, or laptop bag fits this rule. A carry-on that meets the overhead limit is still separate from the personal item allowance.
References & Sources
- American Airlines. “Carry-On Baggage.” States the 22 x 14 x 9-inch limit including handles and wheels.
- Delta Air Lines. “Carry-On Baggage.” Details the 22 x 14 x 9-inch cap and 45-linear-inch total.
- Federal Aviation Administration. “Baggage.” Notes the 45-linear-inch standard for most airlines and the recommendation to check larger bags.