For air travel in 2026, luggage is generally categorized into three main types: checked bags, carry-on bags, and personal items. Checked luggage consists of large suitcases or trunks that are handed over at the check-in counter and stored in the aircraft's cargo hold; these usually have a weight limit of 23kg (50lbs) and a size limit of 62 linear inches. Carry-on luggage, such as small rolling suitcases or large duffel bags, must fit in the overhead bins and typically follows the 22 x 14 x 9 inch standard. Finally, a "personal item" is a smaller bag like a backpack, laptop bag, or purse that must fit entirely under the seat in front of you. Beyond these standard categories, most airlines also allow specialized items such as strollers, car seats, and medical equipment (like CPAP machines) often at no extra charge. If you are a musician or athlete, you can bring musical instruments or sports equipment (like skis or golf clubs), though these are often classified as "oversized" or "specialty" luggage and may require a hard-sided case and additional handling fees. Always verify your specific fare class, as "Basic Economy" tickets on many carriers in 2026 now strictly exclude a free overhead carry-on bag.