Carry-on luggage refers to the small bags or suitcases that travelers can bring with them onto an airplane. These bags are designed to fit in the overhead compartments or under the seat in front of you. Most airlines have specific size limits for carry-on luggage, so it's important to check the rules before packing. Common items packed in carry-on bags include clothing, toiletries, and electronics like laptops or tablets. Using carry-on luggage has several advantages. It allows you to avoid checked baggage fees and saves time at the airport since you won't need to wait at the baggage claim after your flight. Additionally, having your belongings close at hand can provide peace of mind during your travels.