what is check in baggage

Checked baggage refers to luggage that is handed over to an airline check-in agent at the airport and placed in the airplane's cargo hold. It is inaccessible to the passenger during the flight and must be retrieved at baggage claim upon arrival. Checked baggage is limited by airlines with regard to size, weight, and number, usually dependent upon the fare paid or class of ticket. Baggage exceeding the limits is regarded as excess baggage and may require an additional fee.