The present invention improves the efficiency of the loading cell while maintaining and improving the flexibility of the baggage handling system of an airport such that bags may be received early with minimal labor-intensityby virtue of a novel buffer storage (200) and method of storing baggage (500) in a buffer storage (200). In said method baggage (500) and identification information thereof is received to the buffer storage (200) and in at least one physical property of the baggage (500) is measured. The baggage (500) is categorized based on destination and said measurement of the at least one physical property. The categorized baggage (500) is sorted to a buffer block (A, B, C, D) which is customized for a specific category.