Perhaps the landing slots are more valuable. If airlines don't use allocated slots they could lose them. Might as well get some small amount of income. Upsell on the flight. Just a thought.
Wizzair’s ancillary sales of 1.2 billion Euro accounted for 45% of total revenues(2017).
Ancillary services are considered those beyond the transportation of the passenger from origin to destination. Airlines provide various services and engage in other activities connected with its core air passenger service, including non-flight scheduled services, internet-related services, and the in-flight sale of beverages, food, and merchandise.
Ancillary services are considered those beyond the transportation of the passenger from origin to destination. Airlines provide various services and engage in other activities connected with its core air passenger service, including non-flight scheduled services, internet-related services, and the in-flight sale of beverages, food, and merchandise.