Wizz Air, legally incorporated as Wizz Air Hungary Ltd. (Hungarian: Wizz Air Hungary Légiközlekedési Zrt.) is a Hungarian ultra-low-cost carrier with its head office in Budapest, Hungary. The airline serves many cities across Europe, as well as some destinations in North Africa, the Middle East, and South Asia. It has the largest fleet of any Hungarian airline, although it is not a flag carrier, and serves 44 countries. Its Jersey-based parent company, Wizz Air Holdings plc, is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. As of 2020, the airline has its largest bases at Budapest Ferenc Liszt International Airport and London Luton Airport and flies to 164 airports.