Wizz Air, legally incorporated as Wizz Air Hungary Ltd. and stylised as W!ZZ Air, 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 and the Middle East. It has the largest fleet of any Hungarian airline, although it is not a flag carrier, and currently 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 Airport and Luton Airport and flies to 164 airports.