Wizz Air Holdings plc is a Hungarian ultra low-cost carrier group registered in Jersey. The company includes the subsidiaries Wizz Air Hungary, Wizz Air Malta, Wizz Air Abu Dhabi and Wizz Air UK. The airlines serve numerous cities across Europe, as well as some destinations in North Africa, the Middle East, South, and Central Asia. As of 2023, the airline group has its largest bases at Budapest Ferenc Liszt International Airport, Bucharest Henri Coandă International Airport and London Luton Airport and flies to 194 airports. The holding company is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.

A low-cost carrier (LCC) or low-cost airline, also called no-frills, budget or discount carrier or airline, is an airline that is operated with an emphasis on minimizing operating costs. It sacrifices certain traditional airline luxuries, for cheaper fares. To make up for revenue lost in decreased ticket prices, the airline may charge extra fees such as for carry-on baggage. As of April 2020, the world's largest low-cost carrier is Southwest Airlines, which operates primarily in the United States, as well as in some surrounding areas.