Wizz Air Overtakes Ryanair As UK’s Most Complained-About Airline

European low-cost carrier Wizz Air has officially become the United Kingdom’s most complained-about airline on a per-passenger basis, slowly edging past Ryanair in the Civil Aviation Authority’s latest dispute-resolution complaint statistics. Using complaints escalated to the CAA’s approved Alternative Dispute Resolution bodies and its Passenger Advice and Complaints Team, the regulator’s data set for this year, which has been analyzed by Simple Flying, puts Wizz Air in the lead, and it is not even close.