Wizz Air has been identified as the airline with the highest rate of complaints in the UK, according to data from the Civil Aviation Authority (CAA). The Hungarian low-cost carrier received 918 complaints per million passengers between mid-2024 and March 2025, surpassing rivals such as Ryanair and easyJet.
The CAA recorded over 43,000 complaints against airlines operating in the UK during that period. Common grievances included flight disruptions, denied boarding, lost luggage, and inadequate support for disabled passengers. Wizz Air logged 10,548 complaints in total, but only 47% were upheld, resulting in payouts of £1.48 million, averaging £651 per customer.
In contrast, British Airways had a much lower complaint rate of 192 per million passengers, but upheld 83% of complaints, paying out £6.24 million at an average of £837 per customer. Ryanair recorded 188 complaints per million passengers, with only 28% upheld and an average payout of £694.
A Wizz Air spokesperson said the airline had made significant investments to improve service, including a £12 billion framework launched in 2025. They noted a 99.8% flight completion rate in 2025 and a 14% improvement in on-time performance compared to 2024. The airline attributed disruptions to factors outside its control and highlighted its 24/7 chatbot and customer service channels.
