The outage, which lasted for around six hours, displaced thousands of passengers – many of whom were stranded abroad for days – and left them or their agents scrambling to rebook.
The CAA puts costs incurred by passengers, airports, tour operators, insurers and others at £75-£100 million. It estimates costs to airlines at around £65 million.
An independent report into the incident, published on Thursday (14 November), said 300,000 passengers were impacted by flight cancellations.
Another approximately 95,000 were affected by delays of more than three hours and at least a further 300,000 by shorter delays. EasyJet alone cancelled 114,000 passengers.
