According to the Civil Aviation Authority, Britain’s low-cost airlines Aer Lingus, easyJet, and Ryanair had the least complaints issued to UK regulators in 2013. The complaints were tallied for every million fliers; easyJet received 33 complaints per million fliers, Aer Lingus had 29 complaints per million fliers, and Ryanair had 35 complaints per million fliers. On the other hand, Thomas Cook got 616 complaints per million customers while Thomson got 256 complaints per million fliers. The CAA heard 229,778 complaints in total about UK flights last year. On the plus side, the five largest airports in London had an increase of on-time flights, rising from 76 percent to 84 percent from 2012 to 2013.
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