While Aer Lingus was at the bottom of the table in the long-haul segment, Ryanair was ranked as the worst short-haul carrier, obtaining an overall score of only 55%.

The company led by Michael O’Leary reacted promptly, classifying the results as "false" and "invented," stating that none of its 208 million passengers paid attention to these studies.

The survey revealed that Ryanair only obtained two stars out of five in categories such as booking process, boarding, customer service, and cabin environment, dropping to just one star for seat comfort.

The only area where the carrier scored better was in value for money, where it obtained three stars, still below competitors such as Lufthansa or TUI. In contrast, Jet2 emerged as the big winner in the short-haul segment, standing out for its reliability and low number of last-minute cancellations.

Regarding Aer Lingus, its long-haul division finished with a score of 65%, penalised by the only two stars awarded for seat comfort and cabin environment—factors considered crucial on longer flights.

In short-haul flights, the Irish company positioned itself in the middle of the table with 71%. At the top of the overall passenger satisfaction ranking was Singapore Airlines, chosen by respondents as the best long-haul airline, consolidating its reputation for excellence in service and onboard comfort.