{"id":177912,"date":"2025-08-14T13:30:45","date_gmt":"2025-08-14T13:30:45","guid":{"rendered":"https:\/\/aviacionaldia.com\/?p=177912"},"modified":"2025-08-14T22:19:02","modified_gmt":"2025-08-14T22:19:02","slug":"airline-delays-in-u-s-have-quadrupled-in-30-years-harvard-researcher-says","status":"publish","type":"post","link":"https:\/\/aviacionaldia.com\/en\/2025\/08\/airline-delays-in-u-s-have-quadrupled-in-30-years-harvard-researcher-says.html","title":{"rendered":"Airline Delays in U.S. Have Quadrupled in 30 Years, Harvard Researcher Says"},"content":{"rendered":"\n

On a hot June afternoon in Boston, a typical summer storm was enough to bring Logan International Airport to a complete standstill. This was not due to a natural disaster or a catastrophic failure but rather a predictable event that left hundreds of passengers stranded for hours. Among them were the parents of Maxwell Tabarrok, a doctoral student in Economics and a future Harvard Business School student.<\/p>\n\n\n\n

The incident sparked a question in Tabarrok: How is it possible for such a massive infrastructure to halt over such a common inconvenience? To find answers, he analyzed over 30 years\u2014and 100 gigabytes\u2014of data from the Bureau of Transportation Statistics. His conclusion was stark: delays of three hours or more are now four times as frequent as they were three decades ago.<\/p>\n\n\n\n

Padded Schedules: The Invisible Strategy<\/h2>\n\n\n\n

The study revealed that airlines have resorted to “padding” their schedules to mask their performance metrics. On average, they have added an extra 20 minutes to scheduled flight durations, allowing flights to appear “on time” in official records even if the actual travel time hasn\u2019t improved.<\/p>\n\n\n\n

Between 1987 and 2000, actual and scheduled flight times remained nearly identical. However, starting in 2000, they began to diverge significantly\u2014a deliberate move by airlines, according to Tabarrok, to reduce the perceived rate of delays.<\/p>\n\n\n\n

This artificial adjustment comes at a cost: using data on the average U.S. wage, the researcher estimated that the time lost by passengers amounts to roughly $6 billion annually.<\/p>\n\n\n\n

\u2192 Global Passenger Demand Grows in June, but at a Slower Pace, IATA says<\/a><\/strong><\/p>\n\n\n\n

Structural Causes: Beyond Bad Weather<\/h2>\n\n\n\n

While adverse weather tops the list of delays not attributable to airlines, the problem runs deeper. The saturation of the U.S. air traffic system has been exacerbated by:<\/p>\n\n\n\n