Tyler already linked to Max’s excellent post on flight delays but Fortune gives you the backstory:
On one sweltering summer afternoon in June, thunderstorms rolled over Boston Logan International Airport. It was the kind of brief, predictable summer squall that East Coasters have learned to ignore, but within hours, the airport completely shut down. Every departure was grounded, and flyers waited hours before they could get on their scheduled flights.
Among those stranded were Maxwell Tabarrok’s parents, in town to help move him into Harvard Business School, where he is completing an economics PhD. Tabarrok told Fortune he was fascinated by how an entire airport could grind to a halt, not because of some catastrophic event, but due to a predictable hiccup rippling through an overstretched system.
So, he did what any good statistician would: dive into the data. After analyzing over 30 years—and 100 gigabytes—of Bureau of Transportation Statistics data, he found out his parents’ situation wasn’t bad luck: Long delays of three hours or more are now four times more common than they were 30 years ago.
Not only that, but Tabarrok found airlines are trying to hide the delays by “padding” the flight times—adding, on average, 20 extra minutes to schedules so a flight that hasn’t gotten any faster still counts as “on time.” Thus, on paper, the on-time performance metrics have improved since 1987, even as actual travel times have gotten longer.
We had a can’t miss appointment the next morning and ended up renting a car and driving through the night from Boston to the Washington. Glad Max got a great post out of it!
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