77455013 arrive on time clock punctual schedule 3d illustration
We spend a lot of time analyzing data, looking for nuggets that might explain what is going on in the commercial aviation silo. One of the most valuable datasets we look at is the US On-Time data.
Below is a two-pager model. Typically, we keep these behind the paywall, but we want to show you something neat.
You see the selections on page one, and after selecting a route, watch the chart update. This provides an insight into airline operational performance in the top 20 domestic markets.
Page two is the neat part. This is a new, highly dynamic tool. The focus is on flights that arrive 180 or minutes late. Fortunately, this is a low percentage overall. But click on a year, and the X-axis splits into months. Click a month, and it splits into days. Now, take a look at granular numbers of very late arrivals.
For example, Delta (despite its lovely reputation) performs rather poorly. Every delay adds up fast at an estimated cost of $97/block minute. In 2024 through October, Delta averaged 17% of its arrivals at 15 minutes or more late. That’s the DoT’s definition of late. Based on Delta’s operation costs/minute, we estimate those 15-minute late flights cost Delta over $110m. If one dismisses the 15-minute excuse and works off the actual schedule, it’s much more.
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