Profile an airport, not a marketing claim

Every reporting U.S. carrier files, flight by flight, when it left and when it landed — and, for the late ones, why. These tools reduce that record to one airport at a time: how reliably flights leave and arrive there, month by month, and the DOT's own split of what caused the delays.

Nothing is smoothed or predicted. A busy hub that pushes planes out on time can still absorb late inbound traffic, so departures and arrivals are scored separately — the two sides of an airport rarely tell the same story.