The "25-minute turnaround" is the cornerstone of Ryanair’s ultra-low-cost business model, designed to keep aircraft in the air for as many hours as possible. The process begins the moment the plane touches down: passengers exit via onboard stairs (avoiding expensive airport jet-bridges), while the next group of passengers is often already waiting on the tarmac or in a "pre-boarding" zone. Unlike traditional airlines, Ryanair flight attendants are responsible for a "light clean" of the cabin during this window, checking seat pockets and straightening belts rather than waiting for a professional cleaning crew. Pilots utilize this time to finalize flight plans and perform quick external inspections. By minimizing "ground time," Ryanair can squeeze more flights out of a single airframe per day, which significantly lowers the "fixed cost" per seat. This efficiency is why the airline often uses secondary airports with less congestion, as a delay at a major hub would break the tight schedule that allows them to maintain their record-breaking 25-minute goal.