From Google:

On-time flight arrival is calculated by subtracting 15 minutes from the scheduled arrival time to determine the cutoff for being considered on-time. For example, if a flight is scheduled to arrive at 2:00 PM, any arrival before or at 1:45 PM is considered on-time, while an arrival at 1:46 PM or later is considered late. The official "arrival time" for this calculation is when the plane's doors are opened at the gate, not when it lands on the runway.

This post has been edited by knwong: Sep 5 2025, 07:21 PM