This report is based on approximately 58 million flight records using full-year data from 2018 to showcase the best performers in an expanded range of categories. The source defines on-time performance (OTP) as a flight that arrives or departs within 14 minutes and 59 seconds (under 15 minutes) of its scheduled arrival or departure time. Cancellations are also included. Airports include arriving and departing OTP, while airline OTP is for arrivals only.