The aviation departure reliability data is obtained from the U.S. Bureau of Transportation Statistics to report departure reliability. Departure reliability is based on a flight’s take-off time from the gate. A departure is deemed “on-time”, and therefore reliable, if the flight departs within 15 minutes of the time scheduled within the carrier’s Computerized Reservations Systems. Departure reliability can be influenced by various factors such as weather, mechanical, and other reasons beyond the control of an airport or an airline.

• Aviation Departure Reliability: Departure of a flight within 15 minutes of the scheduled time shown in the carrier’s Computerized Reservations Systems (CRS). In the aviation industry, this is considered an on-time departure. Departure reliability is based on departure from the gate and can be influenced by various factors such as weather, and mechanical reasons beyond the control of the airport or the air carrier. Aviation departure reliability is reported for commercial service airports.
• Commercial Service Airports: Publicly owned airports with more than 10,000 annual enplanements.
• Reporting Periods
  • Yearly: Includes all the calendar days in a year.