On-time departure 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 reliable if the flight departs within 15 minutes of the scheduled time shown in the carrier’s Computerized Reservations Systems. In the aviation industry, this is commonly known as on-time departure. Departure reliability can be influenced by various factors such as heavy traffic volume, 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 heavy traffic volume, weather, and mechanical reasons beyond the control of the airport or the air carrier. Aviation departure reliability is reported for all commercial service airports.
• Reporting Periods
  • Yearly: Includes all the calendar days in a year.