FAA Operations & Performance Data provides access to historical traffic counts, forecasts of aviation activity, and delay statistics. Most of the following databases contain proprietary information and require a registered user name and password. You may request a login from FAA.
Operations Network (OPSNET): Official FAA Operations and Delay Data.
Traffic Flow Management System Counts (TFMSC): Traffic by Airport from TFMS flight messages.
Airline Service Quality Performance (ASQP): Traffic and Delay for Largest U.S. Carriers.
Flight Schedule Data System (FSDS): Flight Schedule Data.
Terminal Area Forecast (TAF): Official FAA Forecast used for Planning and Investment.
Legacy ASPM: The original ASPM interface. Developed with technologies that are no longer supported. Eventually, Legacy ASPM will be decommissioned.