Air Traffic Activity System (ATADS)

The Air Traffic Activity Data System (ATADS) contains the official NAS air traffic operations data available for public release. On the 20th of each month, data for the previous month is made available. The first year of data available is FY 1990.

The process for capturing center counts was updated in October 2018. Data prior to October 2018 uses the original historical counts process that allocates flights differently. Data is not comparable across the differently processed periods of time.