This is information:

A data aggregator affiliated with the country’s leading airlines, such as Delta, American Airlines, and United, gathered domestic flight records of U.S. travelers, sold access to these records to Customs and Border Protection (CBP), and subsequently instructed CBP as part of the agreement to keep the source of the data confidential, according to internal CBP documents acquired by 404 Media. The information encompasses passenger identities, their complete travel itineraries, and financial information.

Another piece.