The airline sent two internal memos to staff as a "reminder of Delta's commitment to creating a culture of safety for every employee" in response to recent  incidents involving "unruly passengers."

"At Delta, we now have more than 1,600 people on our 'no fly' list, and we've submitted more than 600 banned names to the FAA in 2021 as part of their Special Emphasis Enforcement Program," Delta said in a statement on Thursday.

"We've also asked other airlines to share their 'no fly' list to further protect airline employees across the industry—something we know is top of mind for employees as well. A list of banned customers doesn't work as well if that customer can fly with another airline."

The memos, sent by Kristen Manion Taylor, S.V.P.—InFlight Service, and Eric Phillips, S.V.P.—ACS and Cargo Operations, came on the same day that the U.S. House of Representatives Committee on Transportation & Infrastructure held a hearing titled, "Disruption in the Skies: The Surge in Air Rage and its Effects on Workers, Airlines, and Airports."