'Good news.' Delta Air Lines CEO praises President Biden's federal mask mandate The Citizen 5 years ago Delta began requiring all employees and customers to wear masks on board its planes in May 2020. Source: The Business Journal Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook CEO: Delta customers who refuse to wear face masks may be banned from future flightsDateJune 25, 2020In relation toPolvaderaDelta now requires customers to acknowledge mask agreement at check-inDateJuly 30, 2020In relation toPolvaderaDelta will continue blocking middle seats into spring 2021DateNovember 18, 2020In relation toPolvadera
