USA Today reports:
American, United, Delta, Southwest, Alaska, Frontier and JetBlue have all announced passenger mask requirements. Beginning Monday, Delta, United and JetBlue will require all passengers to wear face coverings.
Delta and JetBlue will make them mandatory from the time they check in through the time they deplane. Delta, which says customers can take them off for meals, will also require them in its Sky Club lounges. United said it would provide the required face coverings to passengers starting Monday.
Starting May 11, American, Southwest and Alaska will also begin requiring their passengers to wear face masks. Last week, Sara Nelson, the international president of the Association of Flight Attendants-CWA, asked the federal government to provide passengers with disposable paper or cloths masks.
Earlier this week JetBlue became the first major carrier to require masks. Hit the link for specific details on each airline.