Not all flights appeared to have immediately done away with the mask requirement. At least one person wrote on Twitter that a flight attendant told him masks had to stay on.
For her part, Ms. Tansley felt a jolt of fear and alarm. She was with her two children, a 4-year-old and an 8-month-old, both too young to be vaccinated, the baby too young for a mask. She was on her way to a work meeting involving a colleague with a rare autoimmune disease, and her family had undergone P.C.R. tests because they were worried about potentially infecting him.
“I was scared — all I could do was hope it’s going to be OK,” she said. “There wasn’t any other option.”
Ms. Tansley said her family hadn’t been on a flight since Christmas 2019 out of concern about the virus. She has asthma, and said she wasn’t sure whether she would go ahead with her work meetings, or what her family would do about their return flight home on April 25.
“It’s not that the mask mandate has changed that upset me, it’s that we boarded the plane under one set of rules, and made a decision as a family and as a work group,” said Ms. Tansley, a television producer and former Broadway performer. “The decision was made for us midflight.”