Protis told CNN in an email that Flight 1227 on July 23 was on its way from Detroit to Atlanta when they were forced to turn around.
Delta released the following statement to CNN:
Flight 1227 from Detroit to Atlanta returned to the gate following two customers who were non-compliant with crew instructions. After a short delay, the aircraft departed to Atlanta."
The two passengers were removed from the plane, Protis said.
According to Delta's website, "Delta customers and employees are required to wear a face mask, or appropriate cloth face covering over their nose and mouth throughout their travel, aligning with best practice guidelines from the CDC."