According to reports, two passengers refused to wear face masks during the flight and the plane returned to Detroit Metro Airport.
A Delta spokesperson told media outlet that the flight was delayed because the passengers “were non-compliant with crew instructions.” The flight did take off again and land in Atlanta after being delayed by the return to Detroit.
It is just the latest in a series of issues involving refusal to wear face masks during flight.
Delta in particular has strongly enforced its policy.
This week, the airline announced it will now require a virtual medical evaluation from passengers if they have a health condition that prevents them from wearing a face mask.
And if it isn’t possible, the carrier is asking passengers to reconsider traveling at all.
“We encourage customers who are prevented from wearing a mask due to a health condition to reconsider travel,” Delta said in a statement. “If they decide to travel, they will be welcome to fly upon completing a virtual consultation prior to departure at the airport to ensure everyone’s safety, because nothing is more important.”