Two passengers with full protective suits are seen at the Indira Gandhi International Airport in New Delhi, India, May 25, 2020. (Photo by Partha Sarkar/Xinhua)

An airport employee (R) wearing a face shield checks a passenger's body temperature at the Indira Gandhi International Airport in New Delhi, India, May 25, 2020. (Photo by Partha Sarkar/Xinhua)

A security guard (R) is on duty at the Indira Gandhi International Airport in New Delhi, India, May 25, 2020. (Photo by Partha Sarkar/Xinhua)

Passengers stand in line and fill in papers at the Indira Gandhi International Airport in New Delhi, India, May 25, 2020. (Photo by Partha Sarkar/Xinhua)

Passengers wearing personal protective equipment (PPE) arrive at Chhatrapati Shivaji Maharaj International Airport in Mumbai, India, May 25, 2020. (Xinhua/Stringer)

Passengers wearing personal protective equipment (PPE) arrive at Chhatrapati Shivaji Maharaj International Airport in Mumbai, India, May 25, 2020. (Xinhua/Stringer)

A passenger wearing personal protective equipment (PPE) arrives at Chhatrapati Shivaji Maharaj International Airport in Mumbai, India, May 25, 2020. (Xinhua/Stringer)