Passengers place their luggage on a sanitation belt at Indira Gandhi International (IGI) airport, after the government allowed domestic flight services to resume, during an extended nationwide lockdown to slow the spread of the coronavirus disease (COVID-19) in New Delhi, India, May 28, 2020. REUTERS/Altaf Hussain

An airline worker is seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the departures area of Arturo Merino Benitez International Airport, in Santiago, Chile May 27, 2020. REUTERS/Ivan Alvarado

A man talks to an airline worker during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the international departures area of Arturo Merino Benitez International Airport, in Santiago, Chile May 27, 2020. REUTERS/Ivan Alvarado

A SkyUp Boeing 737-800 aircraft (L) and a Ukraine International Airlines Boeing 737-900 plane are seen at the Boryspil International Airport amid the coronavirus disease (COVID-19) outbreak, outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

People light oil lamps and candles for the victims of the Pakistan International Airlines's PK8303 plane crash, in Karachi, Pakistan May 27, 2020. REUTERS/Akhtar Soomro

People light oil lamps and candles for the victims of the Pakistan International Airlines's PK8303 plane crash, in Karachi, Pakistan May 27, 2020. REUTERS/Akhtar Soomro

A person walks outside a Boeing 737-800 plane of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Top officials and a pilot of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, stand next to an aircraft at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

An aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, is seen at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

A pilot's hat and a protective face mask are seen inside a Boeing 737-800 plane of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Yevhen Khainatsky, Director General of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, poses for a picture inside a Boeing 737-800 plane at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

An aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, is seen at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

An aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, is seen at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Oleh Popovych, a pilot of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, is seen in the cockpit of the Boeing 737-800 plane at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Oleh Popovych, a pilot of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, walks inside a Boeing 737-800 plane at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, are seen at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

An interior view shows a Boeing 737-800 aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

An aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, is seen at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Aircraft of Ukrainian low-cost airline SkyUp which converted most of its passenger planes to carry cargo amid the coronavirus disease (COVID-19) outbreak, are seen at the Boryspil International Airport outside Kiev, Ukraine May 26, 2020. Picture taken May 26, 2020. REUTERS/Gleb Garanich

Housekeeping staff members prepare beds in a temporary quarantine facility for the incoming passengers inside a closed terminal building, at the Netaji Subhas Chandra Bose International Airport (CCU), after the government allowed domestic flight services to resume, during an extended nationwide lockdown to slow the spread of the coronavirus disease (COVID-19), in Kolkata, India, May 27, 2020. REUTERS/Rupak De Chowdhuri

Housekeeping staff members prepare beds in a temporary quarantine facility for the incoming passengers inside a closed terminal building, at the Netaji Subhas Chandra Bose International Airport (CCU), after the government allowed domestic flight services to resume, during an extended nationwide lockdown to slow the spread of the coronavirus disease (COVID-19), in Kolkata, India, May 27, 2020. REUTERS/Rupak De Chowdhuri

Air Asia staff members stand on social distancing markings, as they wait to enter Netaji Subhas Chandra Bose International Airport (CCU), after the government allowed domestic flight services to resume, during an extended nationwide lockdown to slow the spread of the coronavirus disease (COVID-19), in Kolkata, India, May 27, 2020. REUTERS/Rupak De Chowdhuri

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

A passenger plane arrives during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

A passenger plane is cleaned during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

A passenger plane parked on a runway is seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

Passenger planes parked on a runway are seen during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

A passenger plane arrives during a general quarantine amid the spread of the coronavirus disease (COVID-19), at the Arturo Merino Benitez International Airport, in Santiago, Chile May 26, 2020. REUTERS/Ivan Alvarado

A Latam Airlines airplane is seen at Guarulhos International Airport amid the outbreak of the coronavirus disease (COVID-19), in Guarulhos, near Sao Paulo, Brazil, May 19, 2020. Picture taken May 19, 2020. REUTERS/Amanda Perobelli

A general view shows airplanes on the tarmac at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

Made in China protective face masks are unloaded from an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

Made in China protective face masks are unloaded from an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

Workers check the landing gear of an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A message reads "We wish success to France in its fight against the coronavirus" on made in China protective face masks unloaded from an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A worker is seen under an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A worker checks the engine of an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

Workers unload 21-million protective face masks from an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A staff member of Japan Airlines wearing a protective face mask and gloves cleans the cabin of a plane after performing a domestic flight as passengers disembarked at Haneda airport on the first day after the Japanese government lifted the state of emergency, in Tokyo, Japan May 26, 2020. REUTERS/Kim Kyung-Hoon

French gendarmes stand guards as workers unload 21-million protective face masks from an AirBridgeCargo Airlines boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A staff member of Japan Airlines wearing a protective face mask and gloves cleans the cabin of a plane after performing a domestic flight as passengers disembarked at Haneda airport on the first day after the Japanese government lifted the state of emergency, in Tokyo, Japan May 26, 2020. REUTERS/Kim Kyung-Hoon

Japan Airlines' staff members wearing protective face masks and gloves clean the cabin of a plane after performing a domestic flight as passengers disembarked at Haneda airport on the first day after the Japanese government lifted the state of emergency, in Tokyo, Japan May 26, 2020. REUTERS/Kim Kyung-Hoon

A French gendarme looks on as workers unload 21-million face masks from an AirBridgeCargo Airlines boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

An AirBridgeCargo Airlines Boeing 747-87U arrives at Paris Charles de Gaulle airport in Roissy-en-France carrying 21-million protective face masks during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

Workers unload 21-million face masks from an AirBridgeCargo Airlines Boeing 747-87U at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

An AirBridgeCargo Airlines Boeing 747-87U arrives at Paris Charles de Gaulle airport in Roissy-en-France carrying 21-million face masks during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

The jacket of a firefighter hangs in the cloakroom of a barrack at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

The retired Air France Concorde number 5 is seen at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A Qatar Airways Airbus A350 passes by the retired Air France Concorde number 5 on the tarmac at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A Qatar Airways Airbus A350 lands at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A Qatar Airways Airbus A350 lands at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

An Air France Boeing 777 prepares to take off from Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

An Air France Boeing 777 takes off from Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau

A runway under construction is seen at Paris Charles de Gaulle airport in Roissy-en-France during the outbreak of the coronavirus disease (COVID-19) in France May 25, 2020. Picture taken May 25, 2020. REUTERS/Charles Platiau