Aircrafts of Cathay Pacific and Hong Kong Airlines are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24, 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Pacific and its budget airline HK Express are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24, 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Pacific and its regional brand Cathay Dragon are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Pacific and Hong Kong Airlines are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24, 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Dragon are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Pacific and its regional brand Cathay Dragon are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Pacific are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 24 2020. REUTERS/Tyrone Siu

An aircraft of Cathay Pacific is seen in front of air traffic control tower at the Hong Kong International Airport, Hong Kong, China October 24 2020. REUTERS/Tyrone Siu

Aircrafts of Cathay Pacific and its regional brand Cathay Dragon are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Aircrafts of Cathay Pacific and its regional brand Cathay Dragon are seen on the tarmac at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

A Cathay Pacific aircraft is seen on a runway at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Aircrafts of Hong Kong Airlines, Cathay Pacific and its regional brand Cathay Dragon are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Aircrafts of Cathay Pacific and its regional brand Cathay Dragon are seen at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Aircrafts are parked on the tarmac near the Cathay Pacific Cargo Terminal at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Aircrafts of Cathay Pacific and its regional brand Cathay Dragon are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Cathay Pacific aircrafts are parked on the tarmac at the Hong Kong International Airport, Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Connie Leung, vice president of Hong Kong Dragon Airlines Flight Attendants Association (3rd L) wears a mask while speaking to reporters at the Cathay City, the headquarters of Cathay Pacific, in Hong Kong, China October 21, 2020. REUTERS/Joyce Zhou

A sign of Cathay Pacific is seen at its headquarters Cathay City in Hong Kong, China October 21, 2020. REUTERS/Lam Yik

A sign of Cathay Pacific is seen at its headquarters Cathay City in Hong Kong, China October 21, 2020. REUTERS/Lam Yik

A woman wearing a mask following the coronavirus disease (COVID-19) outbreak, walks out of Cathay City, the headquarters of Cathay Pacific, in Hong Kong, China October 21, 2020. REUTERS/Lam Yik

An aircraft model of Cathay Dragon, a regional brand by Cathay Pacific, is seen at its headquarters Cathay City, in Hong Kong, China October 21, 2020. REUTERS/Lam Yik

A sign of Cathay Pacific is seen at its headquarters Cathay City in Hong Kong, China October 21, 2020. REUTERS/Lam Yik

People wearing face masks following the coronavirus disease (COVID-19) outbreak, walk out of Cathay City, the headquarters of Cathay Pacific, in Hong Kong, China October 21, 2020. REUTERS/Lam Yik

Cathay Pacific logo is seen at its headquarters Cathay City in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

Cathay Pacific employees, wearing masks against COVID-19, are seen behind counters with glass dividers at Hong Kong International Airport, China October 20, 2020. REUTERS/Lam Yik

Cathay Pacific aircraft is seen at Hong Kong International Airport, China October 20, 2020. REUTERS/Lam Yik

Cathay Pacific and Cathay Dragon logos are seen near a counter at Hong Kong International Airport, China October 20, 2020. REUTERS/Lam Yik

A Cathay Pacific employee, wearing a face mask following the coronavirus disease (COVID-19) outbreak, walks past the departures hall at Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A man, wearing a face mask following the coronavirus disease (COVID-19) outbreak, stands near an airplane model at Cathay City, the headquarters of Cathay Pacific, in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A man, wearing a face mask following the coronavirus disease (COVID-19) outbreak, walks out of Cathay City, the headquarters of Cathay Pacific, in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A Cathay Pacific aircraft is seen at Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A Cathay Pacific cargo aircraft flies over Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A Cathay Pacific employee, wearing a face mask following the coronavirus disease (COVID-19) outbreak, stands behind a counter at Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A Cathay Pacific employee, wearing a face mask following the coronavirus disease (COVID-19) outbreak, stands behind a counter at Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

Cathay Pacific employees, wearing face masks following the coronavirus disease (COVID-19) outbreak, are seen behind counters with glass dividers at Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

A Cathay Pacific employee, wearing a face mask following the coronavirus disease (COVID-19) outbreak, walks past a ticketing counter at Hong Kong International Airport in Hong Kong, China October 20, 2020. REUTERS/Lam Yik

Hong Kong Financial Secretary Paul Chan, wearing a face mask following the coronavirus disease (COVID-19) outbreak, attends a news conference on the bailout of Cathay Pacific in Hong Kong, China June 9, 2020. REUTERS/Laurel Chor

Hong Kong Financial Secretary Paul Chan (L), wearing a face mask following the coronavirus disease (COVID-19) outbreak, attends a news conference on the bailout of Cathay Pacific in Hong Kong, China June 9, 2020. REUTERS/Laurel Chor

Hong Kong Financial Secretary Paul Chan, wearing a face mask following the coronavirus disease (COVID-19) outbreak, attends a news conference on the bailout of Cathay Pacific in Hong Kong, China June 9, 2020. REUTERS/Laurel Chor

Cathay Pacific aircraft are seen parked on the tarmac at the airport, following the outbreak of the new coronavirus, in Hong Kong, China March 5, 2020. REUTERS/Tyrone Siu

A Cathay Pacific aircraft takes off at the airport, following the outbreak of the new coronavirus, in Hong Kong, China March 5, 2020. REUTERS/Tyrone Siu

Cathay Pacific aircraft are seen parked on the tarmac at the airport, following the outbreak of the new coronavirus, in Hong Kong, China March 5, 2020. REUTERS/Tyrone Siu

Cathay Pacific aircraft are seen parked on the tarmac at the airport, following the outbreak of the new coronavirus, in Hong Kong, China March 5, 2020. REUTERS/Tyrone Siu

Cathay Pacific aircraft are seen parked on the tarmac at the airport, following the outbreak of the new coronavirus, in Hong Kong, China March 5, 2020. REUTERS/Tyrone Siu

Cathay Pacific aircraft are seen parked on the tarmac at airport, following the outbreak of the new coronavirus, in Hong Kong, China March 5, 2020. REUTERS/Tyrone Siu

Cathay Pacific Airways and Dragon Airways planes are seen at the Hong Kong International Airport, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

Cathay Pacific Airways planes are seen at the Hong Kong International Airport, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

Cathay Pacific Cargo Terminal is seen at Hong Kong International Airport, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

A Cathay Pacific flight takes off from the Hong Kong International Airport, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

A Cathay Pacific flight takes off from the Hong Kong International Airport, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

A Cathay Pacific flight flies over the city of Hong Kong, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

Cathay Pacific Airways planes are seen at the Hong Kong International Airport, China September 6, 2019. Picture taken September 6, 2019. REUTERS/Amr Abdallah Dalsh

Workers service a Cathay Pacific Airbus A330-300 plane at Hong Kong International Airport, China September 3, 2019. Picture taken September 3, 2019. REUTERS/Amr Abdallah Dalsh

Workers service a Cathay Pacific flight at Hong Kong International Airport, China September 3, 2019. Picture taken September 3, 2019. REUTERS/Amr Abdallah Dalsh

Cathay Pacific Group Chief Executive Officer Rupert Hogg attends a news conference on the carrier's annual results in Hong Kong, China March 14, 2018. Picture taken March 14, 2018. REUTERS/Bobby Yip

A Cathay Pacific Boeing 777-300ER plane lands at Hong Kong airport after it reopened following clashes between police and protesters, in Hong Kong, China August 14, 2019. REUTERS/Thomas Peter

Passengers queue at Cathay Pacific's counters a day after the airport was closed due to a protest, at Hong Kong International Airport, China August 13, 2019. REUTERS/Issei Kato

Passengers walk past a Hong Kong Express Airways check-in counter at the Hong Kong Airport, China March 27, 2019. REUTERS/Tyrone Siu

Passengers walk past a Hong Kong Express Airways check-in counter at the Hong Kong Airport, China March 27, 2019. REUTERS/Tyrone Siu

The logo of Hong Kong Express Airways is seen at its check-in counter, at the Hong Kong Airport, China March 27, 2019. REUTERS/Tyrone Siu