The Lufthansa logo is seen at an empty check-in counter at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. Picture taken with a zoom-burst exposure. REUTERS/Kai Pfaffenbach

A disinfectant dispenser stands between empty check-in counters of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A warning sign is seen at empty check-in counters of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A sign reads "No entrance" at empty check-in counters of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A sign reads "No entrance" at empty check-in counters of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

Grounded planes of German air carrier Lufthansa are parked at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

Grounded planes of German air carrier Lufthansa are parked at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A Lufthansa jet is seen behind a barbed-wire fence at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

Grounded planes of German air carrier Lufthansa and Condor are parked at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A Lufthansa plane takes off behind a grounded jet at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A general view shows the near-empty check-in area of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A passengers walks through the empty check-in area of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A passengers rushes through the empty check-in area of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

Baggage tags are seen at the shut-down first-class counters of German air carrier Lufthansa at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

The first class counters of German air carrier Lufthansa are seen shut down at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

The first class counters of German air carrier Lufthansa are seen shut down at the airport as the spread of coronavirus disease (COVID-19) continues in Frankfurt, Germany, June 2, 2020. REUTERS/Kai Pfaffenbach

A passenger rushes past check-in desks prior to the first Lufthansa charter flight for Tianjin, China after the lockdown, as the spread of the coronavirus disease (COVID-19) continues, at the airport in Frankfurt, Germany, May 29, 2020. REUTERS/Kai Pfaffenbach

Passengers rush past check-in desks prior to the first Lufthansa charter flight for Tianjin, China after the lockdown, as the spread of the coronavirus disease (COVID-19) continues, at the airport in Frankfurt, Germany, May 29, 2020. REUTERS/Kai Pfaffenbach

Karin Wasowski (R), controller at German car manufacturer Volkswagen AG is hugged by a friend before she boards the first Lufthansa charter flight for Tianjin, China, after the lockdown, as the spread of the coronavirus disease (COVID-19) continues, at the airport in Frankfurt, Germany, May 29, 2020. REUTERS/Kai Pfaffenbach

Only two flights are seen scheduled as the first charter flight by German air carrier Lufthansa starts for Tianjin, China, after the lockdown, as the spread of the coronavirus disease (COVID-19) continues, at the airport in Frankfurt, Germany, May 29, 2020. REUTERS/Kai Pfaffenbach

Karin Wasowski (R), controller at German car manufacturer Volkswagen AG talks to the media before she boards the first Lufthansa charter flight for Tianjin, after the lock down at the airport as the spread of the coronavirus disease (COVID-19) continues. in Frankfurt, Germany, May 29, 2020. REUTERS/Kai Pfaffenbach

A member of the organisation "Campact" attends a protest against planned state aid for the German carrier Lufthansa in front of the German Chancellery, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

A member of the organisation "Campact" attends a protest against planned state aid for the German carrier Lufthansa in front of the German Chancellery, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

Members of the organisation "Campact" gather in front of the German Chancellery to protest against planned state aid for the German carrier Lufthansa, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

Members of the organisation "Campact" gather in front of the German Chancellery to protest against planned state aid for the German carrier Lufthansa, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

Members of the organisation "Campact" gather in front of the German Chancellery to protest against planned state aid for the German carrier Lufthansa, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

Members of the organisation "Campact" gather in front of the German Chancellery to protest against planned state aid for the German carrier Lufthansa, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

Members of the organisation "Campact" gather in front of the German Chancellery to protest against planned state aid for the German carrier Lufthansa, amid the spread the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. REUTERS/Fabrizio Bensch

Airplanes of Lufthansa and EasyJet are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked at the Berlin Schoenefeld airport, amid the spread of the coronavirus disease (COVID-19) in Schoenefeld, Germany, May 26, 2020. REUTERS/Fabrizio Bensch

Airplanes of German carrier Lufthansa are parked on the tarmac at the airport in Frankfurt, Germany, May 25, 2020, as the spread of the coronavirus disease (COVID-19) continues. REUTERS/Kai Pfaffenbach

Airplanes of German carrier Lufthansa are parked on the tarmac at the airport in Frankfurt, Germany, May 25, 2020, as the spread of the coronavirus disease (COVID-19) continues. REUTERS/Kai Pfaffenbach

German Economy Minister Peter Altmaier and State Secretary at the economy ministry Ulrich Nussbaum attend a news conference on the "rescue package" for German airline Lufthansa, in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier and State Secretary at the economy ministry Ulrich Nussbaum arrive for a news conference on the "rescue package" for German airline Lufthansa, in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier briefs the media about the "rescue package" for German airline Lufthansa at the economy ministry in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier leaves a news conference on the "rescue package" for German airline Lufthansa at the economy ministry in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier briefs the media about the "rescue package" for German airline Lufthansa at the economy ministry in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier arrives for a news conference on the "rescue package" for German airline Lufthansa at the economy ministry in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier briefs the media about "rescue package" for German airline Lufthansa at the economy ministry in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

German Economy Minister Peter Altmaier briefs the media about "rescue package" for German airline Lufthansa at the economy ministry in Berlin, Germany May 25, 2020. Markus Schreiber/Pool via REUTERS

A passenger from the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), is tested for coronavirus, upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

First Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), lands at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. Picture taken through a window. REUTERS/Alkis Konstantinidis

First Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), is seen upon its arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. Picture taken through a window. REUTERS/Alkis Konstantinidis

First Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), is seen upon its arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. Picture taken through a window. REUTERS/Alkis Konstantinidis

Passengers of the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), arrive at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Passengers of the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), queue keeping social distance as they wait to be tested on the coronavirus disease (COVID-19), upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Passengers of the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), queue keeping social distance as they wait to be tested on the coronavirus disease (COVID-19), upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Passengers of the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), follow instructions upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A passenger from the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), is tested for coronavirus, upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Passengers from the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), listen instructions from a civil protection worker, upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A passenger from the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), is tested for coronavirus, upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A civil protection worker prepares to test passengers of the first Lufthansa flight to Greece on the coronavirus disease (COVID-19), following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Passengers of the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), fill in documents upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A passenger from the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), is tested for coronavirus after their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Passengers of the first Lufthansa flight to Greece, following a nationwide lockdown against the spread of the coronavirus disease (COVID-19), prepare their documents upon their arrival at the Eleftherios Venizelos International Airport in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis