A woman speaks to staff at the Go First airline ticketing counter at the Chhatrapati Shivaji International Airport in Mumbai, India, May 3, 2023. REUTERS/Francis Mascarenhas 

Staff works beside railroad tracks as an IT failure at Lufthansa stranded passengers and forced flights to Germany's busiest airport to be canceled or diverted in Frankfurt, Germany, February 15, 2023, with the airline blaming botched railway engineering works that damaged broadband cables. REUTERS/Timm Reichert 

Staff works beside railroad tracks as an IT failure at Lufthansa stranded passengers and forced flights to Germany's busiest airport to be canceled or diverted in Frankfurt, Germany, February 15, 2023, with the airline blaming botched railway engineering works that damaged broadband cables. REUTERS/Timm Reichert 

Staff works beside railroad tracks as an IT failure at Lufthansa stranded passengers and forced flights to Germany's busiest airport to be canceled or diverted in Frankfurt, Germany, February 15, 2023, with the airline blaming botched railway engineering works that damaged broadband cables. REUTERS/Timm Reichert 

Staff is pictured next to the Emirates Airlines Boeing 777-300ER, during a milestone demonstration flight while running one of its engines on 100% (SAF) at Dubai airport, in Dubai, United Arab Emirates, January 30, 2023. REUTERS/Rula Rouhana 

A staff is pictured as he fills up the Emirates Airlines Boeing 777-300ER with Sustainable Aviation Fuel (SAF), during a milestone demonstration flight while running one of its engines on 100% (SAF) at Dubai airport, in Dubai, United Arab Emirates, January 30, 2023. REUTERS/Rula Rouhana 

Soccer Football - German women's soccer team returns after Euro 2022 final England vs Germany - Romerberg, Frankfurt, Germany - August 1, 2022 General view as Germany team members and airline staff members pose for a picture outside the plane after arriving in Frankfurt REUTERS/Heiko Becker 

Staff members from the morgue carry the body of a victim of the Tara Air passenger plane, that crashed with 22 people on board while on its way to Jomsom, at the morgue in Kathmandu, Nepal May 31, 2022. REUTERS/Navesh Chitrakar 

A staff from the morgue carries the body of a victim of the Tara Air passenger plane, that crashed with 22 people on board while on its way to Jomsom, at the morgue in Kathmandu, Nepal May 31, 2022. REUTERS/Navesh Chitrakar 

Militia members and other staff hold umbrellas as they stand next to the entrance of Lu village near the site where a China Eastern Airlines Boeing 737-800 plane flying from Kunming to Guangzhou crashed, in Wuzhou, Guangxi Zhuang Autonomous Region, China March 23, 2022. REUTERS/Carlos Garcia Rawlins 

Staff members promote Volaris Airline at the new Felipe Angeles International Airport, on the day of the inauguration, in the Zumpango municipality in Mexico State, Mexico March 21, 2022. REUTERS/Luis Cortes 

A man stands next to an airport staff member outside the area where relatives of the passengers of the China Eastern Airlines Boeing 737-800 plane, which crashed in Wuzhou flying from Kunming to Guangzhou, wait for news, at Guangzhou Baiyun International Airport in Guangzhou, Guangdong province, China March 22, 2022. REUTERS/Carlos Garcia Rawlins 

Women walk next to an airport staff member before entering the area where relatives of the passengers of the China Eastern Airlines Boeing 737-800 plane, which crashed in Wuzhou flying from Kunming to Guangzhou, wait for news, at Guangzhou Baiyun International Airport in Guangzhou, Guangdong province, China March 22, 2022. REUTERS/Carlos Garcia Rawlins 

People talk to airport staff before entering the area where relatives of the passengers of the China Eastern Airlines Boeing 737-800 plane, which crashed in Wuzhou flying from Kunming to Guangzhou, wait for news, at Guangzhou Baiyun International Airport in Guangzhou, Guangdong province, China March 21, 2022. REUTERS/Carlos Garcia Rawlins 

Empty counters of German airlines Lufthansa at Frankfurt Airport are pictured during a strike of security staff at various German airports to put pressure on management in wage talks in Frankfurt, Germany, March 15, 2022. REUTERS/Timm Reichert 

Airline staff wear personal protective equipment (PPE) to protect against coronavirus disease (COVID-19) disease as they work at Beijing Capital International airport in Beijing, China March 13, 2022. REUTERS/Soe Zeya Tun 

Airline staff wear personal protective equipment (PPE) to protect against coronavirus disease (COVID-19) disease as they work at Beijing Capital International airport in Beijing, China March 13, 2022. REUTERS/Soe Zeya Tun 

Airline staff wear personal protective equipment (PPE) to protect against coronavirus disease (COVID-19) disease as they work at Beijing Capital International airport in Beijing, China March 13, 2022. REUTERS/Soe Zeya Tun 

Airline staff wear personal protective equipment (PPE) to protect against coronavirus disease (COVID-19) disease as they work at Beijing Capital International airport in Beijing, China March 13, 2022. REUTERS/Soe Zeya Tun 

Norse Atlantic CEO Bjoern Tore Larsen attends an interview with Reuters in front of a Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

General view of a Norse Atlantic Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

View of an engine of a Norse Atlantic Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

Norse Atlantic CEO Bjoern Tore Larsen attends an interview with Reuters in front of a Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

General view of Norse Atlantic Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

Norse Atlantic CEO Bjoern Tore Larsen attends an interview with Reuters in front of a Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

General view of a Norse Atlantic Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

General view of a Norse Atlantic Boeing 787 Dreamliner aircraft parked at Oslo (Gardermoen) Airport, Norway March 4, 2022. Picture taken March 4, 2022. REUTERS/Victoria Klesty 

An American Airlines worker is seen at the Los Angeles international airport as more than 1,400 American Airlines flights over the weekend have been canceled due to staff shortages and unfavorable weather in Los Angeles, California, U.S., October 31, 2021. REUTERS/Carlos Barria 

A screen showing cancelled flights is seen at Los Angeles International Airport as more than 1,400 American Airlines flights over the weekend have been canceled due to staff shortages and unfavorable weather in Los Angeles, California, U.S., October 31, 2021. REUTERS/Carlos Barria 

Passengers deplane a flight as more than 1,400 American Airlines flights over the weekend have been canceled due to staff shortages and unfavorable weather in Los Angeles, California, U.S., October 31, 2021. REUTERS/Carlos Barria 

A passenger waits to board a flight as more than 1,400 American Airlines flights over the weekend have been canceled due to staff shortages and unfavorable weather in San Francisco, California, U.S., October 31, 2021. REUTERS/Carlos Barria TPX IMAGES OF THE DAY 

A man boards a flight between San Francisco and Los Angeles as more than 1,400 flights over the weekend have been canceled due to staff shortages and unfavorable weather in San Francisco, California, U.S., October 31, 2021. REUTERS/Carlos Barria 

An American Airlines worker is seen at the Los Angeles international airport as more than 1,400 American Airlines flights over the weekend have been canceled due to staff shortages and unfavorable weather in Los Angeles, California, U.S., October 31, 2021. REUTERS/Carlos Barria 

Passengers wait to board a flight as more than 1,400 American Airlines flights over the weekend have been canceled due to staff shortages and unfavorable weather in San Francisco, California, U.S., October 31, 2021. REUTERS/Carlos Barria 

A Binter airlines staff member walks next to empty checking desks after flights were cancelled due to an accumulation of volcanic ash, at La Palma Airport, outside Santa Cruz de la Palma, on the Canary Island of La Palma, Spain October 17, 2021. REUTERS/Susana Vera 

A passenger walks at the La Palma Airport, as airlines remained cancelled as the volcano continued to spew lava and emit ash clouds over the surrounding area a week after it erupted on the Canary Island of La Palma, Spain September 26, 2021.REUTERS/Guillermo Martinez REFILE - CORRECTING INFORMATION 

A Swissport staff unloads containers from a Swiss airline aircraft at Cointrin airport in Geneva, Switzerland June 24, 2021. REUTERS/Denis Balibouse 

Staffs of Japan Airlines (JAL) wait to receive a dose of the Moderna coronavirus disease (COVID-19) vaccine at the company's facility at Haneda airport in Tokyo, Japan June 14, 2021. REUTERS/Kim Kyung-Hoon 

A vial containing doses of the Moderna vaccine against the coronavirus disease (COVID-19) and syringes are pictured at Japan Airlines (JAL) facility where its staff receive the vaccines at Haneda airport in Tokyo, Japan June 14, 2021. REUTERS/Kim Kyung-Hoon 

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri 

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri 

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri 

An Ethiopian Airlines staff secures the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri 

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri 

Staff members wearing protective gear following the coronavirus disease (COVID-19) outbreak stand near China Eastern Airlines check-in machines at Shanghai Hongqiao International Airport as the Spring Festival travel season begins ahead of the Chinese Lunar New Year, in Shanghai, China January 28, 2021. REUTERS/Aly Song 

A visitor and an airline company staff member wearing protective face masks are seen at the arrival gate of the international flight terminal at Tokyo International Airport, commonly know as Haneda airport, amid the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan December 28, 2020. REUTERS/Issei Kato 

An airline company staff member works at the check-in area of the international flight terminal at Tokyo International Airport, commonly know as Haneda airport, amid the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan December 28, 2020. REUTERS/Issei Kato 

Flight service staff member Laura Mansell poses amongst the economy passenger seating area of Boeing 747 jumbo G-VROY, named "Pretty Woman", being retired from passenger service by Virgin Atlantic Airways, before its redeployment as a freight and military carrier, in a maintenance hanger at Heathrow Airport, London, Britain, December 11, 2020. REUTERS/Toby Melville 

Flight service staff members Dan Gregory and Laura Mansell pose in the crew rest area of Boeing 747 jumbo G-VROY, named "Pretty Woman", being retired from passenger service by Virgin Atlantic Airways, before its redeployment as a freight and military carrier, in a maintenance hanger at Heathrow Airport, London, Britain, December 11, 2020. REUTERS/Toby Melville 

Flight service staff members Dan Gregory and Laura Mansell pose in the crew rest area of the Boeing 747 jumbo G-VROY, named "Pretty Woman", being retired from passenger service by Virgin Atlantic Airways, before its redeployment as a freight and military carrier, in a maintenance hanger at Heathrow Airport, London, Britain, December 11, 2020. REUTERS/Toby Melville 

Enrique Beltranena, President and Chief Executive Officer (CEO) of Mexico's airline Volaris, attends an interview with Reuters, in Mexico City, Mexico November 25, 2020. REUTERS/Alberto Fajardo 

Enrique Beltranena, President and Chief Executive Officer (CEO) of Mexico's airline Volaris, attends an interview with Reuters, in Mexico City, Mexico November 25, 2020. REUTERS/Alberto Fajardo 

Enrique Beltranena, President and Chief Executive Officer (CEO) of Mexico's airline Volaris, attends an interview with Reuters, in Mexico City, Mexico November 25, 2020. REUTERS/Alberto Fajardo 

Enrique Beltranena, President and Chief Executive Officer (CEO) of Mexico's airline Volaris, attends an interview with Reuters, in Mexico City, Mexico November 25, 2020. REUTERS/Alberto Fajardo 

Norwegian Air crew staff demonstrate in front of the Norwegian Parliament to seek state support for the crisis-stricken airline, in Oslo, Norway November 18, 2020. REUTERS/Gwladys Fouche 

Norwegian Air crew staff demonstrate in front of the Norwegian Parliament to seek state support for the crisis-stricken airline, in Oslo, Norway November 18, 2020. REUTERS/Gwladys Fouche 

Norwegian Air crew staff demonstrate in front of the Norwegian Parliament to seek state support for the crisis-stricken airline, in Oslo, Norway November 18, 2020. REUTERS/Gwladys Fouche 

Norwegian Air crew staff demonstrate in front of the Norwegian Parliament to seek state support for the crisis-stricken airline, in Oslo, Norway November 18, 2020. REUTERS/Gwladys Fouche 

Norwegian Air crew staff demonstrate in front of the Norwegian Parliament to seek state support for the crisis-stricken airline, in Oslo, Norway November 18, 2020. REUTERS/Gwladys Fouche 

Norwegian Air crew staff demonstrate in front of the Norwegian Parliament to seek state support for the crisis-stricken airline, in Oslo, Norway November 18, 2020. REUTERS/Gwladys Fouche