A U.N. agency agreed on Friday to prioritize studying options for a long-term goal to reduce aviation emissions aimed at combating climate change, but made no firm commitments and faced pushback from China and India.

The Swedish concept of flygskam or "flight shame" looks to be going global after a survey by Swiss bank UBS revealed that environmental concerns have led many people to change how they travel.

With the opening of the new, gigantic Beijing Daxing International Airport, domestic and foreign carriers will be able to add more slots, and the increased capacity is expected to offer passengers more options with better facilities and cheaper tickets, industry experts said.

The International Air Transport Association (IATA) expressed high expectations for the outcomes of the 40th Assembly of the International Civil Aviation Organization (ICAO), beginning today in Montreal.

A global deal to curb carbon emissions from flying will take center stage when the U.N. aviation agency's triennial assembly opens on Tuesday in Montreal under the shadow of protests led by Swedish activist Greta Thunberg later in the week.

Variable factors are boosting the overseas travelling market's boom, of which the large number of newly - opened international air routes are critical. "In the past year, a lot of tourists' spots overseas deregulated the visa policies for Chinese travelers. Simplified regulations, densified air routes and propaganda in China have offered huge drives for the market", said Dai Bin, Dean of China Tourism Academy. In the early half of the year, astonishingly, growth rate of outbound tours stays in 14%, which shows with higher income, Chinese people are more willing to travel, facilitating the strong growth in tourism market.

Global aviation leaders will be under pressure to deepen efforts to tackle airline emissions as they gather this week under the shadow of protests led by Swedish activist Greta Thunberg.

As part of its ongoing commitment to sustainability, Delta Air Lines is investing US$2 million to partner with Northwest Advanced Bio-fuels, LLC (NWABF) for the feasibility study of a biofuel production facility to produce sustainable aviation fuel and other biofuel products.

Germany's Lufthansa and charter carrier Condor are discussing a possible code-sharing deal that could help save both money on long haul routes, sources familiar with the matter said.

Air BP, the international aviation fuel products and services supplier, will highlight the expansion of its pioneering carbon offset program for business aviation in Brazil during the largest business aviation conference and exhibition in Latin America, LABACE from August 13 to 15.