Airline traffic in South Korea and other countries in the Asia-Pacific region will remain well below 2019 levels next year due to the coronavirus's impact on the airline industry, according to a global ratings agency Saturday.

The pace of the recovery will depend on each market's relative success in bringing the COVID-19 pandemic under control to help improve passenger confidence and reduce the risk of further travel restrictions, Fitch Ratings said.

"Airline passenger volume could improve faster than we forecast if an effective vaccine is distributed sooner than we believe or if there is more success in containing the pandemic. However, we foresee flat demand in 2021 that is well below the 2019 base should there be limited progress on this measure," it said.

The ratings firm picked China as the country whose air passenger traffic shows a rapid recovery thanks to its success in containing the pandemic. 

Korean airlines have suspended most of their flights on international routes since March as more than 180 countries and territories strengthened entry restrictions amid virus fears.

Korean Air Lines Co. and Asiana Airlines Inc., the country's two biggest carriers, posted deepened net losses in the January-June period compared with a year earlier amid virus woes.

Korean Air's net losses widened to 619.49 billion won ($523 million) in the first half from 482.01 billion won a year ago, while Asiana's net losses also deepened to 633.26 billion won from 291.62 billion won during the same period. (Yonhap)