Korean Air and China Eastern Airlines have added five flight routes to their code-share cooperation, under which both carriers can sell seats on each other's flights.

The five routes, including Shanghai-Seoul and Beijing-Seoul, expanded the cooperation from the two previous routes to seven.

The number of flights had been increased from 36 to 160.

Under the expanded cooperation, passengers could now choose either 77 flights operated by China Eastern or 74 operated by Korean Air.

Korean Air currently operates passenger flights to 21 destinations in China, including Hong Kong SAR.