Air Seoul is wholly owned by the Republic of Korea (RoK)’s Asiana Airlines Inc. Starting December 18, Air Seoul plans to offer seven flights a week to Nha Trang as it strives to strengthen services on routes to Southeast Asia to offset declining demand on Japanese routes, the company said in a statement.

Since early July, RoK airlines have halted or reduced services on their Japanese routes, while expanding flights on non-Japanese ones after Japan implemented export restrictions of key materials to the RoK.