Air Busan will launch three routes to Southeast Asia this month.
The local low-cost carrier will start a flight between Incheon and Kota Kinabalu on the 24th, followed by a Busan to Da Nang route on the 29th and an Incheon to Nha Trang route on the 30th.
The Busan-Da Nang route will resume for the first time in about 28 months.
Six more routes are expected to open in July from Busan.