The budget carrier plans to expand its fleet to 39 B737-800NG planes by the end of this year from the current 34.

In the January-June period, Jeju Air will post "better" earnings results compared with the same period a year ago when it posted a 93 percent on-year jump in net profit, Jeju Air Chief Financial Officer Kim Tae-yoon told Yonhap News Agency early this month.

In the first half of last year, net profit soared to 32.3 billion won from 16.6 billion won a year earlier. Operating profit jumped to 43.4 billion won from 16.2 billion won during the cited period. Sales rose 40 percent to 468.2 billion won from 335.3 billion won.

Jeju Air is 59.59 percent owned by Aekyung Group, a cosmetics-to-health care conglomerate. (Yonhap)