Jeju Air increases Oita - Seoul/Incheon flights. it will be 5 flights for each way per week from January 12.

Jeju Air increases Oita - Seoul/Incheon flights. it will be 5 flights for each way per week from January 12.
チェジュ航空、大分〜ソウル/仁川線を増便　1月12日から週5往復
https://www.traicy.com/posts/20240113287908/

I wonder why there is no flight on Sundays. There must be tourists going to Seoul or Oita for weekends. Those passengers will have to board airplanes from or to Kitakyushu Airport or Fukuoka Airport, instead of Oita Airport.