The Oita Airport is a small airport with only a few flights from here mostly by JAL and ANA to Osaka-Itami airport and to Tokyo Haneda Airport and one international flight to Incheon Airport of Seoul by Korean Air.
The airport has one terminal where domestic departures are at the left side and international departures on the right side. Arrival area is in the middle. Inside the terminal are several shops and stores as well as locker rooms.
Oita Airport is not a large airport so there are not many flights departing here. There are only a few destinations that you can reach from Oita Airport, most of these are operated by Brussels Airlines. Many people take a flight to Tokyo and transfer to another flight there.