Korea and China have agreed to increase the number of flights between the two countries, both on existing routes and to new destination.
The Ministry of Land, Infrastructure, and Transport on Thursday flights will grow from the current 426 a week on 45 routes to 516 flights on 62 routes.
This is the biggest increase since 2006.
The 17 new routes include Seoul-Shijiazhuang.
There has been a steady increase in the number of passengers on Korea-China flights, but regular flights have not kept pace, resulting in a serious shortage.
Some charter flights were added to tackle the problem, but they were not enough.
A ministry spokesman said, "This expansion will solve the shortage, and Korean budget airlines that have been operating irregular charter flights will be able to gain more stability."