The Ministry of Land, Infrastructure and Transport is predicting that roughly 30-million people will travel around the country this year, resulting in two more hours of slow traffic than last year.
That means it will take about seven-and-a-half hours to get from Seoul to Busan -- usually a four-hour drive.
For those planning to travel by car, the longest travel times for getting out of Seoul will be on the morning of Saturday the 26th.
The longest travel times for those heading back into the city will be the next day on Chuseok afternoon, with nearly seven.six million people expected to be on the road.
For those staying in Seoul, public transportation services will be expanded.
City bus and subway services will operate on extended hours until 2 a.m. on Sunday and Monday.
That's two hours later than normal.
More taxis and late-night buses will also be running during this period, and express and intercity buses will run more frequently.
Lee Ji-won, Arirang News.