|The late Yoon Ki-jung / Yonhap|
The senior Yoon, 92, had been hospitalized at Seoul National University Hospital recently for illnesses related to old age, according to the presidential office.
It said the president stayed by his father's deathbed after attending a National Liberation Day ceremony.
"To avoid a vacuum in state affairs, the president decided to hold the funeral for family members only. He seeks understanding for not receiving callers or flowers," the office said in a text message sent to reporters.
This is the second time an incumbent president has lost a parent, following former President Moon Jae-in whose mother died in 2019.
|The undated photo shows Yoon Ki-jung, center, the father of President Yoon Suk Yeol, with his family. Screenshot from President Yoon's Instagram account|