Yonhap cited a senior UN source for its claim, which the UN has declined to comment on.
If it goes ahead, it would be the first visit by a UN Chief to the country in more than two decades.
In May, North Korea abruptly cancelled a visit by Mr Ban just a day before he was due to arrive.
North Korea faced heavy UN, EU and US sanctions for its nuclear tests.
The report said that it was likely he would meet North Korean Leader, Kim Jong-un during his trip. No exact date was given for the visit.
Mr Ban, a former South Korean Foreign Minister, would be the third secretary general to ever visit the North.