Ramaphosa is due to attend a round table "Men's Dialogue" at Constitution Hill in Johannesburg on promoting health and well-being of families and communities on the same morning.
On Wednesday, it was reported that the defence department hired the Bombardier Aerospace plane through a state-managed contract with service provider ExecuJet.
The Bombardier Aerospace, with registration ZS-OAK, left Waterkloof Air Force Base last Friday night under the call sign "South Africa 2", reserved for the deputy president.
Ramaphosa was then photographed arriving in Tokyo in the aircraft on Saturday night.
Ramaphosa and the delegation, which included Cabinet ministers, were in Japan to drum up business for South Africa.
According to EWN, the plane is registered to Westdawn Investments, which is owned by the Gupta family.
The Guptas were granted permission to land a private plane for a family wedding in 2013 at the Waterkloof Air Force Base.
Jenni Evans: News24