Of the 206 Japenese nationals evacuated from the Chinese city of Wuhan, four have been reported ill.
They will now undergo medical checks at a hospital designated for infectious diseases.
The remaining passengers will also under health checks before they are allowed to go home, officials added.
The first chartered flight from Wuhan, where the coronavirus was first detected, arrived in Tokyo on Wednesday.
So far, Japan has confirmed seven cases.
The death toll from the coronavirus, believed to have originated in a Wuhan market which illegally sold wildlife, rose sharply to 132 on Wednesday, with nearly 1,500 new cases.
Meanwhile, efforts are on to evacuate another 650 Japanese citizens, with Prime Minister Shinzo Abe setting up a special task force to deal with the epidemic.
US President Donald Trump and Russian President Vladimir Putin indicated they would not attend what could be the first direct peace talks between Moscow and Kyiv in three years on Thursday, with the Kremlin sending instead a group of experienced technocrats.
Agreements signed by US President Donald Trump and Qatar's Emir Sheikh Tamim bin Hamad Al-Thani on Wednesday will "generate an economic exchange worth at least $1.2 trillion," the White House said in a fact sheet summarizing some of the deals' details.
US President Donald Trump met with Syria's President Ahmed al-Sharaa in Saudi Arabia on Wednesday, after a surprise US announcement it would lift all sanctions on the government.
Israeli military strikes killed at least 80 Palestinians across the Gaza Strip on Wednesday, local health authorities said, in a significant escalation of the bombardment.
Lyle and Erik Menendez, who have served 35 years of a life prison term for the 1989 shotgun murders of their parents in their Beverly Hills home, were ruled eligible for parole by a Los Angeles judge at a re-sentencing hearing on Tuesday.
US President Donald Trump's visit to the UAE has been widely hailed by Emirati and American business leaders as a pivotal moment in strengthening strategic partnerships between the two nations.