Japan stopped accepting new foreign arrivals on Tuesday due to concerns about the global spread of the Omicron variant.
The first international flight to arrive at Narita Airport near Tokyo before noon Tuesday was from the Philippines capital Manila. No new foreign arrivals were seen disembarking.
Japan had reopened its borders to foreign students, business people and technical trainees under certain conditions from November 8. But after only three weeks the measure has been suspended.
Quarantine rules for Japanese and others re-entering the country will also be tightened again from Wednesday.
Instead of a minimum of three days, they will be told to isolate at home or other facilities for 14 days.