A powerful typhoon was expected to make landfall somewhere between the Tokai and Kanto regions by early Friday, the Meteorological Agency said.
Typhoon Mawar affected air and ferry services throughout Thursday. Japan Airlines and All Nippon Airways canceled many domestic flights, mainly between Tokyo and western cities.
Passenger ferries between Tokyo and the Izu Islands, as well as those between Nagoya and Tomakomai, Hokkaido, were also canceled.