All Nippon Airways has canceled all 406 domestic flights to and from Tokyo's Haneda Airport and Narita Airport on Saturday, due to approaching Typhoon Hagibis.
ANA says it may also cancel some domestic flights using Chubu International Airport in Aichi Prefecture and some other airports in Osaka Prefecture.
Japan Airlines has already cancelled about 350 fights, almost all of its domestic flights, to and from Haneda and Narita airports on Saturday.
Other airlines operating in Japan say they may not operate some flights on Saturday and Sunday.
They are urging passengers to check the latest information on their websites or social media.