British Airways is suspending all direct flights between the UK and Japan.
The last flight from Tokyo to London will be on Wednesday (April 8).
The move comes as a state of emergency is expected to be declared in Japan following 3,600 cases of coronavirus and 85 deaths.
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Direct flights from Japan to UK are still being operated by Japan Airlines and All Nippon Airways.
The Foreign Office said in updated travel advice: “There are a limited number of indirect flights to the UK transiting via a third country, including with Qatar Airways and Air France, but we advise you to contact your airline or travel agent to check availability and re-book your flight if necessary.
“A significant number of airlines have suspended flights, and airlines will continue to review their services in the coming days.
“Those who want to return to the UK soon should take account of the fast moving situation and plan accordingly.”
The British Embassy is issuing regular updates on Twitter and Facebook with the latest available information on departure options from Japan, the FCO added.