A magnitude 8.9 earthquake has devastated Japan, causing some international airlines to cancel or divert their planes to Tokyo, according to media reports. 

Tokyo's Narita airport was closed, with everyone evacuated from the buildings. Meanwhile nearby Haneda airport shut down two of its four runways due to the natural disaster. 

Singapore Airlines diverted two flights headed to Tokyo, one from Los Angeles and one from Singapore. Both have landed at Haneda and Fukuoka, respectively. 

British Airways has cancelled all flights from Heathrow to Narita airport until further notice. 

If you are planning to travel to Japan in the next few days, please contact your carrier to make sure they have not changed or cancelled their flights.