Bangladesh has suspended flights to all countries except the UK and China until April 15 following the global outbreak of coronavirus.   The flight operation with Bangkok will remain suspended from 12am on Thursday and while with Hong Kong from March 29, said Air Vice Marshal M Mafidur Rahman, Chairman of Civil Aviation Authority of Bangladesh.   Earlier on March 21, international commercial passenger flights with 10 counties -- Malaysia, Oman, Singapore, Qatar, Kuwait, Saudi Arabia, United Arab Emirates, Turkey, India, and Bahrain –-- were suspended.