What is your departure city? Is it Lagos? From Lagos to Beijing, the direct flight CZ332 of China Southern Airlines is available on each Tuesday, Thursday and Sunday. And also some connecting flights with transfers at Dubai, Doha, London and etc. are available daily. For detailed flight info, you can check on the page. For the fare, you would better consult some local booking agencies with your departure date since it is hard to find the detailed international fare without the date.