from Beijing South Railway Station to Capital Airport

You may take airport shuttle bus line 10 from South Railway Station, and get off at Capital Airport Station. The bus is available from 6:30 to 20:00, and the bus fare is CNY 24. :)

You can also take subway line 4 to Xuanwumen, change to line 2 to Dongzhimen, and then change to Airport Express Line to get to the airport.