Beijing international flights are in Terminal 2 (T2) and Terminal 3 (T3).

Terminal 2:

Airlines at Terminal 2: KLM Royal Dutch Airlines (Amsterdam), Malaysia Airlines (Kuala Lumpur), Mongolian Airlines (Ulaanbaatar), Northwest Airlines (Detroit, Tokyo Narita International Airport), and Philippine Airlines (Manila).

Terminal 3:

Airlines at Terminal 3: Qantas (Sydney), Qatar Airways (Doha), British Airways (London Heathrow), Israel Airlines (Tel Aviv), and others.

International Routes:Anchorage, Athens, Bangkok, Busan, Copenhagen, Daegu, Delhi, Dubai, Frankfurt, Fukuoka, Hiroshima, Ho Chi Minh City, Kuwait, London, Los Angeles, Madrid, Melbourne, Moscow, Munich, Nagoya, and more.

Expanded Information:

Beijing Capital International Airport (BCIA) is divided into two terminals: Terminal 1, Terminal 2 and Terminal 3. Both Terminal 2 and Terminal 3 have international flights.

Terminal 1 is the dedicated terminal for domestic flights of the Hainan Airlines Group (including Hainan Airlines, Daxinhua Airlines, Daxinhua Express, Golden Deer Airlines, Capital Airlines and Tianjin Airlines).

Terminal 2 serves both domestic and international flights, and is connected to Terminals 1 and 2 by a passenger walkway with several automatic conveyor belts to reduce fatigue over long distances.

Terminal 3 serves Air China, Shenzhen Airlines, Shandong Airlines, Shanghai Airlines, Sichuan Airlines, as well as Star Alliance, oneworld and non-alliance airlines.

Reference:

Beijing Capital International Airport Terminal_Baidu Encyclopedia