Terminal 2 serves both domestic and international flights. A portion of the airline flights at Terminal 2 were relocated to Terminal 3 in two phases on February 29 and March 26, 2008, after the opening of Terminal 3 at Beijing Capital International Airport.

Beijing Capital International Airport Terminal 3 consists of the T3-C main building, T3-D, T3-E International Terminal Corridor and the front of the building transportation system. five floors above ground and two underground floors of the T3 main building, the T3 main building, on the first floor for the baggage handling hall, the remote aircraft waiting hall, domestic and international VIP; the second floor is the passenger arrival hall, baggage reclaim hall, the Jetty platform; on the third floor of the domestic passengers out of Hong Kong hall; T3-C (domestic area) and T3-E (international area) are symmetrical in a zigzag shape,

Terminal 3 has a total floor area of 986,000 square meters and is divided into three functional zones, T3-C, T3-D and T3-E. T3-C is used for domestic, international and Hong Kong, Macao and Taiwan flights. T3-C area is used for domestic and international and Hong Kong, Macao and Taiwan flight procedures, domestic departures and domestic and international baggage claim, T3-D area is used for a small portion of Air China's domestic departures and arrivals (most of which are in T3-C area), and T3-E area is used for international and Hong Kong, Macao and Taiwan departures and arrivals.