About 25km northeast of the city centre. International arrivals and departures use both terminal 2 and 3. All Air China flights use Terminal 3. Shuttles link the terminals. Terminal 1 is used by a few airlines for domestic routes. The Airport Express, a light-rail link, runs between terminals 2 and 3 and Sanyuanqiao station on line 10 of the subway network and Dōngzhímén station on lines 2 and 13.