Singapore Changi Airport (IATA: SIN, ICAO: WSSS), or simply Changi Airport, is the primary civilian airport for Singapore, and one of the largest transportation hubs in Southeast Asia. It is currently the Worlds Best Airport (Skytrax 2016), for the fourth consecutive year and counting (Skytraxs Worlds Best Airport 2013-2016) and is one of the worlds busiest airports by international passenger traffic and cargo traffic. The airport is located in Changi, at the eastern end of Singapore, approximately 17.2 kilometres (10.7 mi) northeast from Marina Bay (in Singapores Downtown Core), on a 13-square-kilometre (5.0 sq mi) site. It is operated by Changi Airport Group and it is the home base of Singapore Airlines, Singapore Airlines Cargo, SilkAir, Scoot, Tigerair, Jetstar Asia Airways and BOC Aviation. Changi Airport serves more than 100 airlines flying to some 320 cities in about 80 countries and territories worldwide. Each week, about 6,800 flights land or depart from Changi, or about one every 90 seconds, with 55.4 million passengers passing through the airport in 2015. For the 2015 full-year figures published by the airport, the airport handled 55,448,964 passengers (a 2.5% increase over the previous year), the most in its 34-year history. This made it the seventh busiest airport by international passenger traffic in the world and the second busiest in Asia by international passenger traffic in 2015. In December 2015, Changi Airport registered a total of 5.29 million passenger movements, the highest ever traffic the airport has achieved in a month since it opened in 1981. Its daily record was also broken on the Saturday before Christmas (19 December 2015), with more than 192,000 passengers passing through during the 24 hours. In addition to being an important passenger hub, the airport is one of the busiest cargo airports in the world, handling 1.85 million tonnes of cargo in 2015. The total number of commercial aircraft movements increased by 1.4% from the previous year to 346,334 in 2015.