Istanbul Airport (IST, IGA) is the main airport in the city. Located on the European side of Istanbul. The second, “minor” airport of the city, Sabiha Gökçen International Airport, is located on the Asian side. The Istanbul Airport is operational for only a couple of years, having served more than 40 million passengers. In its final phase, approximately by 2025, the airport will be able to handle up to 200 million passengers annually, becoming the biggest airport worldwide in terms of passenger traffic.