Istanbul Airport (IATA: IST, ICAO: LTFM) is the larger of two international airports serving Istanbul, Turkey. It is located in the Arnavutköy district on the European side of the city. It is the largest airport in Turkey and the 2nd busiest airport in Europe as well as the 2nd busiest airport in the Middle East.

All scheduled commercial passenger flights were transferred from Atatürk Airport to Istanbul Airport on 6 April 2019, following the closure of Atatürk Airport for scheduled passenger flights. The IATA airport code IST was also transferred to the new airport.

It served more than 76 million passengers in 2023, making it 2nd-busiest airport in Europe of 2023, after Heathrow Airport and the 2nd-busiest airport in the Middle East, after Dubai International Airport, it was also the 7th-busiest airport in the world of 2023 in terms of total passenger traffic and, by serving more than 58 million international passengers, the 6th-busiest airport in the world in terms of international passenger traffic according to ACI World traffic values. It serves up to 122 countries and is the hub for Turkish Airlines.