The New Istanbul Airport (ISL) is now due to open on March 3, 2019, pending any last-minute issues. The opening has been delayed twice.
Once fully operational, the IST airport code will be transferred to the new airport (it is currently using ISL) from the current Ataturk Airport.
Turkish Airlines has also announced it will move additional flights to the new airport before the full open. It is currently operating at both airport.
All photos by the airport authority.