Istanbul will welcome world's largest airport on 29th October. The airport will have the capacity to serve 90 million passengers per year. 29th October is the Republic Day of the country, on which the phase-1A of the project - Istanbul New Airport- will be inaugurated. The first phase was built by IGA in 7.5 billion Euro. The largest airport terminal 'under one roof' will be completed in 10 years with 3 more phases.