Indian nationals may please note that a valid visa for Turkey is required for transfer between Ataturk Airport, Istanbul and Sabiha Gökçen Airport, Istanbul during transit at Istanbul. Without a valid Turkish visa, travel from one airport to the other airport within Istanbul is not permitted.
In addition, those who intend to travel by Turkish Airlines with a transit connection at Istanbul are advised to carefully check their visas for travel to the destination Country and ensure that they are valid in all respects before starting their journey.
Please note that double/multiple entry Schengen visa is required if you are transiting through Istanbul/Turkey while travelling between destinations in the Schengen zone. Kindly also check with the airlines before your travel.