What is An Istanbul Card?
Istanbul Transportation Card
You can easly find in the Airport.
Public transportation ranks first among the cheapest ways to visit Istanbul. An Istanbul Transportation Card is required to use public transport at all times. You can access all public transportation lines and types of vehicles in Istanbul with an Istanbul Transportation Card as the Istanbul Metropolitan Municipality is in charge of the operation of all public transportation in the city.
Istanbul Transportation Card offers several advantages, some of which can be listed as saving time and being a budget friendly option for urban transportation. That's why the locals of Istanbul always carry an Istanbul Transportation Card. The card is versatile and useful as it is valid for all types of public transportation