Which is the cheapest way of getting from Ataturk airport to Sultan Hostel and back?
A combination of the tram(above ground) and subway (below ground). You can buy tickets at the station once you get there. You will get off at the Sultanahmet stop and walk to Sultan from there. Hope that helps!
From Atatürk Airport or the Bus Station
Take the metro from airport to Aksaray (last stop) then take the tram from Aksaray/Yusufpaþa station to Kabatas direction, get off at Sultanahmet tram stop.
From Sabiha Gökçen Airport
Simply take the Havas Bus to TAKSIM and take a taxi to the hostel.
From Sirkeci Train Station
Once you go out of the train station follow the tram line all the way up until SULTANAHMET.
Get an answer from Sultan Hostel staff and past guests.