Dear Guest , Thanks for your kind interest to Turista Travel. We will book your bus tickets domestic  or international before your arrival to Turkey in advance. We are official ticket seller for many bus companies.( Including Metro Turizm , Pamukkale Turizm , Suha Turizm , Nevsehir Tur ) Please let us know your destination and date details so that we can purchase your tickets accordingly and you can collect them from  our office conveniently located in Sultanahmet once you arrive to Istanbul.