FAQs → Turkey → Istanbul → Istanbul Transportation → HavaIST Airport ShuttleHow many buses are in the HavaIST airport shuttle fleet? A How many buses are in the HavaIST airport shuttle fleet?There are 105 airport shuttle buses in the HavaIST fleet that transports passengers of the New Istanbul Airport to and from various points in the city. Some of the more popular routes go through Taksim, Kadikoy, Besiktas, and Bakirkoy.