HAVAİST — Istanbul Airport Shuttle App

HAVAİST runs the official express bus service between Istanbul Airport (IST) and dozens of pickup points across both the European and Asian sides of Istanbul.

The app handles booking, e-tickets, and live ETA tracking. Significantly cheaper than a taxi and faster than the metro for many routes — the dedicated bus lanes mean HAVAİST avoids most of Istanbul's airport-route congestion.