There is no airport on Ios island. The nearest airport is located on Santorini island, the most renowned island in Greece.
The airport of Santorini is an international one, receiving flights from Greek and foreign cities daily during summer.
From the port of Athinios in Santorini, there are regular ferries to Ios in the high season. To go from the airport to the port, you can take a local bus or a taxi. Alternatively, you can book your Santorini airport transfer online.
Moreover, visitors can reach the island of Ios by ferry. Ferries to Ios depart from all three ports of Athens (Piraeus, Rafina, Lavrio).