There is no airport in Aegina.
The closest airport is the International Airport of Athens, which receives numerous domestic and international flights every day.
The only way to reach the island is to take a ferry from the port of Piraeus in Athens or the area of Methana in the Peloponnese.
To get to the port of Piraeus, you can use the metro, the suburban railway, or a taxi, but you can also book a private transfer. Ferries to Aegina depart daily from Piraeus and their frequency increases during summer.