There is no airport in Meganisi. The closest airport is in Preveza/Aktion, in the Greek mainland. The airport of Preveza/Aktion works only in summer and receives charter flights from various European airports and few airports in Greece.
The airport of Preveza/Aktion is 45 min drive from the port of Nidri in Lefkada, from where ferries to Meganisi depart. Many car rental agencies have their base at the airport of Aktion to serve tourists. Book your ferry tickets online!