There is no airport in Delphi. The closest airport is located in Athens, the capital of Greece. The airport of Athens operates domestic flights from most Greek airports and also operates many international flights.
Visitors can go from Athens to Delphi by rental car or bus. Many car rental companies have their base at the airport of Athens. The road trip from Athens to Delphi is about 3 hours. Alternatively, buses to Delphi depart from Liossion KTEL Bus Station in Athens.