OASA operates a bus from Athens Airport (ATH) to Eretria every 30 minutes. Tickets cost $7 and the journey takes 50 min. 2 other operators also service this route.
How to get from Athens Airport (ATH) to Eretria
From Athens International Airport ✈ train to Ska, train to Sfendali, then taxi to Eretria. 2 h 45 min 84€. From Αερολιμενασ Αθηνων(Τερμα) bus to Athens KTEL Liosion, bus to Chalcis, then bus to Eretria. 4 h 2 min. From Athens Airport (ATH) taxi to Eretria. 1 h 18 min 115€. From Athens Airport (ATH) drive to Eretria. 1 h 18 min 16€.