Once you reach Athens International airport you have a choice to fly by plane on a 50 minute connecting flight from Athens to Karpathos or arrange to catch a ferry boat. For airline travel to Karpathos from Athens see Aegean Airlines to Karpathos Your return flight airfare will be around €100-120 depending on when you book your flight. Aegean Airlines departs from the Emirates and internationally to Karpathos, so it may be more convenient to arrange your complete itinerary with the same airline internationally and locally. Peak season booking is higher and off season booking lower. A second option is by ferry. Information about Blue Star Ferries and reservations can be found at Blue Star Ferries Your boat ferry ride requires overnight travel so it is highly recommended that you reserve a cabin for a restful and comfortable ferry boat trip.