Olympic Air allows you to change your ticket on line. Simply select "Change Booking" and reschedule the date and/or the departure time of your flight. All you need to do is to fill in your last name and your Booking Reference or your Ticket Number. Cancellation of an unused or partially used domestic or international ticket is subject to a €20 refund fee. Infant tickets are exempt from the refund fee. Ticket changes through the Call Center or Olympic Air ticketing offices, are subject to a €20 reissue fee. Tickets issued by our Reservations Department or our airport offices within Greece are subject to a service fee which is not refundable in case of cancellation. Please contact your travel agent for changes or for booking cancellations of tickets that they issued.