Full-time students are eligible for the International Student ID Card (ISIC; www.isiccard.com), which entitles the bearer to cut-price transport and discounts at museums, theatres and other attractions, though often not accepted as valid proof of age. If you’re not a student but aged under 26, you can qualify for the International Youth Travel Card, which provides similar benefits to the ISIC. Teachers qualify for the International Teacher Identity Card (ITIC), offering insurance benefits but limited travel discounts.
Seniors are entitled to a discount on bus passes in the major cities; Olympic Airways also offer discounts on full fares on domestic flights. Proof of age is necessary.