Greece has been known for years as a cheap beach vacation destination. It has long offered a good alternative to the pricier Italian, or French, beaches, and has become even cheaper lately thanks to the country’s economic woes.
On the mainland, the entire Halkidiki area is your best bet if you are on a low budget but still want crystal clear water and white sandy beaches. Book your vacation ahead of time (typically by mid-March or April) to get even bigger discounts. If you are looking for cheaper islands, Thassos is a good choice, but so are Zakynthos or Corfu.