Ibera Airlines is offering the cheapest flights to Athens in September for $679 roundtrip including all taxes and fees. Flights have a quick stopover in Madrid.

The cheapest flights with Iberia are on Tuesdays and Wednesdays.

British Airways and KLM both also offer discount flights to Athens for about 700 dollars each way. Most British Airways flights are $685 roundtrip.

Where to Go from Athens

The most popular party islands are Mykonos, Ios, Santorini, Rhodes, Kos, or Korfu. Actually, though in September, the party vibe is usually toned down considerably compared to July and August, though still going.

For a more relaxed atmosphere, try visiting Crete or Kefalonia