The best day to arrive at Athens is Tuesday and it would be best to avoid Friday, as prices are on average 68.91% higher than on Tuesday. (Average prices, based on 480 datapoints.)
At Athens the most flights depart around 13:00. (Hourly flights, based on 253 datapoints.)
From Athens it is on average the cheapest to fly to Rome and to Istanbul. (Average prices, based on 282 datapoints.)
From Athens most of the flights depart to Heraklion, second best connected from Athens is Milan. (Daily flights, based on 58 datapoints.)