Please be aware that Berlin has multiple airports and that these results are for all airports serving the city.
At Berlin the most flights depart around 09:00. (Hourly flights, based on 276 datapoints.)
From Berlin it is on average the cheapest to fly to Istanbul and to Antalya. (Average prices, based on 94 datapoints.)
From Berlin most of the flights depart to Antalya, second best connected from Berlin is Amsterdam. (Daily flights, based on 102 datapoints.)