Please be aware that Istanbul has multiple airports and that these results are only for Sabiha Gökcen International Airport.
The best month to arrive at Istanbul is May and the most expensive month to fly is July. (Average prices, based on 1917 datapoints.)
The best day to arrive at Istanbul is Saturday and it would be best to avoid Friday, as prices are on average 27.68% higher than on Saturday. (Average prices, based on 1961 datapoints.)
The cheapest airline flying to Istanbul is Pegasus Airlines. They are 80% cheaper than Turkish Airlines. (Average prices, based on 1994 datapoints.)
At Istanbul the most flights depart around 10:00. (Hourly flights, based on 2168 datapoints.)
From Istanbul it is on average the cheapest to fly to Antalya and to Cologne. (Average prices, based on 206 datapoints.)
From Istanbul most of the flights depart to Antalya, second best connected from Istanbul is Dusseldorf. (Daily flights, based on 106 datapoints.)