Please be aware that Istanbul has multiple airports and that these results are for all airports serving the city.
The best month to arrive at Istanbul is November and the most expensive month to fly is August. (Average prices, based on 3831 datapoints.)
The best day to arrive at Istanbul is Monday and it would be best to avoid Friday, as prices are on average 37.25% higher than on Monday. (Average prices, based on 3061 datapoints.)
The cheapest airline flying to Istanbul is Pegasus Airlines. They are 67% cheaper than Egyptair. (Average prices, based on 4188 datapoints.)
At Istanbul the most flights depart around 10:00. (Hourly flights, based on 4609 datapoints.)
From Istanbul it is on average the cheapest to fly to Izmir and to Antalya. (Average prices, based on 523 datapoints.)
From Istanbul most of the flights depart to Izmir, second best connected from Istanbul is Antalya. (Daily flights, based on 189 datapoints.)