The best month to fly between Jeddah and Istanbul is October and the most expensive month to fly is June. (Average prices, based on 1290 datapoints.)
The best day to arrive at Jeddah is Thursday and it would be best to avoid Sunday, as prices are on average 51.76% higher than on Thursday. (Average prices, based on 1286 datapoints.)
The best time to fly is at around 5. (Average prices, based on 1601 datapoints.)