Flight King Abdulaziz International Airport departs from Jeddah King Abdulaziz International Airport at 19:20 and arrives at Istanbul Istanbul Atatürk Airport at 23:30.
The flighttime is about 4h 10m. The distance travelled ("as the bird flies"): 2111 Km. So the average speed is roughly 507 Km.
The best day to arrive at Jeddah is Monday and it would be best to avoid Thursday, as prices are on average 91.4% higher than on Monday. (Average prices, based on 1937932 datapoints.)
We have a lot more statistics for flights TK 127 and between Jeddah and Istanbul.