Flight King Abdulaziz International Airport departs from Jeddah King Abdulaziz International Airport at 23:25 and arrives at Istanbul Istanbul Atatürk Airport at 03:30.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 2111 Km. So the average speed is roughly 517 Km.
The best day to arrive at Jeddah is Monday and it would be best to avoid Friday, as prices are on average 62.87% higher than on Monday. (Average prices, based on 1292009 datapoints.)
We have a lot more statistics for flights TK 129 and between Jeddah and Istanbul.