Flight Sydney Airport departs from Sydney Sydney Airport at 11:45 and arrives at Adelaide Adelaide Airport at 13:25.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 1408 Km. So the average speed is roughly 650 Km.
There is an 0.5 hour time difference between Sydney and Adelaide
The best day to arrive at Sydney is Sunday and it would be best to avoid Thursday, as prices are on average 48.82% higher than on Sunday. (Average prices, based on 4217388 datapoints.)
We have a lot more statistics for flights ZL 817 and between Sydney and Adelaide.
THB