Flight Sydney Airport departs from Sydney Sydney Airport at 10:20 and arrives at Singapore Changi Airport at 16:55.
The flighttime is about 8h 35m. The distance travelled ("as the bird flies"): 5577 Km. So the average speed is roughly 650 Km.
There is an 2 hour time difference between Sydney and Singapore
The best day to arrive at Sydney is Thursday and it would be best to avoid Monday, as prices are on average 97.21% higher than on Thursday. (Average prices, based on 758513 datapoints.)
We have a lot more statistics for flights UL 3371 and between Sydney and Singapore.