Flight Sydney Airport departs from Sydney Sydney Airport at 18:05 and arrives at Singapore Changi Airport at 00:20.
The flighttime is about 8h 15m. The distance travelled ("as the bird flies"): 5577 Km. So the average speed is roughly 676 Km.
There is an 2 hour time difference between Sydney and Singapore
The best day to arrive at Sydney is Wednesday and it would be best to avoid Monday, as prices are on average 175.71% higher than on Wednesday. (Average prices, based on 341136 datapoints.)
We have a lot more statistics for flights SQ 242 and between Sydney and Singapore.