Flight Changi Airport departs from Singapore Changi Airport at 00:45 and arrives at Sydney Sydney Airport at 11:25.
The flighttime is about 8h 40m. The distance travelled ("as the bird flies"): 5577 Km. So the average speed is roughly 644 Km.
There is an 2 hour time difference between Singapore and Sydney
The best month to arrive at Singapore is November and the most expensive month to fly is February. (Average prices, based on 1088 datapoints.)
The best day to arrive at Singapore is Tuesday and it would be best to avoid Sunday, as prices are on average 82.24% higher than on Tuesday. (Average prices, based on 394852 datapoints.)
We have a lot more statistics for flights SQ 231 and between Singapore and Sydney.