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 month to arrive at Sydney is March and the most expensive month to fly is January. (Average prices, based on 213 datapoints.)
The best day to arrive at Sydney is Wednesday and it would be best to avoid Monday, as prices are on average 100.76% higher than on Wednesday. (Average prices, based on 804597 datapoints.)
We have a lot more statistics for flights QF 81 and between Sydney and Singapore.
