Flight Perth Airport departs from Perth Perth Airport at 17:10 and arrives at Singapore Changi Airport at 22:35.
The flighttime is about 5h 25m. The distance travelled ("as the bird flies"): 1789 Km. So the average speed is roughly 330 Km.
The best day to arrive at Perth is Tuesday and it would be best to avoid Saturday, as prices are on average 178.78% higher than on Tuesday. (Average prices, based on 266081 datapoints.)
We have a lot more statistics for flights VA 5514 and between Perth and Singapore.