Flight Perth Airport departs from Perth Perth Airport at 21:35 and arrives at Singapore Changi Airport at 03:15.
The flighttime is about 5h 40m. The distance travelled ("as the bird flies"): 1789 Km. So the average speed is roughly 316 Km.
The best day to arrive at Perth is Monday and it would be best to avoid Saturday, as prices are on average 467.32% higher than on Monday. (Average prices, based on 267681 datapoints.)
We have a lot more statistics for flights TR 17 and between Perth and Singapore.