Flight Changi Airport departs from Singapore Changi Airport at 15:40 and arrives at Denpasar Bali Ngurah Rai International Airport at 18:35.
The flighttime is about 2h 55m. The distance travelled ("as the bird flies"): 1294 Km. So the average speed is roughly 444 Km.
The best day to arrive at Singapore is Monday and it would be best to avoid Friday, as prices are on average 296.88% higher than on Monday. (Average prices, based on 20852223 datapoints.)
We have a lot more statistics for flights QF 5147 and between Singapore and Denpasar Bali.