Flight Changi Airport departs from Singapore Changi Airport at 21:05 and arrives at Denpasar Bali Ngurah Rai International Airport at 23:50.
The flighttime is about 2h 45m. The distance travelled ("as the bird flies"): 1294 Km. So the average speed is roughly 471 Km.
The best day to arrive at Singapore is Sunday and it would be best to avoid Friday, as prices are on average 69.07% higher than on Sunday. (Average prices, based on 21465153 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 518 datapoints.)
We have a lot more statistics for flights QZ 509 and between Singapore and Denpasar Bali.