Flight Changi Airport departs from Singapore Changi Airport at 11:15 and arrives at Denpasar Bali Ngurah Rai International Airport at 14:15.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 1294 Km. So the average speed is roughly 431 Km.
The best day to arrive at Singapore is Wednesday and it would be best to avoid Saturday, as prices are on average 327.42% higher than on Wednesday. (Average prices, based on 21554476 datapoints.)
We have a lot more statistics for flights QF 843 and between Singapore and Denpasar Bali.