Flight Changi Airport departs from Singapore Changi Airport at 08:20 and arrives at Denpasar Bali Ngurah Rai International Airport at 11:00.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 1294 Km. So the average speed is roughly 485 Km.
The best month to arrive at Singapore is March and the most expensive month to fly is May. (Average prices, based on 9639 datapoints.)
We have a lot more statistics for flights NH 940 and between Singapore and Denpasar Bali.