Flight Changi Airport departs from Singapore Changi Airport at 01:25 and arrives at Cebu Mactan-Cebu International Airport at 05:15.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 2254 Km. So the average speed is roughly 588 Km.
The best day to arrive at Singapore is Saturday and it would be best to avoid Monday, as prices are on average 184.05% higher than on Saturday. (Average prices, based on 184492 datapoints.)
We have a lot more statistics for flights 5J 548 and between Singapore and Cebu.
