Flight Changi Airport departs from Singapore Changi Airport at 10:35 and arrives at Manila Ninoy Aquino International Airport at 14:45.
The flighttime is about 4h 10m. The distance travelled ("as the bird flies"): 1963 Km. So the average speed is roughly 471 Km.
The best day to arrive at Singapore is Saturday and it would be best to avoid Sunday, as prices are on average 66.17% higher than on Saturday. (Average prices, based on 8738570 datapoints.)
We have a lot more statistics for flights 5J 814 and between Singapore and Manila.