Flight Changi Airport departs from Singapore Changi Airport at 18:40 and arrives at Manila Ninoy Aquino International Airport at 22:50.
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 month to arrive at Singapore is January and the most expensive month to fly is December. (Average prices, based on 16759 datapoints.)
We have a lot more statistics for flights 5J 806 and between Singapore and Manila.