Flight Ninoy Aquino International Airport departs from Manila Ninoy Aquino International Airport at 19:35 and arrives at Singapore Changi Airport at 23:20.
The flighttime is about 3h 45m. The distance travelled ("as the bird flies"): 1963 Km. So the average speed is roughly 523 Km.
The best month to arrive at Manila is July and the most expensive month to fly is January. (Average prices, based on 38900 datapoints.)
We have a lot more statistics for flights GA 509 and between Manila and Singapore.