Flight Ninoy Aquino International Airport departs from Manila Ninoy Aquino International Airport at 05:45 and arrives at Singapore Changi Airport at 09:40.
The flighttime is about 3h 55m. The distance travelled ("as the bird flies"): 1963 Km. So the average speed is roughly 501 Km.
The best day to arrive at Manila is Wednesday and it would be best to avoid Monday, as prices are on average 39.08% higher than on Wednesday. (Average prices, based on 21430124 datapoints.)
We have a lot more statistics for flights PR 511 and between Manila and Singapore.