Flight Ninoy Aquino International Airport departs from Manila Ninoy Aquino International Airport at 19:30 and arrives at Singapore Changi Airport at 23:15.
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 day to arrive at Manila is Wednesday and it would be best to avoid Thursday, as prices are on average 44.19% higher than on Wednesday. (Average prices, based on 21430564 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 102 datapoints.)
We have a lot more statistics for flights PR 509 and between Manila and Singapore.