Flight Amsterdam Airport Schiphol departs from Amsterdam Amsterdam Airport Schiphol at 20:50 and arrives at Singapore Changi Airport at 15:30.
The flighttime is about 12h 40m. The distance travelled ("as the bird flies"): 10461 Km. So the average speed is roughly 826 Km.
There is an 6 hour time difference between Amsterdam and Singapore
The best day to arrive at Amsterdam is Thursday and it would be best to avoid Monday, as prices are on average 594.96% higher than on Thursday. (Average prices, based on 442726 datapoints.)
We have a lot more statistics for flights QF 4234 and between Amsterdam and Singapore.