Flight Amsterdam Airport Schiphol departs from Amsterdam Amsterdam Airport Schiphol at 12:15 and arrives at Prague Václav Havel Airport Prague at 13:40.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 1083 Km. So the average speed is roughly 764 Km.
The best day to arrive at Amsterdam is Saturday and it would be best to avoid Monday, as prices are on average 103.97% higher than on Saturday. (Average prices, based on 120100 datapoints.)
We have a lot more statistics for flights KL 1355 and between Amsterdam and Prague.