The best month to fly between Amsterdam and New York is September and the most expensive month to fly is February. (Average prices, based on 490 datapoints.)
The best day to arrive at Amsterdam is Monday and it would be best to avoid Thursday, as prices are on average 34.33% higher than on Monday. (Average prices, based on 693 datapoints.)
The best time to fly is at around 13. (Average prices, based on 695 datapoints.)