The best month to fly between Amsterdam and Brussels is February and the most expensive month to fly is September. (Average prices, based on 1493 datapoints.)
The best day to arrive at Amsterdam is Thursday and it would be best to avoid Sunday, as prices are on average 41.22% higher than on Thursday. (Average prices, based on 1601 datapoints.)
The best time to fly is at around 13. (Average prices, based on 1549 datapoints.)