Please be aware that Milan has multiple airports and that these results are for all airports serving the city.
The best month to fly between Milan and Amsterdam is February and the most expensive month to fly is November. (Average prices, based on 300 datapoints.)
The best day to arrive at Milan is Tuesday and it would be best to avoid Monday, as prices are on average 81.98% higher than on Tuesday. (Average prices, based on 312 datapoints.)