Please be aware that Brussels has multiple airports and that these results are for all airports serving the city.
The best month to fly between Brussels and Alicante is October and the most expensive month to fly is January. (Average prices, based on 392 datapoints.)
The best day to arrive at Brussels is Saturday and it would be best to avoid Sunday, as prices are on average 32.47% higher than on Saturday. (Average prices, based on 392 datapoints.)
The cheapest airline flying from Brussels to Alicante is Ryanair. They are 60% cheaper than Brussels Airlines. (Average prices, based on 399 datapoints.)