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 June. (Average prices, based on 294 datapoints.)
The best day to arrive at Brussels is Thursday and it would be best to avoid Sunday, as prices are on average 33.62% higher than on Thursday. (Average prices, based on 413 datapoints.)
The cheapest airline flying from Brussels to Alicante is Vueling. They are 52% cheaper than Jetairfly. (Average prices, based on 298 datapoints.)
The best time to fly is at around 11. (Average prices, based on 594 datapoints.)