Please be aware that Brussels has multiple airports and that these results are for all airports serving the city.
The best month to arrive at Brussels is February and the most expensive month to fly is April. (Average prices, based on 1201 datapoints.)
The best day to arrive at Brussels is Thursday and it would be best to avoid Friday, as prices are on average 17.25% higher than on Thursday. (Average prices, based on 1234 datapoints.)
The cheapest airline flying to Brussels is Aer Lingus. They are 72% cheaper than SAS Scandinavian Airlines. (Average prices, based on 1292 datapoints.)
At Brussels the most flights depart around 17:00. (Hourly flights, based on 1465 datapoints.)
From Brussels it is on average the cheapest to fly to Barcelona and to Madrid. (Average prices, based on 628 datapoints.)
From Brussels most of the flights depart to Frankfurt, second best connected from Brussels is Lisbon. (Daily flights, based on 78 datapoints.)