Please be aware that Brussels has multiple airports and that these results are only for Brussels Airport.
The best month to arrive at Brussels is December and the most expensive month to fly is April. (Average prices, based on 1258 datapoints.)
The best day to arrive at Brussels is Tuesday and it would be best to avoid Friday, as prices are on average 79.83% higher than on Tuesday. (Average prices, based on 343 datapoints.)
The cheapest airline flying to Brussels is Aer Lingus. They are 88% cheaper than Swiss Int Air Lines. (Average prices, based on 1300 datapoints.)
At Brussels the most flights depart around 01:00. (Hourly flights, based on 1310 datapoints.)
From Brussels it is on average the cheapest to fly to Barcelona and to Istanbul. (Average prices, based on 158 datapoints.)