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 October and the most expensive month to fly is July. (Average prices, based on 356 datapoints.)
The best day to arrive at Brussels is Thursday and it would be best to avoid Sunday, as prices are on average 26.46% higher than on Thursday. (Average prices, based on 1506 datapoints.)
The cheapest airline flying to Brussels is Ryanair. They are 80% cheaper than Lufthansa. (Average prices, based on 441 datapoints.)
At Brussels the most flights depart around 19:00. (Hourly flights, based on 789 datapoints.)
From Brussels it is on average the cheapest to fly to Amsterdam and to Barcelona. (Average prices, based on 396 datapoints.)
From Brussels most of the flights depart to Geneva, second best connected from Brussels is Malaga. (Daily flights, based on 143 datapoints.)