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 74% cheaper than Brussels Airlines. (Average prices, based on 428 datapoints.)
At Brussels the most flights depart around 18:00. (Hourly flights, based on 638 datapoints.)
From Brussels it is on average the cheapest to fly to Barcelona and to Madrid. (Average prices, based on 215 datapoints.)
From Brussels most of the flights depart to Frankfurt, second best connected from Brussels is Istanbul. (Daily flights, based on 76 datapoints.)