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 July. (Average prices, based on 378 datapoints.)
The best day to arrive at Brussels is Tuesday and it would be best to avoid Friday, as prices are on average 37.46% higher than on Tuesday. (Average prices, based on 1326 datapoints.)
The cheapest airline flying to Brussels is Ryanair. They are 80% cheaper than Swiss Int Air Lines. (Average prices, based on 400 datapoints.)
At Brussels the most flights depart around 08:00. (Hourly flights, based on 464 datapoints.)
From Brussels it is on average the cheapest to fly to London and to Rome. (Average prices, based on 351 datapoints.)