Antwerp Forum: Travel to tomorrowland

You seem to be asking about flights to Belgium rather than how to get to Tomorrowland festival itself, which is exhaustively covered in another question.

Normally the cheapest flights to Belgium from Dublin, if you book far enough ahead, would be with Ryanair to Charleroi (CRL). You would then take a local bus (A or 68) to Charleroi-Sud railway station, and then a direct train to Antwerp, which takes 1h35. Trains depart Charleroi-Sud at 08 and 37 mins past the hour (on weekdays), last direct train is at 22:08. Cost is €16.70 for bus plus train, you can buy combi ticket from machines at CRL; however I think prices go up tomorrow!

You can fly to Antwerp itself from London City Airport, but this is unlikely to be cheap. You could also look into flights to airports near Belgium, like Amsterdam or Cologne, from which you can get to Antwerp by train.

The only cheap alternative, if you have the time, would be Eurolines coach via London and Dover/Eurotunnel, see www.eurolines.com.