Belgian Railways (NMBS/SNCB) operates a train from Brussels to Bree hourly. Tickets cost $12 - $18 and the journey takes 1 h 30 min. De Lijn also services this route hourly. Alternatively, De Lijn operates a bus from Brussels to Bree once a week. Tickets cost $4 and the journey takes 1 h 43 min. De Lijn also services this route hourly.
How to get from Brussels to Bree
From Bruxelles-Nord train to Genk Station perron 6 then line 8 bus to Bree Busstation Perron 8. 2 h 36 min 15€. From Sint-Pieters-Woluwe Montgomery bus to Maaseik Van Eycklaan then line 302 bus to Bree Opitterpoort. 2 h 38 min 6€. From Brussels drive to Bree. 1 h 14 min 14€.