The bus station is located on level 0 - one floor down from the arrivals hall at the airport. Centrally located on the bus station there are three platforms each with its specific use. All MIVB/STIB buses depart from platform C.
Before boarding the bus you can purchase a ticket at one of the GO ticket machines located on platform C of the bus station or inside the airport
Brussels Airport - Brussels City
The Airport Line lifts off with flight number 12 and halts at the most important stops.