The Brussels National Airport railway station is located under the airport building at level -1. The train station has direct services to Brussels, De Panne, Ghent, Hasselt, Landen, Leuven, Nivelles and Quévy. The most used link to Brussels has at least 3 trains per hour.
A direct train link with Leuven was opened on 12 December 2005. A direct link with Antwerp and Mechelen via the so-called Diabolo line is scheduled to be completed in 2012. The Diabolo project is a public private partnership. It has been decided that all rail passengers to the Brussels National Airport railway station station pay a "Diabolo supplement" to finance the ongoing and planned work.