From the International Airport of Brussels (at Zaventem), there are two direct train connections to Leuven every hour. Leuven is about 15 min. from Brussels international Airport by train, and costs about 14 Euro.
From the airport, you can also take a taxi straight to Leuven. This takes approximately 25 min., and costs about 90 Euro.
Leuven is easy to reach by train from all Belgian and European cities. The station is close to the town centre.
Leuven can also be reached easily by highway. Take the Leuven exit on the highway Brussels-Luik/Liège (E40) or the Leuven exit 15 on the E314 (from Aachen-Lummen-Brussels). The ‘P' signposts will guide you to the different car parks.