TRAIN CONNECTIONS FROM BRUSSELS NATIONAL AIRPORT TO LEUVEN:

Every hour:

Airport     .09   .24   .43
BruNo    a  .25   .41   .58
         ==================
BruNo    d  .29   .57
Leuven      .47   .17

BruNo = Brussel-Noord/Bruxelles Nord
.29 are trains to Hasselt-Genk and Liege-Maastricht (normally platform 6)
.57 are trains to Koeln or Eupen (normally platform 5)
Leuven is the first stop after Brussels.
These trains run daily between 6.09 and 23.24 (the last train which enables you to get in Leuven as well. There are later trains towards Brussels!).

Another possibility:

Every hour:

Airport     .24
Zaventem    .28
           ====
Zaventem    .47
Leuven      .08

TRAIN CONNECTIONS FROM LEUVEN TO BRUSSELS NATIONAL AIRPORT:

Every hour:

from Leuven   .26   .57  
BruNo      a  .47   .17
           ==================
BruNo      d  .02   .18   .45
Airport       .18   .33   .58

Normally platform 1 in Leuven
These trains run daily between 6.26 and 22.34

Another possibility:

Every hour:

Leuven      .34
Zaventem    .56
         ======
Zaventem    .14
Airport     .18

This file is maintained by ineke.schuurman@ccl.kuleuven.ac.be