Check the Belval Campus map – as is currently available on google maps – for route information.
Outdoor parking areas and underground car parks are available throughout the campus, particularly P+R Belval Université (in French).

The following bus lines (in French) are servicing several stops on Belval Campus:

 – TICE Ligne 1: Esch – Belvaux – Lamadeleine;
 – TICE Ligne 2: Esch – Soleuvre – Differdange;
 – TICE Ligne 3: Esch – Belval – Bascharage – Niederedingen;
 – TICE Ligne 4: Belval – Esch – Schifflange – Kayl – Dudelange;
 – TICE Ligne 7: Belval – Esch – Lallange – ZARE;
 – TICE Ligne 15: Esch – Belval – Bascharage – Clemency;
 – RGTR Ligne 202: Luxembourg – Belvaux – Obercorn;
 – RGTR Ligne 203: Luxembourg – Soleuvre – Differdange;
 – RGTR Ligne 321: Luxembourg – Esch/Alzette – Villerupt (F);
 – RGTR Ligne 322: Esch – Rédange (F);
 – RGTR Ligne 332: Steinfort – Belval;
 – RGTR Ligne transfrontalière 306: Trier (D) – Cloche d’Or – Belval;
 – RGTR Ligne transfrontalière 309: Perl (D) – Frisange – Belval;

And the bus line Metz-Belval Universités (in French).

Train Stop: “Belval-Université” 

Trains departing every 15 minutes from Luxembourg Central Station are direct to “Belval-Université” – line is connection-free via Esch-sur-Alzette. Get information on train schedules on the CFL’s website.

When on site, access to buildings is easy on foot.

A bicycle path runs south of Belval Campus and many pedestrian areas have been developed between main streets. Bicycle parking facilities area available across campus. Bicycle shelters are available at the “Belval-Université” train station.

Bus 29 to the central station, then by train (Pétange direction) until Belval université train stop.
Here is additional information on gentle mobility on Belval Campus (PDF) and on gentle mobility in Luxembourg.