From the Roissy Charles-de-Gaulle airport: direct connection by shuttle (about 30mins)
From the Orly airport: direct connection with the “Invalides” station by bus, then RER line C
Inner loop of the Paris’ ring road (Périphérique intérieur): “Porte Maillot” Exit
Outer loop of the Paris’ ring road (Périphérique intérieur): “Place des Ternes” Exit
An underground parking is at your disposal just underneath the Palais des Congrès. It costs 2,9 € per hour up to 3 hours and 28 € for the whole day (source: Vinci Park).
You can access the Palais des Congrès by the lines 43, 73, 82, 244, PC1, PC2 and PC3.