Take the A1 or A3 motorway, then take the A104 (towards Soissons). Follow signs for Parc des Expositions (if there is traffic on the A1, take the Le Bourget exit and get to the Parc via the N2, N370 and CD40).
FROM PARIS BERCY, ORLY, A6
Take the A4, then the A86 and A3 motorways (if there is traffic at the A6 junction, carry on up to the A104). Take the Parc des Expositions exit.
FROM ROISSY AND LILLE
Take A104 towards Lille / Aéroport Charles de Gaulle, as far as the Parc des Expositions exit.