How to get there

From Paris-Orly airport to Paris-Gare du Nord (< 1h30)

• Take the subway "Orlyval'', get off at Antony. Then take the metro RER - Line B to Gare du Nord or

• Take a bus "Orlybus'' to Paris. Get off at "Denfert-Rochereau'' in Paris. Then take the metro RER - Line B to Gare du Nord.
  
  
  

From Roissy-Charles de Gaulle airport to Paris-Gare du Nord (<45mn)

Take the metro RER - Line B to Gare du Nord.

From Paris-Gare du Nord to Lille (1h)

Take a train Paris-Lille. There are two stations in Lille (Gare Lille-Flandres and Gare Lille-Europe) which both are convenient. Be sure to take a TGV train (Très Grande Vitesse): they will take you to Lille in one hour (rather than two and a half in a slow train). TGVs run every hour or so. The fare ranges from 40 to 55 €.

From Roissy-Charles de Gaulle airport directly to Lille (50mn)

There is a TGV line going directly from Roissy airport to Lille but there are much fewer trains than from Paris-Gare du Nord.

From Brussels to Lille (<1h30)

There are regular commuter trains from the airport to the central railway station. Then take a TGV to Lille.

From Lille-Lesquin airport to Lille downtown (<5mn)

There are regular shuttles to the center of Lille.

From Lille downtown to the university in Villeneuve d'Ascq (<30mn)

Take the undeground "Ligne 1 direction 4 Cantons'' and get off at ''Cité Scientifique''. There is then a 5mn walk from the station Cité Scientifique to the department of Mathematics (Bâtiment M2). Metros operate every day from 5:00 AM to 12:00 PM. They run every 3 or 4 mn.