Toulouse can be reached by:

>> direct high-speed train from Paris, in approximately 4 hours

then you can join the university from Toulouse Matabiau railway station, by the underground in 30 min:

> from Marengo-SNCF Toulouse station, take the underground line A towards Basso Cambo, and stop at "Jean Jaurès" station;
> then take the underground line B towards Ramonville, and stop at "Université Paul Sabatier" station.

 

Or

>> plane from Paris, in approximately 1 hour

then you can join the university from Toulouse Blagnac airport by shuttle bus then underground in 45 min:

> take the airport shuttle (Aéro line) to Toulouse bus station, and stop at "Compans-Caffarelli" station;
> then take the underground line B towards Ramonville, and stop at "Université Paul Sabatier" station.

 

To find out more about the transport network in Toulouse, visit the website of Tisséo company.