– With a taxi. You will find  the taxi stand at the exit at the airport.
Rate: Between €40 to €60.

– Orly bus and Metro :
Bus from the airport to Denfert-Rochereau. (Rate: 7.70 €).
Line 6 from Denfert-Rochereau to la Motte-Picquet Grenelle, direction Charles de Gaulle Étoile.
Line 8 from la Motte-Picquet Grenelle to École Militaire, direction Créteil Pointe du Lac.