From Orly Sud train to Antony Ratp, RER to Gare du Nord, line 5 Metro to Paris Est, train to Luxembourg Gare Centrale, then line 9 bus to Hamilius. 3hrs 02min 286 €. From Paris Orly drive to Luxembourg. 3hrs 48min 54 €. From Orly Sud bus to Paris CDG airport, fly to Luxembourg airport, then line 9 bus to Luxembourg. 3hrs 18min 167 €. From Paris Orly airport fly to Luxembourg airport then line 9 bus to Luxembourg. 5hrs 23min 88 €.