From the airport: Take the CAT (City Airport Train) or a commuter train (S-Bahn) to Wien-Mitte/Landstraße. Take the U4 underground line in the direction of Hütteldorf and get off at Karlsplatz. Take the exit “Oper/Opernring”. Pick-up from the airport is available on request and at an extra cost. From the Western Train Station (Westbahnhof): Take the U3 in the direction of Simmering and get off at Stephansplatz. Take the U1 in the direction of Reumannplatz and get off at Karlsplatz. Take the exit “Oper/Opernring”. From the Southern Train Station (Südbahnhof): Take the tram line D and get off at Kärntnerring/Oper.