Public transportation options at Vienna International Airport:  On the first level of the Terminal complex (Arrivals), as well as from Carpark 4, you can access the S-Bahn (Rapid Rail) & the CAT train by a covered walkway  (the present underground railway station will be expanded to connect to Bratislava, Slovakia). The CAT bus stop is on the opposite side and guarantees you a seat if you reserve ahead.
(Note that the train station is located on level 1 for both OBB & CAT trains. This level also leads to parking lot and garage. Level 0 is for bus & limo service (with inside Lost & found, baggage storage, lost baggage, and baggage claim.)

1. The S-Bahn to Vienna's city center
runs every half hour,  takes 25 mins. Tickets machines are on the train platforms.
2. The City Airport Train (CAT) runs non-stop to the City Air Terminal, which is only a 16-minute ride from St. Stephan's Cathedral, accessible by tram, subway, bus or taxi.   A CAT counter for tickets is on the ground level, at left.
3. Vienna Airport Lines connects Airport West with the main Vienna transport hubs. 
4. Regional buses run to Vienna Donauzentrum (Danube-center via Vienna Kaisermuhlen VIC) taking 40 mins; and to Westbahnhof (train station West) via Vienna-Dorfelstrasse & Meidling train station taking 45 mins.

Long-distance IC trains: 
The Airport railway station has been extended to serve IC long-distance trains - enabling passengers to reach the Airport 'from anywhere'.  Every two hours 15 IC trains arrive /depart from Vienna Airport.  Getting from St. Polten to the Airport takes 50 mins; from Linz only 50 mins.  By late 2015 the IC trains are to arrive/ depart twice an hour.

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