Vienna International Airport is located 13 kilometres south east of Vienna.
www.viennaairport.at

City Airport Train (CAT)
The train service between the airport and the city centre (City Air Terminal – Station “Wien Mitte”) is every 30 minutes and takes 16 minutes. It is covered from 6:05 hrs to 00:05 hrs (Airport to City) and from 5:38 hrs to 23:38 hrs (City to Airport). Tickets may be purchased online (EUR 11.00 single or EUR 17.00 return), from ticket machines at the airport/station (EUR 12.00 single or EUR 19.00 return) or on board (EUR 10.00 single).
From “Wien Mitte” take the orange-colored underground-line U3 (direction Ottakring) and change at Stephansplatz (two stops) to the red colored underground-line U1 (direction Leopoldau). Alight at Vienna International Centre/Kaisermühlen and take the exit marked Schüttaustraße.
www.cityairporttrain.com 

Alternatively, there are several bus services to the center (Schwedenplatz) and close by (Erdberg), as well as to the conference venue (Austria Center Vienna / ACV) which takes around 30 minutes and costs – depending on the provider you choose – between EUR 5.00 to EUR 8.00 (single) or EUR 10.00 to EUR 13.00 (return).
www.viennaairportlines.at 
www.flixbus.at

Taxi fares to the conference venue take around 25 minutes. There is a taxi rank outside the airport terminal. These fares will cost around € 45.00. Night-time fees are slightly higher.
www.flughafentaxi-wien.at/en/
If you wish to book fare in advance, which in most cases will be the more economic option, you can do so here:
Airporttaxis