Aeroplane: Vienna Airport provides connections from most countries in Europe and outside Europe. Many airlines transport daily a lot of tourists from all around the world to the Austrian capital. Among the cheapest companies traveling to Vienna are, for example, Easy Jet and Vueling but also others such as British Airways or Lufthansa have Vienna as a destination. Another way to travel is by the Irish airline Ryanair, to Bratislava (Slovakia), and from there taking a train that will take you in just an hour directly to Vienna. For more information visit http://www.viennaairport.com flights
To get from the airport to the center of Vienna an easier, convenient and fast option is to go by taxi. It has a rate between 25 € and 30 € or a little more.
Another comfortable option could be using the train, namely the City Airport Train Cat that will take you to the center for 11 €. More information: http://www.cityairporttrain.com
You will pay much less for transportation traveling by bus, 8 € for travel to the city center. http://www.postbus.at/en/Airportbus/Vienna_AirportLines/index.jsp
Schnellbahn Wien - S7 is another possibility you have to get to the downtown. 4.40 €.