You can reach Vienna International Airport (Flughafen Wien-Schwechat) from Landstrasse by taking the City Airport Train (CAT) or the Vienna S-Bahn (suburban train). Both options provide a quick and convenient connection between Landstrasse and the airport. The CAT offers a non-stop service, while the S-Bahn provides regular departures. Additionally, taxis and airport shuttles are available for transportation to the airport from Landstrasse.