Access by road: please use a common route planner (Google Maps, Map24,...).
Coming from the city: Take the subway from the station "Hauptbahnhof", "Stadtmitte" or "Feuersee" S1 (Herrenberg), S2 or S3 (both Flughafen) and get off at "Universität".
Coming from the airport:The train stop is located directly beneath the airport. Just follow the signs marked "S". Take the subway S2 (Schorndorf) or S3 (Backnang) and get off at "Universität". Buy a ticket for two zones at one of the orange colored vending machines.
Alternatively you can take the following bus lines: 82, 84, 91, 92, 746, 747 and 748. Get of at the stop "Universität".