Konstanz can easily be
reached by train from Zurich. The railway station is located
in the basement of the airport. A return ticket Zurich-Airport/Konstanz
costs 43.00 SFR, a one way ticket 25.00 SFR.
From Stuttgart airport you have to take the Underground (German: S-Bahn) to the main train station, Stuttgart Hauptbahnhof, and then the train to Konstanz. You have to change once, the journey takes about two and a half hours.
Going by train to Konstanz from Frankfurt airport takes about four hours. To reach the main station you have to take the S-Bahn. There is a direct train from Frankfurt Hauptbahnhof every two hours.
The journey from Munich airport to Konstanz takes at least four hours. You have to change at least once, usually twice or thrice.
From Friedrichshafen airport one needs
to travel by bus to Meersburg/Fähre (ferry), and then cross
the lake by ferry. At the Konstanz ferry station, you can reach the
university by bus (no. 1, then change to no. 9).
From Zurich:
Take the motorway N7 to
Kreuzlingen/Konstanz, where you cross the border to Germany. You drive around the city (you can't go wrong, there is
only one road). After crossing the bridge over the Rhine, you have to follow
the signs Universität.
There are two big parking lots (fee: 2.50 DM a day, Sunday), lot Süd
and lot Nord (follow the signs). From there you walk about 150m to the main
entrance of the university (Section A).