By train, it will take 8 hrs 20 minutes.
about 4 hours probaly 5
For a train journey from Milan to Zurich it would take approximately four hours to get one way.
About 4h30. There are 5-6 trains per day.
Take a train from St Moritz to Chur. At Chur change for a train to Zurich. At Zurich Hauptbahnhof take a train to the Paris Gare de l'Est.
Better to take the train. 10-15 minutes by train.
About 10-15 minutes by train from Zürich Hauptbahnhof (Main station) to Zürich Flughafen (airport). A lot longer by car.
You can't sail from London to Cologne.
Many hundreds of Franks. Better to take the train.
From Vienna (Austria) to Zurich HB (Switzerland) can take from 9 to 12 hours... it's mainly crossing whole Austria from east to west just over the Swiss border. It seems that the most direct train connection takes 9h02min from Vienna to Zurich without changing. In Zurich you take any direct train (called "inter-cities") to Berne, where you change for Geneva... or you take any direct train from Zurich to Geneva, but they all pass Berne... so it's not really worthy to wait for a direct train (it doesn't last longer, you simply have to change at Berne). Zurich-Berne takes 58min and Berne-Geneva about 1h45min. That's quite exactly a journey that takes 12 hours (including waiting).
total 20 minutes by (train + walk) a lot of money and traffic jam by taxi
Zurich-Otopeni, direct flight, with Flybaboo: 2 h 15 min.