Air Berlin flies to Preveza airport (PVK) from Stuttgart, Munich and Düsseldorf; it is usually easiest to drive or get a train to Stuttgart or Munich but it is possible to get a connecting flight from Zurich to Düsseldorf. Swiss flies to Athens, from where you can get a bus to Levkas (5.5 hours) or hire a car.
Other options are to drive to Ancona in Italy and get the overnight ferry across to Igoumenitsa (Superfast/Anek or Minoan lines). This is our personal preferred option.
Or take the train to Ancona then a transfer from Igoumenitsa to us. If you would like more info on this please contact us.