Zurich Airport (IATA: ZRH) is in the swiss canton of Zurich, and is also known as Kloten Airport. It is the largest international flight gateway to Switzerland, and is the hub for flag-carrier Swiss International Airlines. It handles over 20 million passengers annually, and is well connected by train to many parts of Switzerland. A new terminal was recently completed, with an automated underground train linking old and new. During the train ride, passengers are treated to the sounds of the Swiss Alps.
Here are some of the major Airlines that service Zurich Airport:
The above mentioned information is taken from: http://en.wikipedia.org/wiki/Zurich_Airport.