By Plane
Zurich Airport (ZRH) is the main international airport in Switzerland. It is easily reachable, with direct flights from many European airports and major intercontinental hubs. It is the main hub of Swiss International Airlines. A list of airlines flying to Zurich is available.
The airport is located approximately 10 km north of downtown Zurich. The airport is fully integrated into Zurich's public transportation network by regular train and tram service. Regular trains connect the airport's train station (Zürich Flughafen) to Zurich main train station (Zürich HB). The airport's train station is under the airport; follow the signs to Railway/SBB to get to the underground platforms. Journey time is from 10 to 14 minutes, and a one-way ticket, valid for one hour costs CHF 6.80 which can be used on all trains, trams and buses. More information one how to get to Zurich downtown can be found here.
Taxi service from the airport to downtown is also available (cost approximately CHF 60 one-way). But keep in mind that the public transportation is clean, reliable, safe, fast, frequent, comfortable ...
Basel/Mulhouse Euroairport is an alternative for travellers on a low budget, approximately 80 km north-west of Zurich. It is served by European low-cost airlines such as EasyJet and Ryanair.
In order to reach Zurich from Basel's airport, exit to Switzerland/Basel at the airport (even though the airport is officially located in France, you will not enter France by using this exit Welcome to Switzerland ), and take bus line 50 to Basel main train station (Basel SBB). From there, regular intercity trains connect Basel to Zurich. The fare from the airport to Zurich main station is around CHF 40 per way, overall travel time is approx. 90 minutes. Check schedules and buy/print tickets in advance on the web-page of the Swiss Federal Railways (SBB) (Note that tickets are only bound to a particular day, but not to a train. No seat reservation is necessary.) Alternatively, tickets can be bought at the SBB counter in the Swiss sector of the airport, or at the bus/train station.
By Train
Zurich main station (Zurich HB) is served by several international train lines. Schedules to Zurich can be found on the website of the Swiss Federal Railways (SBB). In particular, regular high speed trains connect France (TGV Lyria), Germany (ICE), and Italy (Cisalpino) to Zurich. Also, some night trains connect European cities to Zurich. More information on how to reach Zurich by train can be found here.
The main train station is located in the heart of Zurich. It is a 15min walk or a short tram ride away from the conference venue Volkshaus Zurich.