The cheapest way to the airport. Nothing listed is quicker.
CFF train to Cornavin
Train · CFF/SBB, on a Unireso ticketPickup, hours & luggage
Boards at. Genève-Cornavin, the main station, any platform
The Unireso zone 10 ticket, CHF 3.00 for 60 minutes, valid on this train and every tpg bus and tram in the canton. Reduced fare CHF 2.00. CHF 0 with a Geneva Transport Card obtained before arrival.
Luggage. Mainline Swiss trains; racks and space by the doors.
Hours. Every few minutes through the day, six minutes to the airport.