The nearest airport to Vallée de Joux is the International Airport of Geneva-Cointrin.
From the International Airport of Geneva you easily get to Vallée de Joux. Whatever country you arrive from, the railway station right at the airport takes you further. You will need around 90 minutes to reach Vallée de Joux by train and 60 minutes by car.
The International Airport of Zürich-Kloten is also well served by public transport. You will reach Vallée de Joux by train in 3 hours and 10 minutes and by car in 2 hours and 30 minutes.
Every airport in Switzerland has got a car rental or taxi service.