Live in Ferney-Voltaire, work in Geneva: one plan for both

• Department: Ain.
• Place of work: Geneva.
• Route page: The Pays de Gex crossing (in French).
• Area: cross-border commuters in Geneva.

Ferney-Voltaire, and where you cross the border

Ferney-Voltaire borders Geneva Airport: the border runs along the runway, and the French sector of the terminal can be reached from the town by the customs road. You cross into Geneva at the main customs post, towards Le Grand-Saconnex, and work on the Nations tram is moving ahead on the other side; it is due to open in December 2028. In the 2022 census, according to INSEE, 3,826 of the 5,711 working residents of Ferney-Voltaire work in Switzerland, that is 67.0%, first of all in the commune of Geneva (2,624 people).

The airport, and its antennas that cover the town

An airport concentrates a lot of antennas, and their signal does not stop at the fence: in Ferney, your phone picks up the Swiss network in town and inside flats. It can switch to the Swiss network at home, well before the main customs post.

With Flytel, a phone that picks up a Swiss network stays within its plan: calls and texts are included, and mobile data is taken from the Switzerland and Europe allowance, 20 GB or 50 GB depending on the plan.

Four customs posts, a tram, and CERN next door

The Pays de Gex has four customs posts towards Geneva. Ferney’s, the main customs post, towards Le Grand-Saconnex; Prévessin-Moëns’s, towards Meyrin, where CERN has its address on the French side, the laboratory spreading over Meyrin on the Swiss side and over Prévessin-Moëns and Saint-Genis-Pouilly on the French side; and two small customs posts to the north, Sauverny and Versonnex, towards Collex-Bossy. Geneva Public Transport (TPG) tram 18 ends its route at the “Meyrin, CERN” stop, right against the border; the Nations tram, for its part, is under construction on the Swiss side, due to open in December 2028. From Gex, the sub-prefecture, the road runs down to Ferney and then to the main customs post, and since July 2025 cross-border buses have run from Gex to Cornavin. When the screen at home shows a Swiss network, it is the plan that decides the bill: with Switzerland included, it does not change.

Your phone switches to the Swiss network in Ferney-Voltaire without you moving? Why, and how to get back to the French network: the guide to the network at the border.

Until the tram arrives, the border is crossed by bus or by car

Until the tram arrives, due in December 2028, you cross the main customs post by bus or by car, at rush hour. Meanwhile, you are on your phone, often already on the Swiss network. A plan designed for travel treats Switzerland as an exception. Here, it is included: calls both ways, and mobile data in France as in Switzerland.

The journey is described on the crossing page (in French), and the area on the page cross-border commuters in Geneva. What a cross-border mobile plan should cover has its own page. To choose, compare the plans.

In the same area: Saint-Julien-en-Genevois, Gex and Valserhône. These pages are in French. All the communes (in French), by area.