The different options and itineraries to come to Grenoble or Valence from Paris, Lyon or Geneva.

From Paris

The two airports in Paris are Paris-Charles de Gaulle (CDG), in the north-east of the city, and Paris-Orly, in the south.
> To find out more, visit the Paris Airport website

From Paris airports to "Paris – Gare de Lyon" railway station

To take a TGV (high-speed train) to Grenoble or Valence, you will have to make your way to this station.
To do this, you have three options: bus, RER (train) or taxi.
 
By bus
From Paris CDG Airport, take a Roissybus.
> More information on the Roissybus service from the Paris Airport website

From Orly Airport, take an Orlybus shuttle bus.
> More information on the Orlybus service from the Paris Airport website
 
By RER
From Paris CDG Airport, take RER line B to Châtelet-Les Halles station, and change there to line A.
From Orly Airport, take the Orlyval shuttle, then RER line B to Châtelet-Les Halles station, and change there to line A.
> More information on the Paris Public Transport Agency (RATP) website
 
By taxi
In France, taxi fares are regulated but quite expensive.
Official taxis have an illuminated sign on the roof.
Fares to "Paris – Gare de Lyon" railway station: about €55 from Paris CDG and €35 from Paris-Orly.
 
Good to know
To find out more about travel in Paris, visit the RATP website.
RATP also provides a journey planning app.
> More information about the app

From "Paris - Gare de Lyon" railway station to Grenoble or Valence

The journey times from "Paris - Gare de Lyon" station by TGV (high-speed train) are 3 hours to Grenoble and 2.5 hours to Valence.
It is best to book tickets in advance, to benefit from lower fares.
> More information from the French Railways (SNCF) website, or from the Trainline ticketing platform.

From Lyon

Lyon’s airport is called Lyon-St Exupéry.
> To find out more, visit the Lyon Airport website

From Lyon-St Exupéry to Grenoble or Valence

To get to Grenoble or Valence from Lyon-St Exupéry Airport, you have two options: bus or train.
 
By bus
The Ouibus company runs direct services to Grenoble and Valence.
> More information from the Ouibus website
 
By train
You can travel by train to Grenoble or Valence from any of these 3 stations:
  • Lyon-St Exupéry (at the airport),
  • Lyon-Part-Dieu (Lyon city center),
  • Lyon-Perrache (Lyon city center).
> More information from the SNCF website and the Trainline ticketing platform

From Geneva

From Geneva Airport, there is a direct shuttle bus service to Grenoble, and you can take a train to Valence or Grenoble via central Geneva.
> More information from the Geneva Airport website, and the Ouibus website regarding bus connections between Geneva and Grenoble
 
Good to know
Flights are also operated from various other European cities to two other local airports - Grenoble Alpes Isère and Chambéry Savoie Mont Blanc - but only at certain times of the year.
> Find out more on the websites of Grenoble Alpes Isère Airport and Chambéry Savoie Mont Blanc