Flying Information
The main airports used to get to Val d'Isere are Geneva & Lyon. However Chambery and Grenoble are also used. As a rough guide: A lot of carriers fly to Geneva and hence you can often get the best prices if you hunt around. It also has the most frequent bus service to and from Val d'Isere. Lyon has quite a few carriers and a reasonably frequent bus service and hence is also a good option. Ryanair flies to Grenoble, you can get some good prices however you will need to get a hire car or a private transfer. Chambery is the closest airport however you may find it difficult to get a good price try Snowjet. Click on the Airline logos to view their web site ( these are mostly created for desktops not mobiles).
You can also try www.skyscanner.net a great way to compare low cost carriers.