Happy Wanderer mentioned -
I was skiing in Alpe d'Huez a couple of years back and visited the altiport in the resort.
Tignes has an interesting looking Altiport. Sometimes referred to as Altiport du Palet it seems since it it located near the Col du Palet.
I have seen light aircraft landing on the glacier elsewhere in the resort at least once.
https://goo.gl/maps/JwmGjN3qz1s
This google satellite image has an aircraft that appears to be taking off from it in the summer. The runway is very short and very steep. You could use google earth to get a profile.
Tignes takeoff -
Courchevel of course is likely to be more developed regarding resources but all that tarmac looks quite boring in comparison
There is a GA airport at Aosta in Italy that is very close to the mountains. Quite a lot of gliders based there.
https://en.wikipedia.org/wiki/Aosta_Valley_Airport
Corso di volo in Alta Montagna - AeroClub Valle d'Aosta
No mention of English, all the locals are bilingual Italian/French.