The Haute Savoie has a bonus for skiers over other French départements in that it’s close to the Swiss border and has short and easy transfers from Geneva International Airport (around an hour) – great when you have youngsters who just want to be there and who, once they’ve seen a mountain and a touch of snow, have had enough of the beautiful scenery passing by.
The area is also within reasonable distance of Lyon and its international airport, Chambéry airport in Savoie and Grenoble airport in Isère. Within the département itself, Annecy airport has connections to Paris. There are shuttles to the resorts from the major airports.
For getting to the French Alps by train, see the excellent Man in Seat 61 (seat61.com/France.htm).