What is the cheapest way to get to Annecy, France?
In France there’s no real “intercity” bus service so, really your only option is with the train (there are also low cost airlines), You can see schedules from Paris to Annecy here : http://bonjourlafrance.net/france-trains/tgv-french-alps/schedules/paris-chambery-annecy.htm and use the links to find any other itineraries you might want to Annecy. If and when you buy tickets, you can get reduced rates as a youth (under 25) and also if you reserve well ahead of time. (Tickets are available for purchase 60-90 days before departure). Special rate tickets do have conditions… including not being reimbursed if not used… so, be careful. Bon voyage.