If you are driving to Tignes, at all costs try to avoid arrival at or departure from Tignes on a Saturday, unless you do so in the early hours. Leaving the resort in particular even in normal weather can take three hours just to Bourg St Maurice - a journey of 25 kms.
A good way to travel to Tignes from the ferry ports is via Dijon, A40-Bourg en Bresse-Geneva. Then A41-Annecy-Chambery. The alternative route via Lyon has been much improved recently, with a ring road linking to the wonderful Burgundy region. Once in Tignes, you will have to park in the garages, which for convenience should be booked in advance.
Phone Tignes Information Parkings on +33 47940 0670
or email firstname.lastname@example.org
or link to https://en.tignes.net/holidays/car-parks.
Beware of over-reliance on GPS for directions to Tignes. We have heard from clients who have found themselves being directed to Tignes via the Petit St Bernard, or even the Col d'Iseran, both completely impassable in the winter. "We thought it was very odd", they said, "When the snow drifts got deeper and deeper". There is no substitute for a paper map and don't take the shortest-seeming route using local roads.