Ceillac is very popular because of the number of ice falls often in conditions and not far from the car park. If you base yourself in Briancon (or nearby it) you will have plenty of other venues at hand too (La Grave, Freissinieres, etc.). Ceillac itself it's not a big town. Flights to Turin are usually cheap (Ryanair, BA, EasyJet, Thomas Cook, etc.). You'll be about 1.5 hrs from the border with France (if you make it alive through Italy, that is).