iLOVE Paris! I remember reading that it is just as fast (maybe faster?) to fly to Paris and take a train, then a bus to Saint-Jean-Pied-de-Port, France (a popular starting point of the Camino). Barcelona looks closer on a map but may take longer to get to the starting point!
Originally, pilgrims started from their doorsteps throughout Europe (and some still do!) and walked across several countries to get to Santiago and/or Finisterre!