Although it might be more expensive, seriously consider flying an "Open Jaw" route. My experience results in more direct travel, taking fewer hours enroute, with fewer connections. There should be a minimal additional cost in flying into one European city and returning from another European city, as opposed to a standard round trip.
This example assumes you are coming from outside Europe. Fly into Paris Charles de Gaulle Airport (CDG). Take the "Les Cars Air France" bus from T-2 just beyond luggage claim to Gare Montparnasse. I think it is Line #4. See this link for specific information on the bus transfers from CDG to Gare Montparnasse:
http://www.aeroportsdeparis.fr/ADP/...lic-transport/paris-cdg-car-air-france.htm#a3
From there, ride the SNCF/TGV to Bayonne and change to the little local train to St. Jean Pied de Porte. You can book the rail portion through http//
www.raileurope.com
For reference, the SNCF web site is:
http://www.sncf.com/en/passengers
The regional train web site for the TER Line 62 from Bayonne to St. Jean Pied de Port (French only) is:
http://www.ter-sncf.com/Regions/aqu...Avant_mon_voyage/Fiches_horaires/Default.aspx
When you arrive at your Camino end point in Spain, take a bus (they are VERY nice) or a train, or both, to Madrid-Barajas Airport (MAD). Fly direct back to your starting point from Madrid. This may entail staying a night at a hotel near the airport before catching your flight home. There are a lot of low priced hotels and hostals with free shuttle service to the airport. The Madrid Metro system is VERY easy to use. Their web site is:
http://www.metromadrid.es/en/
You book the flights to CDG and from MAD through your airline or travel agent. The bus or Spanish train portions can be booked as suggested above. NOTE: In my experience, rail schedules and ticketing are rarely available less than 60 days before.
One final thing to consider is to alter your end point so you can catch a direct bus, or a train to Madrid. The other BIG Spanish bus company is ALSA. Their web site is:
http://www.alsa.es/en I rode their buses several times earlier this year. They are clean, inexpensive, comfortable and some services even have attendants.
I hope this helps.