There are flybe flights from Birmingham to Biarritz, otherwise you have to travel to London first.
2225 London to Saint Jean Pied de Port via Biarritz Airport
2226 This section discusses travel from London to Saint Jean Pied de Port via Biarritz Airport
Index 2225
2227 Airline Service London to Biarritz Airport
2228 Biarritz Airport to Gare de Bayonne
2229 Gare de Bayonne to Saint Jean Pied de Port
2230 Saint Jean Pied de Port
2227
Airline Service London to Biarritz Airport
The closest airport to Saint Jean Pied de Port is Biarritz/Anglet/Bayonne Airport (BIQ). Biarritz Airport is relatively small and it is easy to get oriented.
Biarritz Airport website indicates airlines and destinations including flights from London.
Biarritz Airport BIQ
http://en.biarritz.aeroport.fr/
At time of writing:
Ryan Air provides service from London Stansted (STN) to Biarritz (BIQ) all year.
Easy Jet provides service from London Gatwick (LGW) to Biarritz (BIQ) on seasonal basis.
2228
Biarritz Airport to Gare de Bayonne
Chronoplus bus #14 travels from Biarritz Airport to Gare de Bayonne. The bus stop is just outside the airport. The bus ride takes about 40 minutes.
Chronoplus
http://www.chronoplus.eu/
Gare de Bayonne. See the picture so you recognize where to get off the bus.
http://en.wikipedia.org/wiki/Gare_de_Bayonne
2229
Gare de Bayonne to Saint Jean Pied de Port
SNCF TER train #62 travels from Gare de Bayonne to SJPdP. You cannot reserve a seat. You can purchase the ticket at the station. At time of writing tracks to SJPdP are washed out. The train goes to Cambo les Bains where passengers transfer to an SNCF bus to SJPdP. Sometimes the bus is used for the entire trip.
TER Aquitaine
http://www.ter-sncf.com/Regions/Aquitaine/fr/Default.aspx