There are many possibilities!
Biarritz is the closest airport to Seignosse. E.g. you can fly there with Ryanair from London or from Rotterdam with Trans Avia.
With Air Berlin you can go to Bilbao from Cologne, Berlin or Munich. Or you can fly from Paris (TUIfly, Easyjet and Air Berlin). In Paris Gare-Montparnasse there is a TGV every two hours that goes to Bayonne. From there you can take the regional bus line, RDTL, to Seignosse Le Penon and get off at the stop “Office de Tourisme.”
Most German airports offer flights to Bordeaux and Biarritz with Air France, KLM and Lufthansa.
KLM flies from Amsterdam to Bordeaux.
In Biarritz, you can take a bus to Bayonne, that stops at the central SNCF train station. There, you take the RDTL bus to Seignosse Le Penon, stop “Office de Tourisme”.
If you’re landing in Bordeaux Airport, you can take the Bus to Bordeaux’s central train station Saint Jean and from there take a train to St. Vincent de Tyrosse, where we can pick you up for a fee of 10,00 Euro.