San Sebastián has 3 airports (2 international) within just over 100 km of the city.
Only 20 kilometers from the city centre, San Sebastián Airport has connections to the major Spanish cities; Madrid and Barcelona.
Bilbao Airport, with connections to all Europe, is 105km from the city, and has public transport from the airport to San Sebastian centre. Biarritz Airport, served by French and international low-cost companies is 47km from the city.
The train station in the centre of San Sebastián, the Estación del Norte, offers connections to numerous Spanish cities including Madrid and Barcelona, and to international destinations such as Paris and Lisbon.
Please see this website for further travel information: https://congress.sansebastianturismoa.eus/en/mice-city/practical-information/location-how-to-arrive