By airplane:
Orduña can be reached from 3 nearby airports. The most important and nearest one is Bilbao (BIO) (53km). The other choices are Santander (SDR) (133km) and Biarritz (BIQ) (172km, France).
The mentioned airports operate with the following low-cost airlines:
From Bilbao 17 destinations in Germany, 3 in Austria and 2 in Switzerland. All flights go via Palma de Mallorca airport. Further destinations: Amsterdam, Copenhagen and Seville
Destinations from Bilbao: London, Paris, Barcelona and Malaga
Destinations from Bilbao: London. From Biarritz: Paris, Lyon, London and Bristol
Destinations from Bilbao: Malaga, Seville and Ibiza
Direct flights from Bilbao to Cologne/Bonn
Santander can be reached from London, Frankfurt, Madrid, Milan, Dublin and Barcelona (Reus).
You can get to Biarritz from Frankfurt, London, Birmingham, Dublin and Shannon.
Destination from Biarritz: Geneva.
All mentioned airports have scheduled flights with air companies like Iberia, Spanair, Air Europa, Air France, Lufthansa, Alitalia, SAS, TAP Portugal, Brussels Airlines, etc.