You never can be wrong with Iberia Ailines low fares

Departure city: London
Destinations: Alicante, Asturias, Barcelona, Bilbao, Fuerteventura, Gran Canaria, Granada, Ibiza, Lanzarote, Madrid, Malaga, Menorca, Palma de Mallorca, Pamplona rtn from, San Sebastian, Santander, Santiago de Compostela, Seville, Tenerife
Prices start from 91 GBP, rtn