I thought I share this with you; just booked a ticket from London Stanstead to Valladolid for £10 incl tax with Ryanair. From Valladolid you can get to Leon, Astorga or Burgos really easy (direct bus from the airport), or in my case to Fromista (by train). I think it's one of the lesser known options, but definitely a huge bargain!
And it's ridiculous, but the train ticket from South-London to Stanstead is more expensive than the flight to Spain...
And it's ridiculous, but the train ticket from South-London to Stanstead is more expensive than the flight to Spain...