Thanks for your interest. I've purchased an open-date one-way ticket to London, UK, on Virgin Atlantic. These are available at Airline Tickets, Cheap Hotels, Vacation Packages & Travel Deals
for $80 + taxes and fees (average cost around $235). From London (Stansted) I recommend a cheap flight on Ryanair to Barcelona (Girona or Reus). I myself will be visiting relatives in France and plan to take the Lunea night train from La Rochelle south to Perpignan, then on by SNCF to Barcelona. Please let me know if you have any further questions. Thanks.