I just looked at Travelocity...I've found them to be as cheap, regularly as any of the discount carriers. I put in July 10 & 20 for the flights & came up with convenient flights on British Air. Total fare from London to Barcelona & back from Athens was $223 & I consider that quite cheap! I cruised through the Greek Isles & ended at Istanbul a few years ago. Wonderful! Good luck.

Carol Oregon