Ryanair are basing 20 additional aircraft at Stansted during the Olympics, I placed a post ages ago about this! Certainly nothing to do with MOL and today's press announcement, more about the bloke who was having to roster the crew for them.
http://www.pprune.org/6911219-post3749.html
1,500,000 pax over 6 months is close to 8,000 additional flights assuming every flight is full (189 pax).