Looking at late October when we plan to come, Aegean Heathrow to Chania and back (via Athens of course) is about two-thirds the price of Easjet from Gatwick to Iraklion and back. Amazing! Like Rowena and Carl, Heathrow is better placed for us than either Gatwick or Stanstead, and as for the choice between Chania and Iraklion... for me it's no contest, Chania wins on every count!! Admittedly we shall be based in the Apokoronas, but I think the distance to Plakias is about the same from Chania or Iraklion.
I'm also hoping Aegean won't have a 10-15 minute walk to the Heathrow boarding gate as EJ do at Gatwick, and I shall enjoy the luxury of choosing my seats at check-in, rather than having to elbow my way through the crowds of non-Speedy Boarders. There's just a chance the journey might become quite enjoyable again!
Αll in all, this seems pretty good news to me!