Certainly KEF is flown from LUT with EZY. Used it myself a few weeks back - very good loads. Now if EZY were ever to introduce a KEF service from EDI I think that would be very interesting bearing in mind that Icelandair operate a 757 service to GLA - what is it these days twice or three times a week?
I know that the Iceair flights tend to go on to or come from States/Canada however I cetainly did notice that a lotof the EZY pax from LUT were Icelandic.
Nivsy