I am somewhat disgruntled, having booked a Flexi Fare at a considerable premium over the standard fare to discover that I could not change the route, but only the date. I thought it was possibly me doing something stupid, as I couldn't change the 'From' and 'To' boxes.
Looking for the Ts and Cs I found this :
easyJet Flexi Bookings do not allow route changes (i.e. You are not entitled to change the departure or destination airports of Your original Booking).
Fair enough, I should have done my homework before but I had assumed - foolishly - that it would allow a route change, all I was trying to change was the departure airport.