Just come off the phone with Jet2 "winners line".
I can get a free return flight between 1st November 2017 and 31st March 2018 (excluding New York) as long as seats are available.
Alternatively, I can get £200 off a package holiday FOR TWO or £100 off if travelling alone, during their summer schedule 2017. This is the option that the operator seemed keen to encourage (more money for them, of course).
Leeds/Bradford is their main hub and most destinations are served from there.
I'd prefer a quick hop from Exeter to Manchester and get a European flight from there.
Decision has to be made by 16th December 2016.
I think that's about it for now....checking timetables etc.