I don't think this has been highlighted on here previously (apologies if it has), but I've noticed that for S09, BE are offering IOM-JER (via LTN) three or four days a week. No aircraft change, but obviously a short stay on the ground at LTN.
There is also a direct Flybe. Saturday flight between the IOM and Jersey from May until September. It has not been publicised, and may yet be subject to change, but it is avaliable on their website. The aircraft will fly to Luton in-between.
BE159 Depart IOM 08:30 - Arrive JER 10:00
BE166 Depart JER 13:45 - Arrive IOM 15:15