What Jet2 have done is genius! They have obviously looked at who is booking what, and where they live. There must be heavy demand from Lancashire and Cumbria for flights to Palma, Belfast and Murcia, so they have met demand from the people of those regions and provided the necessary services.
Watch out for a Prague or Budapest service from BLK! There are hundreds of Eastern Europeans working in the resort who need a cheap flight to visi family.