Years and years ago, I really liked flybe, and then somehow, they decided to turn into Ryanair.
Try booking a flight with them now, and you get all the usual garbage, about luggage charges, pre selecting seats, and how it gives passengers a choice...blah de blah de blah.
Sad thing is, a few years ago they were pretty good...but now not so good.
AND, they are NOT cheap. Take a look at the full cost (including charges) for the flight from say, Glasgow to Belfst city (a monopoly route), and you'll be shocked at the cost for a twenty minute flight.