I'm a regular traveller between Exeter and Newcastle. In my experience this route suffers a lot of delays, reasons given include faulty parts on aircraft/ weather/ staff sickness. Additionally Flybe will reroute planes to ensure flights to other destinations aren't delayed at the expense of this route. Where there are delays Flybe just don't seem to give a damn if people are left stranded for any onward travel from their destination.
In my opinion this airline needs to give serious consideration to their business continuity plans to reduce delays for some quite minor reasons, and when thing go wrong they need to seriously address their customer service and offer support to passenger who may be left stranded.
This route should be a quick and cost effective alternative to driving/train travel, and when flybe get it right it does achieves that.
Unfortunately for me there are too many delays on this route, and the lack of any support for stranded customers means I will using alternate forms of travel in future.