Last year was the 1st time in 19 yrs we could not make it out to pp due to no direct flights .Must admit i could see it coming, always used to fly Globespan from Glasgow, but when they came away with some guff about technical problems and transferred us to Edinburgh to fill another half empty flight the alarm bells started to ring(with me). The following year Ryanair flew from Glasgow Prestwick and the flights i was on were lucky if they were a 3rd occupied!
Unless the hotels open and tour companies start selling packages again, which would fill the planes, then i can't see change anytime soon.
I know there are other routes but a lot of people (me included) do not relish connecting flights/driving long distances in mid-winter, for what is usually a weeks break, not worth it.