Let's see -
which coastal passenger airports have been a roaring success in recent years?
Manston
Plymouth
Blackpool
and which ones are on life support?
Durham Tees Valley
Prestwick
Newquay
Cardiff
The one conspicuous success is Southend, with an EZY base, 50 miles from London and in an affluent catchment area.
EZY to Carlisle? I think not.