Knowing Gibraltar as I do, I can tell you that any such thought is a pipe dream. The Gibraltarians themselves have no interest in such an operation and never will have.It is not financially viable and routes, other than to and from the UK have all failed. Indeed some of the UK routes have done that.The runway is restricted with sea at both ends (Captains only landing)and often wind and fog restricted. The only Boeing that can make it, without upgrade, is the classic (on the wrong end of its lifespan) and the A320.
The Spanish Government are busy at this time trying to exclude Gibraltar from the EU air routes agreements
Were that to happen their only reliable diversion fields would be North Africa
So in reply to the OP, no this isnt a starter, in fact not even a dream as far as Gibraltar is concerned.They are nothing if not realistic
