SWB, The A1(M) ends at White Mare Pool and the Western Bypass is essentially a motorway up to Swalwell, strictly speaking it isn't in Newcastle but as near as dammit. Other comparable airports (LBA, LPL, GLA, BRS, BFS)would love to have our metro access. Really can't see how Newcastle Airport is being held back by its ground transport links, I'm afraid.
Anyway, who knows where we'll be in 33 years' time? Personal Jetpacks I reckon