Aer Lingus regional routes would appear to be doing rather well! Taking Dublin Glasgow route (and comparing to Prestwick), it would seem that the trend is toward Glasgow International and it has been traditionally Ryanair that carry the numbers on Prestwick Dublin!! Well done Aer Lingus Regional.
The othe markets where FR & EI Regional compete all seem to be growing hopefully the new entrants are getting their fair good share of the traffic (not new new but since last year).
Looking at the comparison on PIK & GLA from Dublin and indeed the general performance of FR to STN from PIK V EZY to STN from PIK, this may give some clues as to why FR may find GLA an attractive route.
(I do realise PIK STN frequency is now low but still figures been in decline)
The improvement in figures of Aer Lingus R on GLA may alone give FR some sense of urgency to look at GLA. MOL hasnt passed up many opportunities to challenge Aer Arann or indeed Aer Lingus for that matter.
EI-BUD