Here's some information from the half year results presentation.
http://i104.photobucket.com/albums/m...eiresults3.jpg
In June 09 Aer Lingus had a 21% market share on the Gatwick-Malaga route and 16% of the Gatwick-Faro route. The average load factor in June was 68% and they have a 24% market share overall at Gatwick.
Aer Lingus seem pleased with what they're seeing at Gatwick and Belfast, it's unlikely that either are making money as Gatwick is still very new and will be maturing for some time to come while Belfast has had a turbulent start and has only now started to look in shape but the lower cost bases they have at both these bases and the fact that things will start to improve in the UK long before they do in Ireland will mean that both bases are positioned for growth.
Enda Cornielle went as far to say:
‘‘There are options on where we will put our aircraft - such as moving some to Belfast and Gatwick as these bases are performing well and the UK is expected to come out of recession quicker than Ireland. We have already done this with two planes."
Aer Lingus prepares tough survival plan | The Post
Now take this all with a pinch of salt as Aer Lingus might be exaggerating how well they are doing in order to back up their threat to unions about moving aircraft out of the Republic and into the UK bases.