Now that EI are going that leaves LHR, ACE and TFS up for grabs as good all year performers, also LPA, but has not done as well as the rest, I am sure an orange expansion isn't too far away from being announced. I am not sure how long 10 flights a day to LHR will last from BHD, perhaps BA will consider BFS
From BBC
BBC News - Aer Lingus confirms George Best Belfast City Airport switch
Spokesman John Doran said: "We have asked Aer Lingus why it has performed this U-turn, but so far we haven't heard any explanation that makes sense - save that they have been offered an implausibly low deal on charges by the airport to move there, and that they aspire to charging higher fares and commanding stronger yields as a result of flying from the City Airport."
Mr Doran said the move was "bad news" for local travellers, who he said until now had enjoyed some competitive Aer Lingus fares from Belfast International.
"We're sorry the airline has taken this decision which will have no positive effect on in-bound tourism or the development of a robust local aviation sector that's capable of competing with Dublin which, as well as being Aer Lingus's home base, is our main competitive challenge on the island," he added.
"We are already working to fill the void left by this defection and are confident that in coming months we will have positive news on new GB and international services."
edit - after reading the full statement from BFS and their tweets, it seems like quite a bitter move, defiantly not wishing EI any luck, EI may hope that they don't need to divert to BFS.. looks like BFS will charge them the highest rate
just to add to this, as much as I love flying from BFS, I am a little disappointed at the remarks made on a certain tweeting website