Agree with above comments about Madrid, If easy think ATH can work then MAD definitely can, not so sure about Lisbon though.
Shame BFS cannot attract some major European/ North American airlines. All seem to do well from DUB AA/AC/CO.UA/DL/LH/MALEV/SAS/US all seem to be doing well at least in the summer, also Ethiad 2xdaily some days out of Dublin, is BFS missing out on even a small portion of this traffic due to APD? UK govt needs to realise Northern Ireland is different and in the grand scale of things within in the UK is close to being and isolated community with a very clever neighbor next door just 100 miles down the road.