Aer Lingus now seem to be releasing a pair of seats on 3 or 4 lunchtime flights on the DUB-LHR route from 35 days out to 59 days out
Pretty much nothing available < 35 days out
Most flights available > 60 days out with 6 seats available
for DUB-LHR fees/taxes are £11.90 if booked through EI website or a whopping £94.40 if booked through BA website!
LHR-DUB reward flights