Looking at the LHR route there was a 5k drop in pax numbers in November compared to last year, so who is losing BA or EI
Aer Lingus has 5400 less seats on Belfast-Heatrow market in November compared to November 2011. A320 to A319 which is 180 seats per day less. The drop also shows that BA havn't increased passenger numbers a lot as they added many flights possibly more that the Aer Lingus seat reduction but the route still dropped 5000.