I think BFS - PSA will do real well. It will pull traffic from North Dublin and the commuter belt up the East coast of Ireland who love to use Belfast rather than that kip in Dublin.
JET2 and Easy both are likely to fall into Icelandic hands over the next 12 months. The real money behind Jet2 is Russian money routed through Iceland. Check it out in depth. Ask how many trips some of the Jet2 people make to Iceland.
Icelandic interests backed by Russian cash are buying UK cash businesses and banks. Retail, banks and airlines. All great cash businesses.