Which route would you suggest?
Dublin to Galway to Dingle or Dublin (stop at Cashel) to Dingle then Galway. Flying to London after and I'm thinking if I end in Ingle I'll fly out of Kerry but if I end in Galway I'll fly out of Shannon.
I'd start in Dingle, go up to Galway, then on to Dublin where you are only a short flight to London.