Yep they tried Glasgow-New York flights via Knock in the West of Ireland which lasted very briefly. I always found this interesting. Knock Airport is in the middle of nowhere built on top of a bog, the airport was famously built during the 80s by a local bishop - Monsignor Horan - in order to get visitors into the local shrine and to make it easy for people from that part of the country to emigrate to America, as was the stark reality for many people living in the region back then.
His dream was to get direct flights to the USA, so I guess his dream was finally realised - albeit many years after he died - but how the surrounding area was ever going to support justifiable loadings is beyond me.
Said airport operates successfully with flights to the UK and Dublin.